2023A LDT Schedule

(Most column headers include added "mouse over" information.)
January 2023 - LDT
DoW Date Moon days Dark Code Max moon Illum Time Range (MST) No moon/ night hrs Frac night Prog ID Principal Remote Instrument Requested Filters/Gratings TO Intended LMI Filter Setup Intended DeVeny Grating
Sun Jan-01 9.9 b D 82% 82% 18:24-03:30 03:30-06:32 0.0 / 9.1 2.3 / 3.0 0.75 0.25 E01 Y01 Engineering Brewer Remote LMI EXPRES r BS KT EM IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Mon Jan-02 10.9 b b g 87% 88% 89% 18:25-21:27 21:27-00:29 00:29-06:32 0.0 / 3.0 0.0 / 3.0 1.3 / 6.0 0.25 0.25 0.5 L09 L02 L16 Hanley van Belle Kareta Remote Remote Remote EXPRES,NIHTS EXPRES DEVENY,LMI,NIHTS u,g,r,i,z,CN,DV1 JF IN OBS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Tue Jan-03 11.9 b 94% 18:26-06:32 0.3 / 12.1 1.0 L12 Richey-Yowell On-Site DEVENY DV8 (831g/mm,8000A),OG570 IN OBS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV8 (831g/mm,8000A)
Wed Jan-04 12.9 b b 98% 98% 18:26-03:31 03:31-06:33 0.0 / 9.1 0.0 / 3.0 0.75 0.25 E01 Y01 Engineering Brewer Remote LMI EXPRES r EM JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Thu Jan-05 13.9 b b 100% 100% 18:27-03:31 03:31-06:33 0.0 / 9.1 0.0 / 3.0 0.75 0.25 E01 Y01 Engineering Brewer Remote LMI EXPRES r JF EM JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Fri Jan-06 14.7 b b 100% 100% 18:28-03:32 03:32-06:33 0.0 / 9.1 0.0 / 3.0 0.75 0.25 E01 Y01 Engineering Brewer Remote LMI EXPRES r EM BS JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sat Jan-07 13.7 b b b 99% 98% 98% 18:29-21:30 21:30-00:31 00:31-06:33 0.0 / 3.0 0.0 / 3.0 0.0 / 6.0 0.25 0.25 0.5 L09 L14 L16 Hanley Llama Kareta Remote Remote Remote EXPRES,NIHTS EXPRES DEVENY,LMI,NIHTS u,g,r,i,z,CN,DV1 BS KT OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Sun Jan-08 12.7 b b 96% 94% 18:29-03:32 03:32-06:33 0.2 / 9.1 0.0 / 3.0 0.75 0.25 E01 Y01 Engineering Brewer Remote LMI EXPRES r BS JJ IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Mon Jan-09 11.7 b b 91% 89% 18:30-03:32 03:32-06:33 1.2 / 9.0 0.0 / 3.0 0.75 0.25 L13 L14 Llama Llama Remote Remote EXPRES EXPRES IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Tue Jan-10 10.7 g b 84% 83% 18:31-03:33 03:33-06:33 2.1 / 9.0 0.0 / 3.0 0.75 0.25 L13 L14 Llama Llama Remote Remote EXPRES EXPRES CS KT OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Wed Jan-11 9.7 g b 76% 76% 18:32-00:32 00:32-06:33 3.1 / 6.0 0.0 / 6.0 0.5 0.5 N07 E01 Emery Engineering Remote LMI LMI g,r,i,z,VR r EM JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Thu Jan-12 8.7 D g g 0% 67% 66% 18:33-21:33 21:33-03:33 03:33-06:33 2.5 / 3.0 1.5 / 6.0 0.0 / 3.0 0.25 0.5 0.25 L16 E03 Y01 Kareta Ellsworth-Bowers Brewer Remote Remote Remote DEVENY,LMI,NIHTS DEVENY EXPRES u,g,r,i,z,CN,DV1 DV1 (150g/mm,5000A) JF EM JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Fri Jan-13 7.7 D g 57% 57% 18:33-00:33 00:33-06:33 5.0 / 6.0 0.0 / 6.0 0.5 0.5 E03 E01 Ellsworth-Bowers Engineering Remote DEVENY LMI DV1 (150g/mm,5000A) r EM JJ IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Sat Jan-14 6.7 D g 0% 47% 18:34-00:33 00:33-06:33 5.5 / 6.0 0.5 / 6.0 0.5 0.5 N08 E01 Humes Engineering Remote DEVENY,NIHTS LMI DV1 r IN JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Sun Jan-15 5.7 D D g 0% 0% 36% 18:35-21:34 21:34-00:34 00:34-06:32 2.5 / 3.0 3.0 / 3.0 1.6 / 6.0 0.25 0.25 0.5 L09 L07 E01 Hanley Devogele Engineering Remote Remote EXPRES,NIHTS LMI LMI VR,OPEN r CS JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Mon Jan-16 4.7 D D D 0% 0% 25% 18:36-21:35 21:35-00:34 00:34-06:32 2.5 / 3.0 3.0 / 3.0 2.7 / 6.0 0.25 0.25 0.5 L09 L02 E01 Hanley van Belle Engineering Remote Remote EXPRES,NIHTS EXPRES LMI r IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Tue Jan-17 3.7 D D 0% 16% 18:37-00:34 00:34-06:32 5.5 / 6.0 3.9 / 6.0 0.5 0.5 M07 E01 Ye Engineering Remote LMI,NIHTS LMI g,r,i,z,VR,OH,CN,BC,RC,C2,C3,UC r CS IN JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Wed Jan-18 2.7 D 8% 18:38-06:32 10.6 / 11.9 1.0 N05 Tegler Remote LMI B,V,R EM JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Thu Jan-19 1.7 D 0% 18:39-06:31 10.9 / 11.9 1.0 N05 Tegler Remote LMI B,V,R JF EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Fri Jan-20 0.7 D D D 0% 0% 0% 18:40-21:38 21:38-03:33 03:33-06:31 2.5 / 3.0 5.9 / 5.9 2.5 / 3.0 0.25 0.5 0.25 L16 L15 Y01 Kareta Levine Brewer Remote Remote Remote DEVENY,LMI,NIHTS GWAVES,POETS,LMI EXPRES u,g,r,i,z,CN,DV1 VR,RC,r EM BS JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Sat Jan-21 0.3 D D 0% 0% 18:41-03:33 03:33-06:31 8.4 / 8.9 2.5 / 3.0 0.75 0.25 L23 Y01 Kunovac Brewer Remote Remote EXPRES EXPRES BS KT OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sun Jan-22 1.3 D 2% 18:41-06:30 10.8 / 11.8 1.0 L18 Wasserman Remote LMI VR CS JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Mon Jan-23 2.3 D D D 7% 0% 0% 18:42-21:39 21:39-00:36 00:36-06:30 1.6 / 3.0 3.0 / 3.0 5.4 / 5.9 0.25 0.25 0.5 N02 Y01 M07 Trujillo Brewer Ye Remote Remote Remote LMI EXPRES LMI,NIHTS VR,V,I,g,r g,r,i,z,VR,OH,CN,BC,RC,C2,C3,UC, CS JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Tue Jan-24 3.3 D 15% 18:43-06:30 8.7 / 11.8 1.0 L24 Moskovitz Remote LMI VR CS IN JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Wed Jan-25 4.3 D D D 24% 25% 0% 18:44-21:40 21:40-00:36 00:36-06:29 0.0 / 2.9 2.2 / 2.9 5.4 / 5.9 0.25 0.25 0.5 N02 Y01 M04 Trujillo Brewer Holt Remote Remote On-Site LMI EXPRES LMI VR,V,I,g,r g,r,OH,CN,BC,RC,C2,C3,NH,UC,CO+ JJ EM IN OPEN DARK OH C3 BC I R V B UC OPEN u g r NH CO+ CN RC VR C2 DV2 (300g/mm,4000A)
Thu Jan-26 5.3 g D D D 34% 35% 0% 0% 18:45-21:41 21:41-03:33 05:00-06:30 03:33-06:29 0.0 / 2.9 4.0 / 5.9 1.0 / 1.5 2.5 / 2.9 0.25 0.5 0.13 0.25 L16 L25 L26 Y01 Kareta Moskovitz Moskovitz Brewer Remote Remote ToO Remote DEVENY,LMI,NIHTS LMI DEVENY,LMI,NIHTS EXPRES u,g,r,i,z,CN,DV1 g,r,i,z u,g,r,i,z,VR,DV1 (150g/mm preferred) or DV2 (300g/mm) EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Fri Jan-27 6.3 g D D 45% 46% 0% 18:46-21:42 21:42-03:32 03:32-06:28 0.0 / 2.9 3.0 / 5.8 2.5 / 2.9 0.25 0.5 0.25 L09 L25 L07 Hanley Moskovitz Devogele Remote Remote Remote EXPRES,NIHTS LMI LMI g,r,i,z VR,OPEN EM BS JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sat Jan-28 7.3 g D 56% 57% 18:47-00:37 00:37-06:28 0.0 / 5.8 4.3 / 5.8 0.5 0.5 L10 N03 Ellsworth-Bowers Trilling Remote On-Site DEVENY,LMI LMI DV6 (600g/mm,4900A),B,V,g,r,i g,r,i,z BS KT OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV6 (600g/mm,4900A)
Sun Jan-29 8.3 g g D 65% 67% 0% 18:48-21:43 21:43-03:32 03:32-06:27 0.0 / 2.9 0.9 / 5.8 2.4 / 2.9 0.25 0.5 0.25 L09 E01 Y01 Hanley Engineering Brewer Remote Remote EXPRES,NIHTS LMI EXPRES r CS IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Mon Jan-30 9.3 b b g 74% 75% 76% 18:49-21:43 21:43-00:37 00:37-06:26 0.0 / 2.9 0.0 / 2.9 2.3 / 5.8 0.25 0.25 0.5 L09 Y01 B01 Hanley Brewer Ye Remote Remote Remote EXPRES,NIHTS EXPRES EXPRES IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Tue Jan-31 10.3 b b g 82% 83% 84% 18:50-21:44 21:44-00:38 00:38-06:26 0.0 / 2.9 0.0 / 2.9 1.3 / 5.8 0.25 0.25 0.5 L09 Y01 B01 Hanley Brewer Ye Remote Remote Remote EXPRES,NIHTS EXPRES EXPRES CS IN JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)

February 2023 - LDT
DoW Date Moon days Dark Code Max moon Illum Time Range (MST) No moon/ night hrs Frac night Prog ID Principal Remote Instrument Requested Filters/Gratings TO Intended LMI Filter Setup Intended DeVeny Grating
Wed Feb-01 11.3 b g 90% 90% 18:50-03:31 03:31-06:25 0.0 / 8.7 0.4 / 2.9 0.75 0.25 E03 L02 Ellsworth-Bowers van Belle Remote Remote DEVENY EXPRES DV1 (150g/mm,5000A) JJ EM IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Thu Feb-02 12.3 b b 95% 95% 18:51-03:31 03:31-06:25 0.0 / 8.7 0.0 / 2.9 0.75 0.25 E01 Y01 Engineering Brewer Remote LMI EXPRES r JF EM JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Fri Feb-03 13.3 b b b 98% 98% 98% 18:52-21:45 21:45-03:31 03:31-06:24 0.0 / 2.9 0.0 / 5.8 0.0 / 2.9 0.25 0.5 0.25 E01 E03 Y01 Engineering Ellsworth-Bowers Brewer Remote Remote LMI,POETS DEVENY EXPRES r DV1 (150g/mm,5000A) BS JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Sat Feb-04 14.3 b b 100% 100% 18:53-03:31 03:31-06:23 0.0 / 8.6 0.0 / 2.9 0.75 0.25 E03 Y01 Ellsworth-Bowers Brewer Remote Remote DEVENY EXPRES DV1 (150g/mm,5000A) BS KT OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Sun Feb-05 14.0 b b 100% 99% 18:54-03:30 03:30-06:22 0.0 / 8.6 0.0 / 2.9 0.75 0.25 E03 L02 Ellsworth-Bowers van Belle Remote Remote DEVENY EXPRES DV1 (150g/mm,5000A) CS JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Mon Feb-06 13.0 b b 98% 97% 18:55-06:22 06:04-06:41 0.0 / 11.4 0.0 / 0.3 1.0 0.05 L11 M03 Richey-Yowell Ye On-Site ToO EXPRES EXPRES IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Tue Feb-07 12.0 b b 95% 94% 18:56-03:30 03:30-06:21 0.6 / 8.6 0.0 / 2.9 0.75 0.25 L23 Y01 Kunovac Brewer Remote Remote EXPRES EXPRES CS IN JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Wed Feb-08 11.0 g b 89% 88% 18:57-00:38 00:38-06:20 1.5 / 5.7 0.0 / 5.7 0.5 0.5 L10 Y01 Ellsworth-Bowers Brewer Remote Remote DEVENY,LMI EXPRES DV6 (600g/mm,4900A),B,V,g,r,i JJ EM IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV6 (600g/mm,4900A)
Thu Feb-09 10.0 D b b 0% 82% 81% 18:58-21:48 21:48-03:29 03:29-06:19 2.4 / 2.8 0.1 / 5.7 0.0 / 2.8 0.25 0.5 0.25 L16 E01 Y01 Kareta Engineering Brewer Remote Remote DEVENY,LMI,NIHTS LMI EXPRES u,g,r,i,z,CN,DV1 r EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Fri Feb-10 9.0 g 73% 18:59-06:18 3.5 / 11.3 1.0 L23 Kunovac Remote EXPRES BS JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sat Feb-11 8.0 g 64% 18:59-06:17 4.5 / 11.3 1.0 L01 Grundy Remote LMI VR,g,r,i,z BS KT OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sun Feb-12 7.0 D 53% 19:00-06:16 5.5 / 11.3 1.0 M06 Hammerstein Remote DEVENY,LMI u,g,r,i,z,DV2 (300g/mm,4000A) CS JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Mon Feb-13 6.0 D D g 0% 42% 41% 19:01-00:38 00:38-03:27 03:27-06:16 5.1 / 5.6 1.5 / 2.8 0.0 / 2.8 0.5 0.25 0.25 L13 L07 L14 Llama Devogele Llama Remote Remote Remote EXPRES LMI EXPRES VR,OPEN IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Tue Feb-14 5.0 D D 0% 30% 19:02-00:38 00:38-06:15 5.1 / 5.6 2.7 / 5.6 0.5 0.5 L13 T01 Llama Donnelly Remote Remote EXPRES DEVENY DV5 (500g/mm) CS IN JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV5 (500g/mm,5500A)
Wed Feb-15 4.0 D D 20% 20% 19:03-06:14 05:40-05:55 8.9 / 11.2 0.0 / 0.2 1.0 0.05 B02 M03 Ould Rouis Ye Remote ToO DEVENY DEVENY,LMI,NIHTS DV2 (300g/mm,4000A) OH,CN,BC,RC,DV2 (300g/mm) JJ EM IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Thu Feb-16 3.0 D 11% 19:04-06:13 10.0 / 11.2 1.0 L24 Moskovitz Remote LMI VR JF EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Fri Feb-17 2.0 D 0% 19:05-06:12 10.2 / 11.1 1.0 L06 West Remote LMI g,r,i BS JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sat Feb-18 1.0 D 0% 19:06-06:11 10.1 / 11.1 1.0 L06 West Remote LMI g,r,i BS KT OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sun Feb-19 0.0 D 0% 19:06-06:09 10.1 / 11.1 1.0 L18 Wasserman Remote LMI VR CS JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Mon Feb-20 1.0 D 0% 19:07-06:08 10.1 / 11.0 1.0 L24 Moskovitz Remote LMI VR IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Tue Feb-21 2.0 D 5% 19:08-06:07 9.6 / 11.0 1.0 M05 Bauer Remote LMI g,r,i,VR,OH,CN,BC,RC,C2,C3 IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Wed Feb-22 3.0 D 11% 19:09-06:06 8.4 / 10.9 1.0 T03 Fodor Remote DEVENY DV5 (500g/mm,5500A),GG420 EM JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV5 (500g/mm,5500A)
Thu Feb-23 4.0 D D 19% 0% 19:10-00:37 00:37-06:05 2.3 / 5.5 5.0 / 5.5 0.5 0.5 N09 T01 Oldroyd Donnelly Remote Remote LMI DEVENY VR,g,r,i DV5 (500g/mm) EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV5 (500g/mm,5500A)
Fri Feb-24 5.0 D D 29% 0% 19:11-00:38 00:38-06:04 1.2 / 5.5 5.0 / 5.4 0.5 0.5 L23 T01 Kunovac Donnelly Remote Remote EXPRES DEVENY DV5 (500g/mm) EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV5 (500g/mm,5500A)
Sat Feb-25 6.0 D 39% 19:12-06:03 5.1 / 10.8 1.0 T03 Fodor Remote DEVENY DV5 (500g/mm,5500A),GG420 BS KT OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV5 (500g/mm,5500A)
Sun Feb-26 7.0 g D D 49% 49% 0% 19:12-00:37 00:37-03:20 03:20-06:02 0.0 / 5.4 1.8 / 2.7 2.2 / 2.7 0.5 0.25 0.25 L10 L14 L07 Ellsworth-Bowers Llama Devogele Remote Remote Remote DEVENY,LMI EXPRES LMI DV6 (600g/mm,4900A),B,V,g,r,i VR,OPEN JJ CS IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV6 (600g/mm,4900A)
Mon Feb-27 8.0 g D 59% 60% 19:13-00:37 00:37-06:00 0.0 / 5.4 3.0 / 5.4 0.5 0.5 L15 L16 Levine Kareta Remote Remote GWAVES,POETS,LMI DEVENY,LMI,NIHTS VR,RC,r u,g,r,i,z,CN,DV1 IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Tue Feb-28 9.0 g D 69% 69% 19:14-03:18 03:18-05:59 0.0 / 8.1 2.1 / 2.7 0.75 0.25 E01 Y01 Engineering Brewer Remote LMI EXPRES r IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)

March 2023 - LDT
DoW Date Moon days Dark Code Max moon Illum Time Range (MST) No moon/ night hrs Frac night Prog ID Principal Remote Instrument Requested Filters/Gratings TO Intended LMI Filter Setup Intended DeVeny Grating
Wed Mar-01 10.0 b g 77% 78% 19:15-00:36 00:36-05:58 0.0 / 5.3 1.2 / 5.4 0.5 0.5 L23 L16 Kunovac Kareta Remote Remote EXPRES DEVENY,LMI,NIHTS u,g,r,i,z,CN,DV1 EM KL OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Thu Mar-02 11.0 b 85% 19:16-05:57 0.5 / 10.7 1.0 L12 Richey-Yowell On-Site DEVENY DV8 (831g/mm,8000A),OG570 EM JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV8 (831g/mm,8000A)
Fri Mar-03 12.0 b b 91% 92% 19:17-03:15 03:15-05:55 0.0 / 8.0 0.0 / 2.7 0.75 0.25 E01 L02 Engineering van Belle Remote LMI EXPRES r BS TAP OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sat Mar-04 13.0 b b 96% 96% 19:18-03:15 03:15-05:54 0.0 / 8.0 0.0 / 2.6 0.75 0.25 E01 Y01 Engineering Brewer Remote LMI EXPRES r BS TAP OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sun Mar-05 14.0 b b 99% 99% 19:18-03:14 03:14-05:53 0.0 / 7.9 0.0 / 2.6 0.75 0.25 E01 Y01 Engineering Brewer Remote LMI EXPRES r CS TAP OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Mon Mar-06 14.5 b b 100% 100% 19:19-03:14 03:14-05:52 0.0 / 7.9 0.0 / 2.6 0.75 0.25 E01 Y01 Engineering Brewer Remote LMI EXPRES r IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Tue Mar-07 13.5 b b b 100% 99% 99% 19:20-19:50 19:50-22:28 22:28-05:50 0.0 / 0.5 0.0 / 2.6 0.0 / 7.4 0.05 0.25 0.7 E01 Y01 E01 Engineering Brewer Engineering Remote LMI EXPRES LMI r r EM JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Wed Mar-08 12.5 b b 97% 97% 19:21-03:12 03:12-05:49 0.0 / 7.8 0.0 / 2.6 0.75 0.25 E01 Y01 Engineering Brewer Remote LMI EXPRES r EM JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Thu Mar-09 11.5 b b 93% 92% 19:22-03:12 03:12-05:48 1.0 / 7.8 0.0 / 2.6 0.75 0.25 E01 Y01 Engineering Brewer Remote LMI EXPRES r EM JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Fri Mar-10 10.5 g 87% 19:23-05:46 2.0 / 10.4 1.0 L11 Richey-Yowell On-Site EXPRES IN JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sat Mar-11 9.5 D g b 0% 78% 77% 19:23-21:59 21:59-03:09 03:09-05:45 2.1 / 2.6 0.9 / 5.2 0.0 / 2.6 0.25 0.5 0.25 Y01 L15 L02 Brewer Levine van Belle Remote Remote Remote EXPRES GWAVES,POETS,LMI EXPRES VR,RC,r IN KT OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sun Mar-12 8.5 D g 0% 69% 19:24-20:24 20:24-05:43 0.5 / 1.0 3.6 / 9.3 0.1 0.9 E01 M06 Engineering Hammerstein Remote LMI DEVENY,LMI r u,g,r,i,z,DV2 (300g/mm,4000A) CS JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Mon Mar-13 7.5 g 58% 19:25-05:42 5.3 / 10.3 1.0 N04 Thomas Remote LMI VR IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Tue Mar-14 6.5 D 46% 19:26-05:41 6.4 / 10.2 1.0 L20 Thirouin Remote LMI VR,r JJ IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Wed Mar-15 5.5 D 34% 19:27-05:39 7.4 / 10.2 1.0 L24 Moskovitz Remote LMI VR OBS EM IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Thu Mar-16 4.5 D D D 0% 0% 24% 19:27-00:33 00:33-03:05 03:05-05:38 4.6 / 5.1 2.5 / 2.5 1.1 / 2.5 0.5 0.25 0.25 M07 L14 L07 Ye Llama Devogele Remote Remote Remote LMI,NIHTS EXPRES LMI g,r,i,z,VR,OH,CN,BC,RC,C2,C3,UC, VR,OPEN JJ EM IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Fri Mar-17 3.5 D 14% 19:28-05:37 9.1 / 10.2 1.0 L18 Wasserman Remote LMI VR EM JJ IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sat Mar-18 2.5 D 0% 19:29-05:35 9.1 / 10.1 1.0 L06 West Remote LMI g,r,i CS KT OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sun Mar-19 1.5 D 0% 19:30-05:34 9.1 / 10.1 1.0 L06 West Remote LMI g,r,i CS JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Mon Mar-20 0.5 D D 0% 0% 19:31-03:02 03:02-05:32 7.0 / 7.5 2.0 / 2.5 0.75 0.25 L23 Y01 Kunovac Brewer Remote Remote EXPRES EXPRES IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Tue Mar-21 0.5 D 0% 19:32-05:31 9.0 / 10.0 1.0 L19 Thirouin Remote LMI VR,g,r,i,z IN KL OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Wed Mar-22 1.5 D 2% 19:33-05:29 9.0 / 9.9 1.0 L19 Thirouin Remote LMI VR,g,r,i,z JJ EM IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Thu Mar-23 2.5 D 7% 19:33-05:28 7.9 / 9.9 1.0 L06 West Remote LMI g,r,i EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Fri Mar-24 3.5 D 14% 19:34-05:27 6.8 / 9.9 1.0 L06 West Remote LMI g,r,i EM BS JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sat Mar-25 4.5 D 23% 19:35-05:25 5.7 / 9.8 1.0 B02 Ould Rouis Remote DEVENY DV2 (300g/mm,4000A) BS KT OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sun Mar-26 5.5 D 32% 19:36-05:24 4.6 / 9.8 1.0 L20 Thirouin Remote LMI VR,r JJ CS IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Mon Mar-27 6.5 g g D 41% 42% 0% 19:37-22:03 22:03-02:56 02:56-05:22 0.0 / 2.4 1.6 / 4.9 1.9 / 2.4 0.25 0.5 0.25 L07 N07 L14 Devogele Emery Llama Remote Remote Remote LMI LMI EXPRES VR,OPEN g,r,i,z,VR IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Tue Mar-28 7.5 g D 51% 52% 19:38-00:29 00:29-05:21 0.0 / 4.8 2.7 / 4.9 0.5 0.5 L16 M07 Kareta Ye Remote Remote DEVENY,LMI,NIHTS LMI,NIHTS u,g,r,i,z,CN,DV1 g,r,i,z,VR,OH,CN,BC,RC,C2,C3,UC CS IN KT OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Wed Mar-29 8.5 g g 60% 62% 19:38-22:03 22:03-05:19 0.0 / 2.4 1.9 / 7.3 0.25 0.75 L14 L23 Llama Kunovac Remote Remote EXPRES EXPRES JJ EM IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Thu Mar-30 9.5 g g g 69% 70% 71% 19:39-22:04 22:04-00:28 00:28-05:18 0.0 / 2.4 0.0 / 2.4 1.2 / 4.8 0.25 0.25 0.5 E01 Y01 E03 Engineering Brewer Ellsworth-Bowers Remote Remote LMI EXPRES DEVENY r DV1 (150g/mm,5000A) EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Fri Mar-31 10.5 b g 79% 79% 19:40-02:52 02:52-05:16 0.0 / 7.2 0.6 / 2.4 0.75 0.25 E01 Y01 Engineering Brewer Remote LMI EXPRES r EM BS KT OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)

April 2023 - LDT
DoW Date Moon days Dark Code Max moon Illum Time Range (MST) No moon/ night hrs Frac night Prog ID Principal Remote Instrument Requested Filters/Gratings TO Intended LMI Filter Setup Intended DeVeny Grating
Sat Apr-01 11.5 b 87% 19:41-05:15 0.1 / 9.6 1.0 L11 Richey-Yowell On-Site EXPRES BS TAP IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sun Apr-02 12.5 b 93% 19:42-05:13 0.0 / 9.5 1.0 L03 van Belle Remote QWSSI IN TAP OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Mon Apr-03 13.5 b 97% 19:43-05:12 0.0 / 9.5 1.0 L03 van Belle Remote QWSSI IN TAP OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Tue Apr-04 14.5 b b 99% 99% 19:44-02:48 02:48-05:10 0.0 / 7.1 0.0 / 2.4 0.75 0.25 L05 Y01 Horch Brewer Remote Remote QWSSI EXPRES 577nm,658nm,808nm,880nm CS BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Wed Apr-05 13.9 b 100% 19:45-05:09 0.0 / 9.4 1.0 L05 Horch Remote QWSSI 577nm,658nm,808nm,880nm EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Thu Apr-06 12.9 b b 99% 98% 19:45-02:47 02:47-05:08 0.0 / 7.0 0.0 / 2.4 0.75 0.25 L05 Y01 Horch Brewer Remote Remote QWSSI EXPRES 577nm,658nm,808nm,880nm EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Fri Apr-07 11.9 D b b 0% 96% 95% 18:46-20:17 20:17-22:06 22:06-05:06 0.0 / 0.5 0.5 / 1.8 0.0 / 7.0 0.06 0.19 0.75 L21 Y01 L04 Thirouin Brewer van Belle Remote Remote Remote LMI EXPRES QWSSI VR,r EM IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sat Apr-08 10.9 D g b 0% 90% 90% 18:47-21:20 21:20-22:07 22:07-05:05 1.0 / 1.6 0.6 / 0.8 0.0 / 7.0 0.17 0.08 0.75 B03 Y01 L04 Schmidt Brewer van Belle Remote Remote Remote DEVENY,EXPRES EXPRES QWSSI DV9 (1200g/mm),ThAr IN JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV9 (1200g/mm,5000A)
Sun Apr-09 9.9 D g b 0% 82% 81% 18:48-21:20 21:20-00:26 00:26-05:03 1.0 / 1.5 1.7 / 3.1 0.0 / 4.6 0.17 0.34 0.5 B03 E01 L04 Schmidt Engineering van Belle Remote Remote DEVENY,EXPRES LMI QWSSI DV9 (1200g/mm),ThAr r CS JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV9 (1200g/mm,5000A)
Mon Apr-10 8.9 D g 0% 72% 18:49-21:20 21:20-05:02 1.0 / 1.5 2.9 / 7.7 0.16 0.84 B03 E01 Schmidt Engineering Remote DEVENY,EXPRES LMI DV9 (1200g/mm),ThAr r IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV9 (1200g/mm,5000A)
Tue Apr-11 7.9 D D g 0% 61% 61% 18:49-21:20 21:20-02:00 02:00-05:00 1.0 / 1.5 3.9 / 4.7 0.0 / 3.0 0.16 0.51 0.33 B03 L15 Y01 Schmidt Levine Brewer Remote Remote Remote DEVENY,EXPRES GWAVES,POETS,LMI EXPRES DV9 (1200g/mm),ThAr VR,RC,r CS BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV9 (1200g/mm,5000A)
Wed Apr-12 6.9 D D 0% 49% 18:50-20:22 20:22-04:59 0.0 / 0.5 5.8 / 8.6 0.06 0.94 L21 B04 Thirouin Brainerd Remote Remote LMI DEVENY VR,r DV3 (300g/mm,6750A),GG420 BS JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV3 (300g/mm,6750A)
Thu Apr-13 5.9 D D 0% 38% 18:51-20:23 20:23-04:57 0.0 / 0.5 6.6 / 8.6 0.06 0.94 L21 L11 Thirouin Richey-Yowell Remote On-Site LMI EXPRES VR,r BS KT OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Fri Apr-14 4.9 D D D D 0% 0% 0% 27% 18:52-20:25 20:25-22:09 22:09-00:24 00:24-04:56 0.0 / 0.5 1.7 / 1.7 2.2 / 2.2 3.2 / 4.5 0.06 0.19 0.25 0.5 L21 Y01 L07 T02 Thirouin Brewer Devogele Rosenwasser Remote Remote Remote Remote LMI EXPRES LMI DEVENY VR,r VR,OPEN DV4 IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV4 (400g/mm,8500A)
Sat Apr-15 3.9 D D D 0% 0% 17% 18:53-20:26 20:26-02:00 02:00-04:55 0.0 / 0.5 5.6 / 5.6 2.2 / 2.9 0.06 0.62 0.32 L21 L16 Y01 Thirouin Kareta Brewer Remote Remote Remote LMI DEVENY,LMI,NIHTS EXPRES VR,r u,g,r,i,z,CN,BC,CO+,DV1 IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV1 (150g/mm,5000A)
Sun Apr-16 2.9 D D 0% 9% 18:53-20:27 20:27-04:53 0.0 / 0.5 7.9 / 8.4 0.06 0.94 L21 L20 Thirouin Thirouin Remote Remote LMI LMI VR,r VR,r CS KL OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV2 (300g/mm,4000A)
Mon Apr-17 1.9 D 0% 19:56-04:52 7.9 / 8.9 1.0 B02 Ould Rouis Remote DEVENY DV2 (300g/mm,4000A) IN KL OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV2 (300g/mm,4000A)
Tue Apr-18 0.9 D 0% 19:56-04:50 7.8 / 8.9 1.0 T03 Fodor Remote DEVENY DV5 (500g/mm,5500A),GG420 BS KL OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV5 (500g/mm,5500A)
Wed Apr-19 0.1 D 0% 19:57-04:49 7.8 / 8.9 1.0 T03 Fodor Remote DEVENY DV5 (500g/mm,5500A),GG420 BS KT OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV5 (500g/mm,5500A)
Thu Apr-20 1.1 D 0% 19:58-04:48 7.8 / 8.8 1.0 L19 Thirouin Remote LMI VR,g,r,i,z EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV2 (300g/mm,4000A)
Fri Apr-21 2.1 D 4% 19:59-04:46 7.3 / 8.8 1.0 L19 Thirouin Remote LMI VR,g,r,i,z EM JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV2 (300g/mm,4000A)
Sat Apr-22 3.1 D 10% 20:00-04:45 6.2 / 8.8 1.0 M06 Hammerstein Remote DEVENY,LMI u,g,r,i,z,DV2 (300g/mm,4000A) EM JJ CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV2 (300g/mm,4000A)
Sun Apr-23 4.1 D 17% 20:01-04:44 5.1 / 8.7 1.0 L18 Wasserman Remote LMI VR CS JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV2 (300g/mm,4000A)
Mon Apr-24 5.1 D 26% 20:02-04:42 4.2 / 8.7 1.0 L01 Grundy Remote LMI VR,g,r,i,z KT CS BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV2 (300g/mm,4000A)
Tue Apr-25 6.1 D g 35% 33% 20:03-04:41 20:36-21:06 3.3 / 8.6 0.0 / 0.5 1.0 0.06 L20 M02 Thirouin Cenko Remote ToO LMI DEVENY,LMI VR,r CS BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV2 (300g/mm,4000A)
Wed Apr-26 7.1 g 44% 20:04-04:40 2.6 / 8.6 1.0 L01 Grundy Remote LMI VR,g,r,i,z EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV2 (300g/mm,4000A)
Thu Apr-27 8.1 g g 53% 54% 20:05-22:13 22:13-04:38 0.0 / 2.1 1.9 / 6.4 0.25 0.75 L07 L23 Devogele Kunovac Remote Remote LMI EXPRES VR,OPEN EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV2 (300g/mm,4000A)
Fri Apr-28 9.1 g g 63% 64% 20:06-00:21 00:21-04:37 0.0 / 4.2 1.4 / 4.3 0.5 0.5 E03 L16 Ellsworth-Bowers Kareta Remote Remote DEVENY DEVENY,LMI,NIHTS DV1 (150g/mm,5000A) u,g,r,i,z,CN,BC,CO+,DV1 EM IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV1 (150g/mm,5000A)
Sat Apr-29 10.1 b D 73% 73% 20:07-02:29 02:29-04:36 0.0 / 6.4 0.9 / 2.1 0.75 0.25 E01 Y01 Engineering Brewer Remote LMI EXPRES r EM IN JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV2 (300g/mm,4000A)
Sun Apr-30 11.1 b g 80% 81% 20:08-22:15 22:15-04:35 0.0 / 2.1 0.5 / 6.3 0.25 0.75 L14 L23 Llama Kunovac Remote Remote EXPRES EXPRES IN JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV2 (300g/mm,4000A)

May 2023 - LDT
DoW Date Moon days Dark Code Max moon Illum Time Range (MST) No moon/ night hrs Frac night Prog ID Principal Remote Instrument Requested Filters/Gratings TO Intended LMI Filter Setup Intended DeVeny Grating
Mon May-01 12.1 b g 88% 88% 20:09-02:28 02:28-04:34 0.0 / 6.3 0.0 / 2.1 0.75 0.25 E01 L02 Engineering van Belle Remote LMI EXPRES r IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV2 (300g/mm,4000A)
Tue May-02 13.1 b b 94% 94% 20:10-02:26 02:26-04:32 0.0 / 6.3 0.0 / 2.1 0.75 0.25 E01 Y01 Engineering Brewer Remote LMI EXPRES r CS BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV2 (300g/mm,4000A)
Wed May-03 14.1 b b 98% 98% 20:11-02:26 02:26-04:31 0.0 / 6.2 0.0 / 2.1 0.75 0.25 E01 Y01 Engineering Brewer Remote LMI EXPRES r EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV2 (300g/mm,4000A)
Thu May-04 14.3 b b b 100% 100% 100% 20:12-02:26 20:51-21:47 02:26-04:30 0.0 / 6.2 0.0 / 0.9 0.0 / 2.1 0.75 0.11 0.25 E01 M02 Y01 Engineering Cenko Brewer ToO Remote LMI DEVENY,LMI EXPRES r EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV2 (300g/mm,4000A)
Fri May-05 13.3 b b b 100% 100% 99% 20:13-22:17 22:17-02:25 02:25-04:29 0.0 / 2.1 0.0 / 4.1 0.0 / 2.1 0.25 0.5 0.25 E01 E01 Y01 Engineering Engineering Brewer Remote LMI,EYE LMI EXPRES r r EM IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV2 (300g/mm,4000A)
Sat May-06 12.3 g b b 97% 97% 97% 20:14-22:18 22:18-02:24 02:24-04:28 0.0 / 2.1 0.0 / 4.1 0.0 / 2.1 0.25 0.5 0.25 E01 E01 Y01 Engineering Engineering Brewer Remote LMI,EYE LMI EXPRES r r IN JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV2 (300g/mm,4000A)
Sun May-07 11.3 g b 92% 91% 20:15-02:24 02:24-04:27 1.2 / 6.2 0.0 / 2.0 0.75 0.25 E01 Y01 Engineering Brewer Remote LMI EXPRES r JJ CS IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV2 (300g/mm,4000A)
Mon May-08 10.3 g b 84% 84% 20:16-02:23 02:23-04:25 2.3 / 6.1 0.0 / 2.0 0.75 0.25 E03 Y01 Ellsworth-Bowers Brewer Remote Remote DEVENY EXPRES DV1 (150g/mm,5000A) IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV1 (150g/mm,5000A)
Tue May-09 9.3 D b 75% 75% 20:17-00:21 00:21-04:24 3.2 / 4.1 0.0 / 4.0 0.5 0.5 L16 E01 Kareta Engineering Remote DEVENY,LMI,NIHTS LMI u,g,r,i,z,CN,BC,CO+,DV1 r CS BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV1 (150g/mm,5000A)
Wed May-10 8.3 g 64% 20:18-04:23 4.1 / 8.1 1.0 L11 Richey-Yowell Remote EXPRES EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV2 (300g/mm,4000A)
Thu May-11 7.3 D 52% 20:19-04:22 4.7 / 8.1 1.0 B02 Ould Rouis On-Site DEVENY DV2 (300g/mm,4000A) EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV2 (300g/mm,4000A)
Fri May-12 6.3 D D 0% 41% 20:20-00:20 00:20-04:21 3.4 / 4.0 1.9 / 4.0 0.5 0.5 L15 L15 Levine Levine Remote Remote GWAVES,POETS,LMI GWAVES,POETS,LMI VR,RC,r EM IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR CO+ DV2 (300g/mm,4000A)
Sat May-13 5.3 D D D 0% 0% 30% 20:21-00:21 00:21-02:20 02:20-04:20 3.4 / 4.0 2.0 / 2.0 0.4 / 2.0 0.5 0.25 0.25 M07 L07 L14 Ye Devogele Llama Remote Remote Remote LMI,NIHTS LMI EXPRES g,r,i,z,VR,OH,CN,BC,RC,C2,C3,UC VR,OPEN IN JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sun May-14 4.3 D 20% 20:22-04:19 6.3 / 8.0 1.0 M06 Hammerstein Remote DEVENY,LMI u,g,r,i,z,DV2 (300g/mm,4000A) JJ CS IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Mon May-15 3.3 D 11% 20:23-04:18 6.7 / 7.9 1.0 B04 Brainerd Remote DEVENY DV3 (300g/mm,6750A),GG420 IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV3 (300g/mm,6750A)
Tue May-16 2.3 D 5% 20:24-04:18 6.7 / 7.9 1.0 L18 Wasserman Remote LMI VR CS BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Wed May-17 1.3 D 0% 20:25-04:17 6.7 / 7.9 1.0 M05 Bauer Remote LMI g,r,i,VR,OH,CN,BC,RC,C2,C3 EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Thu May-18 0.3 D 0% 20:26-04:16 6.6 / 7.8 1.0 T02 Rosenwasser Remote DEVENY DV4 EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV4 (400g/mm,8500A)
Fri May-19 0.7 D D 0% 0% 20:26-00:21 00:21-04:15 3.3 / 3.9 3.3 / 3.9 0.5 0.5 L15 L16 Levine Kareta Remote Remote GWAVES,POETS,LMI DEVENY,LMI,NIHTS VR,RC,r u,g,r,i,z,CN,DV1 BS EM IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Sat May-20 1.7 D 2% 20:27-04:14 6.5 / 7.8 1.0 T03 Fodor Remote DEVENY DV5 (500g/mm,5500A),GG420 CS JJ OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV5 (500g/mm,5500A)
Sun May-21 2.7 D 6% 20:28-04:13 5.8 / 7.8 1.0 T03 Fodor Remote DEVENY DV5 (500g/mm,5500A),GG420 EM CS IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV5 (500g/mm,5500A)
Mon May-22 3.7 D D D 12% 12% 0% 20:29-22:25 22:25-00:21 00:21-04:13 0.0 / 1.9 1.6 / 1.9 3.2 / 3.9 0.25 0.25 0.5 N02 Y01 M07 Trujillo Brewer Ye On-Site Remote Remote LMI EXPRES LMI,NIHTS VR,V,I,g,r g,r,i,z,VR,OH,CN,BC,RC,C2,C3,UC IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Tue May-23 4.7 D D D D 19% 20% 0% 0% 20:30-22:26 22:26-00:21 00:21-02:16 02:16-04:12 0.0 / 1.9 0.9 / 1.9 1.9 / 1.9 1.3 / 1.9 0.25 0.25 0.25 0.25 N02 Y01 L07 L17 Trujillo Brewer Devogele Schleicher On-Site Remote Remote Remote LMI EXPRES LMI LMI VR,V,I,g,r VR,OPEN VR,R,CN,BC EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Wed May-24 5.7 g D D 28% 0% 0% 20:31-00:21 00:21-02:16 02:16-04:11 0.2 / 3.8 1.9 / 1.9 1.3 / 1.9 0.5 0.25 0.25 L16 Y01 L17 Kareta Brewer Schleicher Remote Remote Remote DEVENY,LMI,NIHTS EXPRES LMI u,g,r,i,z,CN,DV1 VR,R,CN,BC EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Thu May-25 6.7 g D D 37% 37% 0% 20:32-00:22 00:22-02:16 02:16-04:11 0.0 / 3.8 1.6 / 1.9 1.3 / 1.9 0.5 0.25 0.25 N01 L02 L17 Strauss van Belle Schleicher On-Site Remote Remote LMI EXPRES LMI VR VR,R,CN,BC OBS BS EM OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Fri May-26 7.7 g 47% 20:33-04:10 2.4 / 7.6 1.0 E03 Ellsworth-Bowers Remote DEVENY DV1 (150g/mm,5000A) JF EM IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Sat May-27 8.7 g 56% 20:34-04:09 1.9 / 7.6 1.0 E03 Ellsworth-Bowers Remote DEVENY DV1 (150g/mm,5000A) IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Sun May-28 9.7 g 66% 20:34-04:09 1.5 / 7.6 1.0 E03 Ellsworth-Bowers Remote DEVENY DV1 (150g/mm,5000A) JJ CS IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Mon May-29 10.7 g 75% 20:35-04:08 1.1 / 7.5 1.0 L23 Kunovac Remote EXPRES IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Tue May-30 11.7 b g D 83% 84% 0% 20:36-01:52 01:52-03:45 03:45-04:08 0.0 / 5.3 0.7 / 1.9 0.0 / 0.4 0.7 0.25 0.05 E01 Y01 L17 Engineering Brewer Schleicher Remote Remote LMI,EYE EXPRES LMI r VR,R,CN,OH,BC JJ BS EM OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Wed May-31 12.7 b g 91% 91% 20:37-02:15 02:15-04:07 0.0 / 5.6 0.2 / 1.9 0.75 0.25 E03 Y01 Ellsworth-Bowers Brewer Remote Remote DEVENY EXPRES DV1 (150g/mm,5000A) EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)

June 2023 - LDT
DoW Date Moon days Dark Code Max moon Illum Time Range (MST) No moon/ night hrs Frac night Prog ID Principal Remote Instrument Requested Filters/Gratings TO Intended LMI Filter Setup Intended DeVeny Grating
Thu Jun-01 13.7 b b 96% 96% 20:37-02:15 02:15-04:07 0.0 / 5.6 0.0 / 1.9 0.75 0.25 E01 Y01 Engineering Brewer Remote LMI EXPRES r EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Fri Jun-02 14.7 b b 99% 99% 20:38-02:14 02:14-04:06 0.0 / 5.6 0.0 / 1.9 0.75 0.25 E01 Y01 Engineering Brewer Remote LMI EXPRES r EM CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sat Jun-03 13.9 b b b 100% 100% 100% 20:39-01:52 01:52-03:44 03:44-04:06 0.0 / 5.2 0.0 / 1.9 0.0 / 0.4 0.7 0.25 0.05 E01 Y01 L17 Engineering Brewer Schleicher Remote Remote LMI EXPRES LMI r VR,R,CN,OH,BC IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sun Jun-04 12.9 b b b 98% 98% 98% 20:40-01:52 01:52-03:44 03:44-04:06 0.0 / 5.2 0.0 / 1.9 0.0 / 0.4 0.7 0.25 0.05 E01 Y01 L17 Engineering Brewer Schleicher Remote Remote LMI EXPRES LMI r VR,R,CN,OH,BC IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Mon Jun-05 11.9 b b b 94% 93% 93% 20:40-01:52 01:52-03:43 03:43-04:05 0.6 / 5.2 0.0 / 1.9 0.0 / 0.4 0.7 0.25 0.05 E01 Y01 L17 Engineering Brewer Schleicher Remote Remote LMI EXPRES LMI r VR,R,CN,OH,BC IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Tue Jun-06 10.9 g b b 87% 86% 85% 20:41-01:52 01:52-03:43 03:43-04:05 1.6 / 5.2 0.0 / 1.9 0.0 / 0.4 0.7 0.25 0.05 E01 Y01 L17 Engineering Brewer Schleicher Remote Remote LMI EXPRES LMI r VR,R,CN,OH,BC EM CS IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Wed Jun-07 9.9 g b b 77% 77% 76% 20:42-01:52 01:52-03:43 03:43-04:05 2.3 / 5.2 0.0 / 1.9 0.0 / 0.4 0.7 0.25 0.05 E01 Y01 L17 Engineering Brewer Schleicher Remote Remote LMI,EYE EXPRES LMI r VR,R,CN,OH,BC EM CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Thu Jun-08 8.9 D g g 67% 66% 65% 20:42-01:52 01:52-03:43 03:43-04:05 2.9 / 5.2 0.0 / 1.9 0.0 / 0.4 0.7 0.25 0.05 E03 Y01 L17 Ellsworth-Bowers Brewer Schleicher Remote Remote Remote DEVENY EXPRES LMI DV1 (150g/mm,5000A) VR,R,CN,OH,BC EM CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Fri Jun-09 7.9 D 55% 20:43-04:04 3.4 / 7.3 1.0 L12 Richey-Yowell On-Site DEVENY DV8 (831g/mm,8000A),OG570 EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV8 (831g/mm,8000A)
Sat Jun-10 6.9 D g 0% 44% 20:43-00:24 00:24-04:04 3.0 / 3.7 0.9 / 3.7 0.5 0.5 E01 N03 Engineering Trilling Remote LMI,EYE LMI r g,r,i,z IN BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sun Jun-11 5.9 D D 0% 33% 19:33-22:00 22:00-04:04 0.6 / 1.3 3.8 / 6.1 0.17 0.83 B03 L12 Schmidt Richey-Yowell Remote Remote EXPRES DEVENY ThAr DV8 (831g/mm,8000A),OG570 IN BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV8 (831g/mm,8000A)
Mon Jun-12 4.9 D D D D 0% 0% 0% 23% 19:34-22:00 22:00-22:34 22:34-00:24 00:24-04:04 0.6 / 1.3 0.6 / 0.6 1.8 / 1.8 1.8 / 3.7 0.17 0.08 0.25 0.5 B03 Y01 L07 L10 Schmidt Brewer Devogele Ellsworth-Bowers Remote Remote Remote On-Site EXPRES EXPRES LMI DEVENY,LMI ThAr VR,OPEN DV6 (600g/mm,4900A),B,V,g,r,i IN BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV6 (600g/mm,4900A)
Tue Jun-13 3.9 D D 0% 14% 20:45-00:24 00:24-04:04 3.0 / 3.6 2.3 / 3.7 0.5 0.5 L15 L17 Levine Schleicher Remote Remote GWAVES,POETS,LMI LMI VR,RC,r VR,R,CN,OH,BC EM BS IN OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Wed Jun-14 2.9 D D 0% 8% 20:45-00:25 00:25-04:04 3.0 / 3.7 2.8 / 3.6 0.5 0.5 L18 L17 Wasserman Schleicher Remote Remote LMI LMI VR VR,R,CN,OH,BC BS JF OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Thu Jun-15 1.9 D D 0% 3% 20:46-00:25 00:25-04:04 3.0 / 3.6 3.0 / 3.6 0.5 0.5 L16 L17 Kareta Schleicher Remote Remote DEVENY,LMI,NIHTS LMI u,g,r,i,z,CN,DV1 VR,R,CN,OH,BC OBS BS JF OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Fri Jun-16 0.9 D D D 0% 0% 0% 19:35-22:00 22:00-00:25 00:25-04:04 0.6 / 1.2 2.4 / 2.4 3.0 / 3.6 0.17 0.33 0.5 B03 L14 L17 Schmidt Llama Schleicher Remote Remote Remote EXPRES EXPRES LMI ThAr VR,R,CN,OH,BC CS SL OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sat Jun-17 0.1 D 0% 20:46-04:04 6.0 / 7.3 1.0 L19 Thirouin Remote LMI VR,g,r,i,z IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sun Jun-18 1.1 D D 0% 0% 20:47-00:26 00:26-04:04 3.0 / 3.6 3.0 / 3.6 0.5 0.5 E01 N06 Engineering Emery Remote LMI DEVENY r DV1 (150g/mm) IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Mon Jun-19 2.1 D 4% 20:47-04:05 6.0 / 7.3 1.0 B02 Ould Rouis Remote DEVENY DV8 IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV8 (831g/mm,8000A)
Tue Jun-20 3.1 D D D 8% 8% 0% 19:36-22:00 22:00-00:26 00:26-04:05 0.0 / 1.2 2.4 / 2.4 3.0 / 3.6 0.17 0.33 0.5 B03 E01 L08 Schmidt Engineering Hanley Remote Remote EXPRES LMI EXPRES,NIHTS ThAr r IN CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Wed Jun-21 4.1 D D D 15% 0% 0% 20:47-23:30 23:30-01:02 01:02-04:05 0.8 / 2.7 1.5 / 1.5 2.4 / 3.0 0.37 0.21 0.42 L27 L15 L08 Archer Levine Hanley Remote Remote Remote DEVENY GWAVES,POETS,LMI EXPRES,NIHTS DV5 EM CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV5 (500g/mm,5500A)
Thu Jun-22 5.1 D 22% 20:48-04:05 4.3 / 7.3 1.0 M06 Hammerstein Remote DEVENY,LMI u,g,r,i,z,DV2 (300g/mm,4000A) EM CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Fri Jun-23 6.1 g D D 30% 0% 0% 20:48-00:05 00:05-03:44 03:44-04:06 0.5 / 3.3 3.4 / 3.6 0.0 / 0.4 0.45 0.5 0.05 E01 L10 L17 Engineering Ellsworth-Bowers Schleicher Remote Remote LMI DEVENY,LMI LMI r DV6 (600g/mm,4900A),B,V,g,r,i VR,R,CN,OH,BC EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV6 (600g/mm,4900A)
Sat Jun-24 7.1 g g D 39% 40% 0% 19:37-22:00 22:00-00:27 00:27-04:06 0.0 / 1.2 0.4 / 2.5 3.0 / 3.6 0.16 0.34 0.5 B03 L14 L08 Schmidt Llama Hanley Remote Remote Remote EXPRES EXPRES EXPRES,NIHTS ThAr IN BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Sun Jun-25 8.1 g g g D 49% 49% 49% 0% 19:37-22:00 22:00-22:38 22:38-00:27 00:27-04:06 0.0 / 1.2 0.0 / 0.6 0.0 / 1.8 3.0 / 3.6 0.16 0.09 0.25 0.5 B03 Y01 L07 N09 Schmidt Brewer Devogele Oldroyd Remote Remote Remote Remote EXPRES EXPRES LMI LMI ThAr VR,OPEN VR,g,r,i IN BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Mon Jun-26 9.1 g D D 59% 59% 0% 20:48-00:06 00:06-03:45 03:45-04:07 0.0 / 3.3 2.6 / 3.6 0.0 / 0.4 0.45 0.5 0.05 E01 L10 L17 Engineering Ellsworth-Bowers Schleicher Remote Remote LMI DEVENY,LMI LMI r DV6 (600g/mm,4900A),B,V,g,r,i VR,R,CN,OH,BC IN BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV6 (600g/mm,4900A)
Tue Jun-27 10.1 g g 69% 69% 20:48-04:07 20:57-22:57 2.2 / 7.3 0.0 / 2.0 1.0 0.27 L19 M01 Thirouin Andreoni Remote ToO LMI DEVENY,LMI VR,g,r,i,z u,g,r,i,z,DV2 (300g/mm,4000A) IN BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)
Wed Jun-28 11.1 b b g 78% 78% 79% 20:48-22:38 22:38-00:28 00:28-04:07 0.0 / 1.8 0.0 / 1.8 1.7 / 3.6 0.25 0.25 0.5 E01 L14 L08 Engineering Llama Hanley Remote Remote LMI EXPRES EXPRES,NIHTS r EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Thu Jun-29 12.1 b g 87% 87% 20:48-00:28 00:28-04:08 0.0 / 3.7 1.2 / 3.7 0.5 0.5 E03 N06 Ellsworth-Bowers Emery Remote Remote DEVENY DEVENY DV1 (150g/mm,5000A) DV1 (150g/mm) EM BS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV1 (150g/mm,5000A)
Fri Jun-30 13.1 b b g 93% 93% 94% 20:48-22:38 22:38-00:28 00:28-04:08 0.0 / 1.8 0.0 / 1.8 0.5 / 3.7 0.25 0.25 0.5 E01 L14 L08 Engineering Llama Hanley Remote Remote LMI EXPRES EXPRES,NIHTS r EM CS OPEN DARK OH C3 BC I R V B UC OPEN u g r i z CN RC VR C2 DV2 (300g/mm,4000A)

Note: Half-night handover times are calculated for local astronomical midnight.

Note: Nominal night duration is from Nautical Twilight (12deg) to Nautical Twilight.

Program ID codes: L=Lowell, B=BU, G=UT/KASI(IGRINS), M=UMd/GSFC, N=NAU, NL=Joint NAU/Lowell, T=UToledo, Y=Yale, E=Engineering

Dark code (D=dark, g=gray, b=bright) methodology: At a time resolution of 1 minute, calculate the fractional illumination of the moon for the allocated time (ignoring time during astronomical/nautical/civil twilights & setting to zero for when the moon is below the horizon). Determine the dark code from the mean value of this metric where D=dark for <={0}, g=gray for <={1}, and b=bright for >0.7.

Remote: If entry is "Remote Requested", then remote observing request is pending and not yet approved. If entry is "Remote" then remote request is approved. If entry is blank, or is "On-Site", then observers are expected to be on-site at LDT.

Bolded red items are Time Critical Observations, during which ToO interrupts will not be accepted.

Italicized gray items are engineering optional interrupts (EOI) for brief testing. Principal will be notified before the start of the prior night if any of this time will be used for a quick engineering test.

2023A Approved Target of Opportunity (ToO) Programs
Program ID Principal ToO Type Time Allocated (hours) Time Remaining (hours) Requested Instrument & Filters/Grating
L07 Devogele Slow 2.00 2.00 LMI: VR,OPEN
L22 Thirouin Slow 2.00 2.00 LMI: VR,r'
L26 Moskovitz Slow 6.00 4.50 DEVENY,LMI,NIHTS: u,g,r,i,z,VR,DV1 (150g/mm preferred) or DV2 (300g/mm)
M01 Andreoni Rapid 6.00 4.00 DEVENY,LMI: u,g,r,i,z,DV2 (300g/mm,4000A)
M01 Andreoni Slow 18.00 18.00 LMI: u,g,r,i,z
M02 Cenko Rapid 2.00 0.50 DEVENY,LMI:
M03 Ye Slow 0.50 0.00 EXPRES:
M03 Ye Slow 1.50 1.00 DEVENY,LMI,NIHTS: OH,CN,BC,RC,DV2 (300g/mm)
Totals 38.00 32.00

On nights when the DeVeny is not in use, it should be left in the following configuration in order to be ready for ToO programs:

	Grating: DV2 (300 lines / mm, 4000A blaze)
	Grating tilt: 22.28
	Collimator Focus: 11.25 mm
	Slit Width: 1.5" (0.23 mm)
	Rear Filter Wheel: Clear
	Front Filter Wheel: Clear

Targets of Opportunity (ToO) requests: 1) will only be accepted for approved ToO programs. 2) will not be accepted during any Time Critical Observation (TCO). 3) May be requested during engineering time (programs designated ENN), but will be accepted, delayed, or rejected at the discretion of the Principal or Lead Engineer for that engineering time. Click here to link to LDT policies regarding ToO programs.

Operations Staff (Position) email at lowell.edu:
    Amanda Bosh (COO) AB; amanda@
    Timothy Ellsworth-Bowers (SuppAst) TB; tbowers@
    Jose Fernandez (LDTNtOpsMgr) JF; jfernandez@
    Jane Jedlink (Safety) JJ; jjedlink@
    Thomas Kelley (RsrchAsst) TK; tkelley@
    Kyler Kuehn (DirTech) KK; kkuehn@
    Stephen Levine (Ast/TelSci/DirEd) SL; sel@
    Kelly Loo (Safety) KL; kloo@
    Erin Maier (TelOp) EM; emaier@
    Ishara Nisley (TelOp) IN; inisley@
    Observer (Observer) OBS;
    Tom Polakis (Safety) TAP; tpolakis@
    Curt Schneider (Safety) CDS; cschneider@
    Ben Shafransky (TelOp) BS; bshafransky@
    Cecilia Siqueiros (TelOp) CS; csiqueiros@
    Gary Stouder (Safety) GS;
    Kathryn Turrentine (Safety) KT; kturrentine@
    Visitor (Visitor) VST; 

Summary of dates on which approved programs are scheduled (note some dates are partial nights):
B01 Ye                 2023-01-30, 2023-01-31
B02 Ould Rouis         2023-02-15, 2023-03-25, 2023-04-17, 2023-05-11, 2023-06-19
B03 Schmidt            2023-04-08, 2023-04-09, 2023-04-10, 2023-04-11, 2023-06-11, 2023-06-12
                       2023-06-16, 2023-06-20, 2023-06-24, 2023-06-25
B04 Brainerd           2023-04-12, 2023-05-15
L01 Grundy             2023-02-11, 2023-04-24, 2023-04-26
L02 van Belle          2023-01-02, 2023-01-16, 2023-02-01, 2023-02-05, 2023-03-03, 2023-03-11
                       2023-05-01, 2023-05-25
L03 van Belle          2023-04-02, 2023-04-03
L04 van Belle          2023-04-07, 2023-04-08, 2023-04-09
L05 Horch              2023-04-04, 2023-04-05, 2023-04-06
L06 West               2023-02-17, 2023-02-18, 2023-03-18, 2023-03-19, 2023-03-23, 2023-03-24
L07 Devogele           2023-01-15, 2023-01-27, 2023-02-13, 2023-02-26, 2023-03-16, 2023-03-27
                       2023-04-14, 2023-04-27, 2023-05-13, 2023-05-23, 2023-06-12, 2023-06-25
L08 Hanley             2023-06-20, 2023-06-21, 2023-06-24, 2023-06-28, 2023-06-30
L09 Hanley             2023-01-02, 2023-01-07, 2023-01-15, 2023-01-16, 2023-01-27, 2023-01-29
                       2023-01-30, 2023-01-31
L10 Ellsworth-Bowers   2023-01-28, 2023-02-08, 2023-02-26, 2023-06-12, 2023-06-23, 2023-06-26
L11 Richey-Yowell      2023-02-06, 2023-03-10, 2023-04-01, 2023-04-13, 2023-05-10
L12 Richey-Yowell      2023-01-03, 2023-03-02, 2023-06-09, 2023-06-11
L13 Llama              2023-01-09, 2023-01-10, 2023-02-13, 2023-02-14
L14 Llama              2023-01-07, 2023-01-09, 2023-01-10, 2023-02-13, 2023-02-26, 2023-03-16
                       2023-03-27, 2023-03-29, 2023-04-30, 2023-05-13, 2023-06-16, 2023-06-24
                       2023-06-28, 2023-06-30
L15 Levine             2023-01-20, 2023-02-27, 2023-03-11, 2023-04-11, 2023-05-12, 2023-05-19
                       2023-06-13, 2023-06-21
L16 Kareta             2023-01-02, 2023-01-07, 2023-01-12, 2023-01-20, 2023-01-26, 2023-02-09
                       2023-02-27, 2023-03-01, 2023-03-28, 2023-04-15, 2023-04-28, 2023-05-09
                       2023-05-19, 2023-05-24, 2023-06-15
L17 Schleicher         2023-05-23, 2023-05-24, 2023-05-25, 2023-05-30, 2023-06-03, 2023-06-04
                       2023-06-05, 2023-06-06, 2023-06-07, 2023-06-08, 2023-06-13, 2023-06-14
                       2023-06-15, 2023-06-16, 2023-06-23, 2023-06-26
L18 Wasserman          2023-01-22, 2023-02-19, 2023-03-17, 2023-04-23, 2023-05-16, 2023-06-14
L19 Thirouin           2023-03-21, 2023-03-22, 2023-04-20, 2023-04-21, 2023-06-17, 2023-06-27
L20 Thirouin           2023-03-14, 2023-03-26, 2023-04-16, 2023-04-25
L21 Thirouin           2023-04-07, 2023-04-12, 2023-04-13, 2023-04-14, 2023-04-15, 2023-04-16
L22 Thirouin           
L23 Kunovac            2023-01-21, 2023-02-07, 2023-02-10, 2023-02-24, 2023-03-01, 2023-03-20
                       2023-03-29, 2023-04-27, 2023-04-30, 2023-05-29
L24 Moskovitz          2023-01-24, 2023-02-16, 2023-02-20, 2023-03-15
L25 Moskovitz          2023-01-26, 2023-01-27
L26 Moskovitz          2023-01-26
L27 Archer             2023-06-21
M01 Andreoni           2023-06-27
M02 Cenko              2023-04-25, 2023-05-04
M03 Ye                 2023-02-06, 2023-02-15
M04 Holt               2023-01-25
M05 Bauer              2023-02-21, 2023-05-17
M06 Hammerstein        2023-02-12, 2023-03-12, 2023-04-22, 2023-05-14, 2023-06-22
M07 Ye                 2023-01-17, 2023-01-23, 2023-03-16, 2023-03-28, 2023-05-13, 2023-05-22
N01 Strauss            2023-05-25
N02 Trujillo           2023-01-23, 2023-01-25, 2023-05-22, 2023-05-23
N03 Trilling           2023-01-28, 2023-06-10
N04 Thomas             2023-03-13
N05 Tegler             2023-01-18, 2023-01-19
N06 Emery              2023-06-18, 2023-06-29
N07 Emery              2023-01-11, 2023-03-27
N08 Humes              2023-01-14
N09 Oldroyd            2023-02-23, 2023-06-25
T01 Donnelly           2023-02-14, 2023-02-23, 2023-02-24
T02 Rosenwasser        2023-04-14, 2023-05-18
T03 Fodor              2023-02-22, 2023-02-25, 2023-04-18, 2023-04-19, 2023-05-20, 2023-05-21
Y01 Brewer             2023-01-01, 2023-01-04, 2023-01-05, 2023-01-06, 2023-01-08, 2023-01-12
                       2023-01-20, 2023-01-21, 2023-01-23, 2023-01-25, 2023-01-26, 2023-01-29
                       2023-01-30, 2023-01-31, 2023-02-02, 2023-02-03, 2023-02-04, 2023-02-07
                       2023-02-08, 2023-02-09, 2023-02-28, 2023-03-04, 2023-03-05, 2023-03-06
                       2023-03-07, 2023-03-08, 2023-03-09, 2023-03-11, 2023-03-20, 2023-03-30
                       2023-03-31, 2023-04-04, 2023-04-06, 2023-04-07, 2023-04-08, 2023-04-11
                       2023-04-14, 2023-04-15, 2023-04-29, 2023-05-02, 2023-05-03, 2023-05-04
                       2023-05-05, 2023-05-06, 2023-05-07, 2023-05-08, 2023-05-22, 2023-05-23
                       2023-05-24, 2023-05-30, 2023-05-31, 2023-06-01, 2023-06-02, 2023-06-03
                       2023-06-04, 2023-06-05, 2023-06-06, 2023-06-07, 2023-06-08, 2023-06-12
                       2023-06-25
E01 Engineering        2023-01-01, 2023-01-04, 2023-01-05, 2023-01-06, 2023-01-08, 2023-01-11
                       2023-01-13, 2023-01-14, 2023-01-15, 2023-01-16, 2023-01-17, 2023-01-29
                       2023-02-02, 2023-02-03, 2023-02-09, 2023-02-28, 2023-03-03, 2023-03-04
                       2023-03-05, 2023-03-06, 2023-03-07, 2023-03-08, 2023-03-09, 2023-03-12
                       2023-03-30, 2023-03-31, 2023-04-09, 2023-04-10, 2023-04-29, 2023-05-01
                       2023-05-02, 2023-05-03, 2023-05-04, 2023-05-05, 2023-05-06, 2023-05-07
                       2023-05-09, 2023-05-30, 2023-06-01, 2023-06-02, 2023-06-03, 2023-06-04
                       2023-06-05, 2023-06-06, 2023-06-07, 2023-06-10, 2023-06-18, 2023-06-20
                       2023-06-23, 2023-06-26, 2023-06-28, 2023-06-30
E03 Ellsworth-Bowers   2023-01-12, 2023-01-13, 2023-02-01, 2023-02-03, 2023-02-04, 2023-02-05
                       2023-03-30, 2023-04-28, 2023-05-08, 2023-05-26, 2023-05-27, 2023-05-28
                       2023-05-31, 2023-06-08, 2023-06-29


ID  PI Name            Title
B01 Ye                 Linewidth Resolved Spectra of Bright Cometary Comae with EXPRES
B02 Ould Rouis         Discerning merger remnants among field white dwarfs
B03 Schmidt            Resolved Linewidth Emissions at Mercury and Venus
B04 Brainerd           Satellite Galaxies as Tracers of Local Non-Linear Structure
L01 Grundy             Mutual events in the trans-Neptunian belt
L02 van Belle          Measuring Planetary Masses in Multi-Star Systems
L03 van Belle          Bowling for Turkeys: Searching for Triple Systems in Young Disk Wide Binaries
L04 van Belle          Investigation of K-Dwarfs Suspected of Multiplicity
L05 Horch              A Complete Survey for Companions of Nearby Low Mass Stars with QWSSI
L06 West               Mapping diffuse intergalactic light in Abell 1185
L07 Devogele           Second lunation NEO follow-up
L08 Hanley             Constraining the vertical abundances of haze and methane on Titan
L09 Hanley             Salts on Europa's Surface
L10 Ellsworth-Bowers   Young Open Clusters as Tracers of Galactic Environment
L11 Richey-Yowell      Optical Flare Rate and Magnetic Activity Indicator Relationships of K Stars
L12 Richey-Yowell      Determining the Evolution of K Dwarf Chromospheres with Age and Rotation
L13 Llama              Monitoring the Accretion Variability of AB Aur
L14 Llama              Yale Exoplanet Survey
L15 Levine             Occultations of Bodies in the Outer Solar System
L16 Kareta             The Eventually Mission Accessible Centaur Survey (EMACS)
L17 Schleicher         The Complex Rotational State of Comet 103P/Hartley 2 and How it is Changing
L18 Wasserman          Astrometric Measures of Centaurs and Kuiper Belt Object
L19 Thirouin           The fraction of contact binaries in the trans-Neptunian belt
L20 Thirouin           Logos-Zoe: A triple system in the Kuiper belt?
L21 Thirouin           Pushing the Lowell Discovery Telescope to its limit: a search for moon(s) around Mercury
L22 Thirouin           Target of Opportunity for Asteroids Interior to Earth's Orbit
L23 Kunovac            Exploring the origins of sub-Neptune planets by measuring stellar obliquities
L24 Moskovitz          Mission Critical Observations of Asteroid Didymos in Supoort of NASA's DART Experiment
L25 Moskovitz          Rotationally resolved colors of DART target asteroid Didymos
L26 Moskovitz          NEO Rapid Response: Close Encounters of the Asteroid Kind
L27 Archer             DD: Dwarf Galaxy redshift
M01 Andreoni           ToO Observations of Gravitational Wave Counterparts in the Fourth LIGO-Virgo-KAGRA Observing Run
M02 Cenko              Target of Opportunity Transient Follow-Up with LDT
M03 Ye                 ToO for Unanticipated Solar System Phenomena
M04 Holt               Characterizing the coma morphology of long-period comet C/2022 E3 (ZTF)
M05 Bauer              Observations of CO + CO2 Active Comets Observed by NEOWISE - Year 11A
M06 Hammerstein        Classically Scheduled Imaging and Spectroscopy of Transients and Their Host Galaxies
M07 Ye                 Observations of Comets and Asteroids
N01 Strauss            Follow-up lightcurve observations of exotic asteroids from DEEP
N02 Trujillo           Recovery of Extreme trans-Neptunian Objects in search of a Distant Massive Planet
N03 Trilling           Follow-up of interesting asteroids detected in ZTF/SNAPS
N04 Thomas             Mission Critical Observations of Asteroid Didymos in Supoort of NASA's DART Experiment
N05 Tegler             Is the Outer Solar System 'Red Stuff' Destroyed Within 5 AU of the Sun?
N06 Emery              Visible spectra of primitive asteroids
N07 Emery              Colors of small Polana asteroid family members
N08 Humes              Searching for Trojan Analogs in the Main Belt
N09 Oldroyd            Confirmation and Characterization of Unusual Active Bodies
T01 Donnelly           Dust on a Diet: Mapping the Impact of Low Energy Starlight on Dust Emission
T02 Rosenwasser        Spectroscopic survey of polar ring galaxies in the North Ecliptic Pole
T03 Fodor              Early Warning Signs of Quenching
Y01 Brewer             Yale Exoplanet Survey
E01 Engineering        Night Engineering
E03 Ellsworth-Bowers   ENGINEERING: Measuring the Atmospheric Extinction at LDT

New users needing training:
2023-01-02: L02 van Belle: New EXPRES users to be trained by J. Llama.
2023-01-03: L12 Richey-Yowell: T. Richey-Yowell is a new LDT and DeVeny observer.
2023-01-28: N03 Trilling: Trilling is experienced user. MC, DRK, MG are new users.
2023-02-06: L11 Richey-Yowell: T. Richey-Yowell is a new LDT and EXPRES observer.
2023-04-07: L04 van Belle: Lincoln is being trained on QWSSI by van Belle.
2023-04-14: T02 Rosenwasser: B. Rosenwasser is a new LDT observer.
2023-06-21: L27 Archer: New DeVeny user

Latest as of 2023-06-28T20:35:42.151292 UTC