HET Night Report Reader
   Previous Night Report       Dec 23, 2025 Civil        Next Night Report   

Civil Date
Ephemerides
2025-12-23SunsetSunriseMoon
Set12°18°18°12°RiseRiseSet
00:0800:5601:2612:2412:5413:43-03:23
Night Length10:58Sunset Temperature


On-Duty Personnel
Resident AstronomerTelescope Operator
Sergey RostopchinAmy Westfall


Overlapsnone

Other Personnelnone

Guestsnone


Open/Close Log
Open timeOutdoor tempTruss tempClose timeReasonTime open
00:0317.714.612:57twilight12:54
Total Time Open12:54


      
ProgramNight PriorityScience
01:26Science
08:56Idle due to weather (clouds)
11:08Science
Stack Data
StartStopee50ee80Hefi FocusMars FocusOutside TempDome TempTruss TempWind DirectionWind SpeedStack Type
00:3300:580.480.72-20-351916.815.215.020010First of Night
12:5112:570.610.95240-261514.214.114.121112Post-Observing


Problem Reports
PR NumberTimesTime LostDescriptionResponse
661200:59-01:0400:05Velocity/following error faults on UX, LX, Y and all hexapodsCleared all faults and moved on to a new trajectory.
661301:04-01:0700:03Moving to next target failed: TMCS trajectory lost/TMCS failed to acquire trajectoryConfirmed all tracker faults were cleared, then moved on to a new trajectory successfully.
660901:50-01:5000:00HOBs stop displaying LFC cals
661003:52-04:00, 04:11-04:2200:08HOBs hang and did not react on setup complete event
661104:55-04:5500:00HOBs ignoring fake metrology


TO CommentsMostly clear and calm, moments of problematic seeing.


RA Commentsnone


Observations
FileTarget/QIDExp StartExposureOverheadProgramInstrument ConfigurationData TypeIQDimmSkySBrtSkytransSNRCommentsCharge
0001twilight00:05298.2 HPFcal306 Yes
lrs20000001_01skyflat00:127 LRS2cal  Yes
lrs20000002_01skyflat00:1310 LRS2cal  Yes
lrs20000003_01skyflat00:1413 LRS2cal  Yes
lrs20000004_01skyflat00:1616 LRS2cal  Yes
lrs20000005_01skyflat00:1722 LRS2cal  Yes
lrs20000006_01skyflat00:1830 LRS2cal  Yes
virus0000001_01skyflat00:217 VIRUScal  Yes
virus0000002_01skyflat00:2310 VIRUScal  Yes
virus0000003_01skyflat00:2414 VIRUScal  Yes
virus0000004_01skyflat00:2518 VIRUScal  Yes
virus0000005_01skyflat00:2726 VIRUScal  Yes
virus0000006_01flat_ldls_long00:3415 VIRUScal  Yes
virus0000006_02flat_ldls_long00:3515 VIRUScal  Yes
virus0000006_03flat_ldls_long00:3615 VIRUScal  Yes
virus0000007_01Cd-A00:3815 VIRUScal  Yes
virus0000007_02Cd-A00:3915 VIRUScal  Yes
virus0000007_03Cd-A00:4115 VIRUScal  Yes
virus0000008_01Hg00:4215 VIRUScal  Yes
virus0000008_02Hg00:4315 VIRUScal  Yes
virus0000008_03Hg00:4515 VIRUScal  Yes
0002QID 150601:12649.65.2UT26-1-010HPFsci1.430.9120.190.82365 Yes
virus0000009_01parallel01:122083 VIRUSsci  Yes
0003QID 150601:24649.61.2UT26-1-010HPFsci1.290.9320.190.88421 Yes
0004QID 150601:36649.60.2UT26-1-010HPFsci1.220.9220.190.87390 Yes
0005LFC Cal01:48106.5 HPFcal  Yes
virus0000010_01parallel01:521984 VIRUSsci  Yes
0006QID 159201:53617.74.7UT26-1-007HPFsci1.420.9620.290.7160second exp hit end of trackNo
0007QID 159202:04617.70.7UT26-1-007HPFsci1.400.8620.270.6765 No
0008QID 159202:15617.70.7UT26-1-007HPFsci1.380.9420.270.6769 No
0009LFC Cal02:27106.5 HPFcal  Yes
virus0000011_01parallel02:291984 VIRUSsci  Yes
0010QID 159302:30617.74.7UT26-1-007HPFsci1.270.8920.260.8021few minutes short. hit end of trackNo
0011QID 159302:41617.70.7UT26-1-007HPFsci1.270.9320.210.8820 No
0012QID 159302:52617.70.7UT26-1-007HPFsci1.210.9220.190.9510 No
0013LFC Cal03:04106.5 HPFcal  Yes
0014LFC Cal03:09106.5 HPFcal  Yes
virus0000012_01parallel03:092600 VIRUSsci  Yes
lrs20000007_01QID 1603:0926006.7PSU26-1-008LRS2-Rsci1.350.8320.870.83 probem with pointing for unknown reasons yetNo
0015LFC Cal03:11106.5 HPFcal  Yes
0016LFC Cal03:14106.5 HPFcal  Yes
0017LFC Cal04:05106.5 HPFcal  Yes
virus0000013_01parallel04:05400 VIRUSsci  Yes
lrs20000008_01QID 157704:054004.3PSU26-1-012LRS2-Bsci1.451.0421.640.72  Yes
0018LFC Cal04:07106.5 HPFcal  Yes
0019LFC Cal04:09106.5 HPFcal  Yes
0020LFC Cal04:33106.5 HPFcal  Yes
virus0000014_01parallel04:33420 VIRUSsci  Yes
lrs20000009_01QID 106604:3342011.0PSU26-1-016LRS2-Bsci1.501.0721.420.89 quick seeing degradationYes
0021LFC Cal04:35106.5 HPFcal  Yes
0022LFC Cal04:38106.5 HPFcal  Yes
virus0000014_02parallel04:41420 VIRUSsci  Yes
lrs20000009_02QID 106604:414201.0PSU26-1-016LRS2-Bsci1.731.3121.400.88  Yes
0023LFC Cal04:58106.5 HPFcal  Yes
lrs20000010_01parallel04:58360 LRS2sci  Yes
virus0000015_01QID 36004:5836010.0UT26-1-008VIRUSsci1.891.7021.670.68  Yes
0024LFC Cal05:01106.5 HPFcal  Yes
lrs20000010_02parallel05:05360 LRS2sci  Yes
virus0000015_02QID 36005:053601.0UT26-1-008VIRUSsci1.841.2921.630.68  Yes
lrs20000010_03parallel05:12360 LRS2sci  Yes
virus0000015_03QID 36005:123601.0UT26-1-008VIRUSsci1.761.1721.620.65  Yes
lrs20000011_01HD55677_056_E05:23305.5LRS2spec1.780.9921.500.72  Yes
lrs20000012_01HD55677_066_E05:27302.5LRS2spec2.171.0720.860.70  Yes
lrs20000013_01parallel05:33360 LRS2sci  Yes
virus0000016_01QID 36505:333606.0UT26-1-008VIRUSsci1.622.0521.730.72  Yes
0025LFC Cal05:34106.5 HPFcal  Yes
0026LFC Cal05:36106.5 HPFcal  Yes
lrs20000013_02parallel05:40360 LRS2sci  Yes
virus0000016_02QID 36505:413602.0UT26-1-008VIRUSsci1.641.5321.680.79  Yes
lrs20000013_03parallel05:48360 LRS2sci  Yes
virus0000016_03QID 36505:483601.0UT26-1-008VIRUSsci1.691.3421.690.83  Yes
0027LFC Cal05:58106.5 HPFcal  Yes
lrs20000014_01parallel05:58480 LRS2sci  Yes
virus0000017_01QID 155905:584804.0UT26-1-008VIRUSsci1.641.0321.870.79  Yes
0028LFC Cal06:01106.5 HPFcal  Yes
0029LFC Cal06:03106.5 HPFcal  Yes
lrs20000014_02parallel06:08480 LRS2sci  Yes
virus0000017_02QID 155906:084802.0UT26-1-008VIRUSsci1.551.4721.810.88  Yes
lrs20000014_03parallel06:17480 LRS2sci  Yes
virus0000017_03QID 155906:174801.0UT26-1-008VIRUSsci1.410.9421.830.87  Yes
0030LFC Cal06:30106.5 HPFcal  Yes
lrs20000015_01parallel06:30480 LRS2sci  Yes
virus0000018_01QID 39506:304805.0UT26-1-008VIRUSsci1.731.4321.690.87  Yes
0031LFC Cal06:32106.5 HPFcal  Yes
0032LFC Cal06:34106.5 HPFcal  Yes
lrs20000015_02parallel06:39480 LRS2sci  Yes
virus0000018_02QID 39506:394801.0UT26-1-008VIRUSsci1.441.2321.630.80  Yes
lrs20000015_03parallel06:48480 LRS2sci  Yes
virus0000018_03QID 39506:484801.0UT26-1-008VIRUSsci1.451.0821.610.78  Yes
0033LFC Cal07:00106.5 HPFcal  Yes
lrs20000016_01parallel07:00420 LRS2sci  Yes
virus0000019_01QID 123407:004204.0M26-1-004VIRUSsci1.421.0521.680.73  Yes
0034LFC Cal07:03106.5 HPFcal  Yes
0035LFC Cal07:05106.5 HPFcal  Yes
0036LFC Cal07:12106.5 HPFcal  Yes
lrs20000017_01parallel07:12420 LRS2sci  Yes
virus0000020_01QID 123507:124205.0M26-1-004VIRUSsci1.411.2021.670.72  Yes
0037LFC Cal07:14106.5 HPFcal  Yes
0038LFC Cal07:17106.5 HPFcal  Yes
lrs20000018_01parallel07:22420 LRS2sci  Yes
virus0000021_01QID 123607:224203.0M26-1-004VIRUSsci1.220.8321.610.68  Yes
0039LFC Cal07:23106.5 HPFcal  Yes
0040LFC Cal07:25106.5 HPFcal  Yes
0041LFC Cal07:27106.5 HPFcal  Yes
0042LFC Cal07:33106.5 HPFcal  Yes
lrs20000019_01parallel07:33420 LRS2sci  Yes
virus0000022_01QID 123707:334204.0M26-1-004VIRUSsci1.360.9921.520.83  Yes
0043LFC Cal07:35106.5 HPFcal  Yes
0044LFC Cal07:38106.5 HPFcal  Yes
0045LFC Cal07:45106.5 HPFcal  Yes
lrs20000020_01parallel07:45480 LRS2sci  Yes
virus0000023_01QID 35507:454805.0UT26-1-008VIRUSsci1.811.0521.740.66  Yes
0046LFC Cal07:48106.5 HPFcal  Yes
0047LFC Cal07:50106.5 HPFcal  Yes
lrs20000020_02parallel07:54480 LRS2sci  Yes
virus0000023_02QID 35507:544801.0UT26-1-008VIRUSsci1.691.0821.670.79  Yes
lrs20000020_03parallel08:04480 LRS2sci  Yes
virus0000023_03QID 35508:044802.0UT26-1-008VIRUSsci1.501.1421.710.87  Yes
0048LFC Cal08:15106.5 HPFcal  Yes
lrs20000021_01parallel08:15480 LRS2sci  Yes
virus0000024_01QID 35808:154803.0UT26-1-008VIRUSsci1.460.9021.711.07  Yes
0049LFC Cal08:17106.5 HPFcal  Yes
0050LFC Cal08:20106.5 HPFcal  Yes
lrs20000021_02parallel08:24480 LRS2sci  Yes
virus0000024_02QID 35808:244801.0UT26-1-008VIRUSsci1.341.0721.681.14  Yes
lrs20000021_03parallel08:33480 LRS2sci  Yes
virus0000024_03QID 35808:334801.0UT26-1-008VIRUSsci1.430.9421.591.27  Yes
0051LFC Cal08:48106.5 HPFcal  Yes
virus0000025_01parallel08:48450 VIRUSsci  Yes
lrs20000022_01QID 46508:484507.5PSU26-1-014LRS2-Bsci1.531.0821.620.76  P4
0052LFC Cal08:51106.5 HPFcal  Yes
0053LFC Cal08:53106.5 HPFcal  Yes
lrs20000023_01parallel09:01600 LRS2sci  Yes
virus0000026_01QID 47909:016005.0UT26-1-018VIRUSsci1.641.2321.830.67 clouds. abortedNo
0054LFC Cal09:02106.5 HPFcal  Yes
0055LFC Cal09:04106.5 HPFcal  Yes
0056LFC Cal09:06106.5 HPFcal  Yes
lrs20000023_02parallel09:13600 LRS2sci  Yes
virus0000026_02QID 47909:136002.0UT26-1-018VIRUSsci1.521.2421.660.21  No
virus0000027_01dark10:19360 ENG26-1-004VIRUScal  Yes
virus0000027_02dark10:26360 ENG26-1-004VIRUScal  Yes
virus0000027_03dark10:33360 ENG26-1-004VIRUScal  Yes
virus0000027_04dark10:40360 ENG26-1-004VIRUScal  Yes
virus0000027_05dark10:47360 ENG26-1-004VIRUScal  Yes
virus0000027_06dark10:54360 ENG26-1-004VIRUScal  Yes
virus0000027_07dark11:01360 ENG26-1-004VIRUScal  Yes
virus0000027_08dark11:07360 ENG26-1-004VIRUScal  Yes
0057HR3163_tell_std11:14117.26.0HPFtelluric2.131.4620.140.97  Yes
0058QID 176611:22841.46.0UT26-1-014HPFsci1.902.2920.200.82439 Yes
virus0000028_01parallel11:22891 VIRUSsci  Yes
0059LFC Cal11:38106.5 HPFcal  Yes
virus0000029_01parallel11:42300 VIRUSsci  Yes
lrs20000024_01QID 4411:423006.0PSU26-1-003LRS2-Rsci1.951.4821.021.08  P4
0060LFC Cal11:43106.5 HPFcal  Yes
0061LFC Cal11:45106.5 HPFcal  Yes
lrs20000025_01parallel11:53600 LRS2sci  Yes
virus0000030_01QID 50111:536006.0UT26-1-018VIRUSsci2.0021.810.73  Yes
0062LFC Cal11:54106.5 HPFcal  Yes
0063LFC Cal11:56106.5 HPFcal  Yes
0064LFC Cal11:58106.5 HPFcal  Yes
lrs20000025_02parallel12:05600 LRS2sci  Yes
virus0000030_02QID 50112:056002.0UT26-1-018VIRUSsci1.9721.800.83  Yes
lrs20000025_03parallel12:16600 LRS2sci  Yes
virus0000030_03QID 50112:166001.0UT26-1-018VIRUSsci1.7921.780.81  Yes
0065QID 33112:33308.96.9UT26-1-007HPFsci1.8420.520.64206 P4
virus0000031_01parallel12:331060 VIRUSsci  Yes
0066QID 33112:39308.90.9UT26-1-007HPFsci1.8120.100.66194 P4
0067QID 33112:45308.90.9UT26-1-007HPFsci1.7819.500.67185 P4
lrs20000026_01bias12:510 LRS2cal  Yes
virus0000032_01bias12:520 VIRUScal  Yes
virus0000033_01Cd-A12:5615 ENG26-1-002VIRUScal  Yes
virus0000034_01Hg12:5715 ENG26-1-002VIRUScal  Yes
0068Dark13:05319.5 HPFcal  Yes
0069Quartz FCU13:1774.5 HPFcal  Yes
0070Quartz FCU13:1974.5 HPFcal  Yes
0071Quartz FCU13:2074.5 HPFcal  Yes
0072Quartz FCU13:2274.5 HPFcal  Yes
0073Quartz FCU13:2474.5 HPFcal  Yes
0074Quartz FCU13:2674.5 HPFcal  Yes
0075Quartz FCU13:2774.5 HPFcal  Yes
0076Alpha Bright Cal13:3085.2 HPFcal  Yes
0077Alpha Bright Cal13:3285.2 HPFcal  Yes
0078Alpha Bright Cal13:3485.2 HPFcal  Yes
0079Alpha Bright Cal13:3685.2 HPFcal  Yes
0080LFC FCU13:38106.5 HPFcal  Yes
0081LFC FCU13:41106.5 HPFcal  Yes
0082LFC FCU13:43106.5 HPFcal  Yes
0083LFC FCU13:45106.5 HPFcal  Yes
0084LFC FCU13:47106.5 HPFcal  Yes
0085LFC FCU13:50106.5 HPFcal  Yes
0086LFC Cal13:53106.5 HPFcal  Yes
0087LFC Cal13:55106.5 HPFcal  Yes
0088Etalon Cal14:03159.8 HPFcal  Yes
0089Etalon Cal14:06159.8 HPFcal  Yes
0090Etalon Cal14:09159.8 HPFcal  Yes
0091Etalon Cal14:12159.8 HPFcal  Yes
0092UNe Slave Cal14:16426 HPFcal  Yes
0093UNe Slave Cal14:24426 HPFcal  Yes
0094UNe Slave Cal14:31426 HPFcal  Yes
0095UNe Slave Cal14:39426 HPFcal  Yes
0096UNe Slave Cal14:47426 HPFcal  Yes
0097UNe Slave Cal14:55426 HPFcal  Yes
0088LFC Cal21:58106.5 HPFcal  Yes
lrs20009900_01bias22:060 LRS2cal  Yes
virus0009900_01flat_Qth22:0720 VIRUScal  Yes
virus0009901_01bias22:090 VIRUScal  Yes
lrs20009901_01flat_ldls_long_B22:0920 LRS2cal  Yes
virus0009902_01dark22:1115 VIRUScal  Yes
lrs20009902_01Cd-A_B22:1229 LRS2cal  Yes
lrs20009903_01FeAr_R22:1315 LRS2cal  Yes
lrs20009904_01Hg_B22:1415 LRS2cal  Yes
0089Dark22:18319.5 HPFcal  Yes
0090Quartz FCU22:2474.5 HPFcal  Yes
0091Quartz FCU22:2674.5 HPFcal  Yes
0092Quartz FCU22:2874.5 HPFcal  Yes
0093Quartz FCU22:3074.5 HPFcal  Yes
0094Quartz FCU22:3274.5 HPFcal  Yes
0095Quartz FCU22:3374.5 HPFcal  Yes
0096Quartz FCU22:3574.5 HPFcal  Yes
0097Alpha Bright Cal22:3785.2 HPFcal  Yes
0098Alpha Bright Cal22:3985.2 HPFcal  Yes
0099Alpha Bright Cal22:4185.2 HPFcal  Yes
0100Alpha Bright Cal22:4385.2 HPFcal  Yes
0101LFC FCU22:46106.5 HPFcal  Yes
0102LFC FCU22:48106.5 HPFcal  Yes
0103LFC Cal22:51106.5 HPFcal  Yes
0104LFC Cal22:53106.5 HPFcal  Yes
0105Etalon Cal22:56159.8 HPFcal  Yes
0106UNe Slave Cal23:00426 HPFcal  Yes
lrs20000028_01flat_Qth_R23:0115 LRS2cal  Yes
lrs20000028_02flat_Qth_R23:0215 LRS2cal  Yes
lrs20000028_03flat_Qth_R23:0415 LRS2cal  Yes
lrs20000028_04flat_Qth_R23:0515 LRS2cal  Yes
lrs20000028_05flat_Qth_R23:0615 LRS2cal  Yes
lrs20000029_01flat_ldls_long_B23:0720 LRS2cal  Yes
0107UNe Slave Cal23:08426 HPFcal  Yes
lrs20000029_02flat_ldls_long_B23:0920 LRS2cal  Yes
lrs20000029_03flat_ldls_long_B23:1020 LRS2cal  Yes
lrs20000030_01Cd-A_B23:1129 LRS2cal  Yes
lrs20000030_02Cd-A_B23:1329 LRS2cal  Yes
lrs20000030_03Cd-A_B23:1429 LRS2cal  Yes
0108UNe Slave Cal23:15426 HPFcal  Yes
lrs20000031_01FeAr_R23:1615 LRS2cal  Yes
lrs20000031_02FeAr_R23:1715 LRS2cal  Yes
lrs20000031_03FeAr_R23:1815 LRS2cal  Yes
lrs20000032_01Hg_R23:1920 LRS2cal  Yes
lrs20000032_02Hg_R23:2120 LRS2cal  Yes
lrs20000032_03Hg_R23:2220 LRS2cal  Yes
0109UNe Slave Cal23:23426 HPFcal  Yes
lrs20000033_01Hg_B23:2315 LRS2cal  Yes
lrs20000033_02Hg_B23:2415 LRS2cal  Yes
lrs20000033_03Hg_B23:2615 LRS2cal  Yes
lrs20000034_01bias23:270 LRS2cal  Yes
virus0000038_01bias23:270 VIRUScal  Yes
lrs20000034_02bias23:280 LRS2cal  Yes
virus0000038_02bias23:280 VIRUScal  Yes
lrs20000034_03bias23:290 LRS2cal  Yes
virus0000038_03bias23:290 VIRUScal  Yes
lrs20000034_04bias23:300 LRS2cal  Yes
virus0000038_04bias23:300 VIRUScal  Yes
lrs20000034_05bias23:300 LRS2cal  Yes
0110UNe Slave Cal23:31426 HPFcal  Yes
virus0000038_05bias23:310 VIRUScal  Yes
lrs20000034_06bias23:310 LRS2cal  Yes
virus0000038_06bias23:320 VIRUScal  Yes
lrs20000034_07bias23:320 LRS2cal  Yes
virus0000038_07bias23:330 VIRUScal  Yes
lrs20000034_08bias23:330 LRS2cal  Yes
virus0000038_08bias23:330 VIRUScal  Yes
lrs20000034_09bias23:340 LRS2cal  Yes
virus0000038_09bias23:340 VIRUScal  Yes
lrs20000034_10bias23:350 LRS2cal  Yes
virus0000038_10bias23:350 VIRUScal  Yes
lrs20000034_11bias23:360 LRS2cal  Yes
virus0000038_11bias23:360 VIRUScal  Yes
lrs20000035_01dark23:37360 LRS2cal  Yes
virus0000039_01dark23:37360 VIRUScal  Yes
0111UNe Slave Cal23:39426 HPFcal  Yes
lrs20000035_02dark23:44360 LRS2cal  Yes
virus0000039_02dark23:44360 VIRUScal  Yes
lrs20000035_03dark23:50360 LRS2cal  Yes
virus0000039_03dark23:51360 VIRUScal  Yes