Subject: 2.5m obslog 20250924 (SJD 60943) From: doravetz@apo.nmsu.edu Date: Thu, 25 Sep 2025 11:04:34 +0000 (UTC) APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Wednesday September 24, 2025 (SJD 60943) ---- Observing Team ---- Dan Oravetz ---- Observing Plan ---- Wed 24 Sep 2025 60943 dark (9.7 h) plus 0.4 h for 12 deg design ---- Observing Summary ---- Opened at sunset and began observing the first field of the night when the humidity increased to >90%. I was able to finish that first design, but then closed. The dewpoint depression remained well below the closure limit the remainder of the night and the presence of dew on exterior surfaces was confirmed by periodic "touch tests" (the 3.5m dewpoint sensor was apparently frozen, so its output was incorrect). Time Field-Design-Conf DesignType BOSS/APOGEE Seeing Overhead Complete? Comment 01:23:52 100454-752241-21458 bright_time 1x730/1xAB 2.1" 0:00 Notes ===== 180L LN2 dewar weight @ 96 lbs. ---- Observing Log ---- ============================================================================ AFTERNOON CHECKOUT ============================================================================ All systems alive and responsive. Issued a 'boss ackErrors' to clear the "stickied" ionPump alerts. Disk space: Filesystem Size Used Avail Use% Mounted on /dev/sdb1 2.0T 465G 1.6T 23% /home /dev/sdd1 22T 12T 9.2T 57% /data FPS powered on. Positioners are home/folded: 21:47:05 APO.doravetz 49 jaeger i folded=T 21:47:05 APO.doravetz 49 jaeger : text="All positioners are folded." Loaded a manual folded configuration: 21:47:36 CmdStarted: APO.doravetz 50 jaeger configuration load --from-positions 21:47:38 APO.doravetz 50 jaeger d text="Resetting cherno offsets." 21:47:38 APO.doravetz 50 jaeger d text="Focal plane scale: 1.0." 21:47:38 APO.doravetz 50 jaeger d configuration_loaded=21457,-999,-999,-999.0,-999.0,0,-999.0,-999.0,/home/sdss5/software/sdsscore/main/apo/summary_files/021XXX/0214XX/confSummary-21457.par,F 21:47:43 APO.doravetz 50 jaeger i configuration_snapshot=/data/logs/jaeger/configuration_snapshots/60943/configuration_snapshot_60943_21457.pdf 21:47:43 APO.doravetz 50 jaeger d design_preloaded=-999 21:47:43 APO.doravetz 50 jaeger : text="Configuration 21457 loaded." 21:47:43 CmdDone: APO.doravetz 50 jaeger configuration load --from-positions Took a '--no-apply' FVC image: 21:48:55 FVC Loop fvc_rms= 35.75 fvc_deltarms= None fvc_filename=/data/fcam/60943/fimg-fvc1n-0001.fits fvc_perc_90= 45.90 fvc_percent_reached= 1.00 fvc iterations= 1 Scattered-light check: 21:49:15 CmdStarted: APO.doravetz 52 fliswarm talk -n fvc expose 50 No evidence of light artifacts. Exercised positioners: 21:50:38 CmdStarted: APO.doravetz 54 jaeger configuration random --danger 21:52:01 APO.doravetz 54 jaeger d trajectory_dump_file=/data/logs/jaeger/trajectories/60942/trajectory-60942-0010.json 21:52:02 CmdDone: APO.doravetz 54 jaeger configuration random --danger 21:52:06 .jaeger 0 jaeger i snapshot=/data/logs/jaeger/snapshots/60942/fps_snapshot_60942_0010.pdf 21:52:56 CmdStarted: APO.doravetz 55 jaeger configuration reverse GFA biases/darks: 21:54:19 CmdStarted: APO.doravetz 56 fliswarm talk -c gfa expose --bias --count 10 21:55:26 CmdStarted: APO.doravetz 57 fliswarm talk -c gfa expose --dark --count 5 5 BOSS arc and flat: 22:01:24 BOSS expNum=387674, expTime= 4.0s 22:02:52 BOSS expNum=387675, expTime= 25.0s 00:01Z - Started ventilation. ============================================================================ NIGHT ============================================================================ 00:58:23 encl25m : open. Clear (just a few small clouds around the periphery). Force-filled BOSS LN2 dewars. APOGEE dome flats: 01:02:10 apogee.expose=apRaw-53810011, 5, B, DomeFlat 01:03:26 apogee.expose=apRaw-53810012, 5, B, DomeFlat 01:04:42 apogee.expose=apRaw-53810013, 5, B, DomeFlat MJD DomeFlat MTPs:1 2 3 4 5 6 7 8 9 10 AZ ALT ROT 60943 53810011 1.01 1.02 1.02 1.02 1.04 1.01 0.97 0.99 0.99 0.94 121.0 30.0 -0.0 60943 53810012 1.02 1.01 1.01 1.01 1.02 1.01 0.97 0.99 0.99 0.94 121.0 30.0 -0.0 60943 53810013 1.03 1.02 1.01 1.01 1.03 1.01 0.97 0.99 0.99 0.94 121.0 30.0 -0.0 BOSS hartmanns: 01:08:13 boss exposure 4.0, file=387678 01:08:53 boss exposure 4.0, file=387679 01:09:39 sp1.motor.move= 24, 25, 24 01:09:39 Hartmann collimate output sp1: offset: r= -659 (In Focus); b= -2.2 (In Focus) sp1: pred. move: spAverageMove= 24 sp1: pred. resid: r= -683, b= -2.1, txt= OK, spTemp = 8.0 BOSS flats: 01:10:12Z boss exposure flat itime=25, file=387680 01:11:59Z boss exposure flat itime=25, file=387681 01:13:46Z boss exposure flat itime=25, file=387682 The first 'preload' command seemed to hang again. It had taken many minutes more than usual and then I issued a 'jaeger configuration preload --stop', but after issuing that then it seemed like the 'preload' did what it was supposed to do: 1:22:09 CmdStarted: APO.doravetz 4 jaeger configuration preload --stop 01:22:09 APO.doravetz 4 jaeger > 01:22:09 APO.doravetz 4 jaeger f error="Cannot find running command jaeger-command-parser_configuration_preload." 01:22:09 CmdDone: APO.doravetz 4 jaeger configuration preload --stop 01:22:10 .jaeger 18 jaeger i text="Preloading design 752241." 01:22:10 .jaeger 18 jaeger d text="Getting guider scale." 01:22:10 .jaeger 18 jaeger w text="Invalid guider scale." 01:22:10 .jaeger 18 jaeger d text="Using focal scale factor derived from ambient temperature (13.19 C): 0.999893" 01:22:10 .jaeger 18 jaeger d text="Correcting guider scale 0.999893 with fudge factor 1.000000." 01:22:10 .jaeger 18 jaeger i text="Focal scale: 0.999893." 01:22:10 .jaeger 18 jaeger d text="Epoch delay: 450.0 seconds." 01:22:10 .jaeger 18 jaeger d text="Effective epoch: 2460943.562270." 01:22:30 .jaeger 18 jaeger i text="Calculating trajectories." I restarted boson so the 'preload' icon would get un-stuck from the preloading status. **************************************************************** 01:23:52 Field-Design-Configuration: 100454-752241-21458 **************************************************************** 01:24:03 hal auto-pilot: auto_pilot, prepare, load, goto_field, expose, cleanup 01:24:03 hal auto-pilot: auto_pilot, prepare, load, goto_field, expose, cleanup 01:24:05 hal goto-field: slew, reconfigure, fvc, reslew, arc, acquire, guide 01:24:06 CmdStarted: jaeger configuration execute 01:24:11 CmdStarted: tcc track (slew begins) 01:24:15 HgCd lamps turned ON 01:25:04 CmdDone: jaeger configuration execute 01:26:21 CmdDone: Slew finished ('tcc track' command finished) 01:26:22 CmdStarted: FVC loop 01:27:22 CmdDone: FVC loop FVC loop results: fvc_rms= 12.88 fvc_deltarms= 18.47 fvc_filename=/data/fcam/60943/fimg-fvc1n-0004.fits fvc_perc_90= 9.80 fvc_percent_reached= 54.60 fvc iterations= 2 01:27:23 CmdStarted: tcc track (slew begins) 01:27:23 Ne lamps turned ON 01:27:31 CmdDone: Slew finished ('tcc track' command finished) 01:28:09 BOSS expNum=387683, expTime= 4.0s 01:28:17 HgCd lamps turned OFF 01:28:17 Ne lamps turned OFF 01:28:27 CmdStarted: cherno acquire 01:30:12 CmdDone: cherno acquire 01:30:13 CmdStarted: 'cherno guide' 01:30:14 hal expose: BOSS science, APOGEE science 01:30:43 BOSS expNum=387684, expTime= 730.0s 01:30:45 APOGEE expNum=53810014, reads=35, dithPos=A, Object 01:37:01 APOGEE expNum=53810015, reads=35, dithPos=B, Object The humidity spiked (90% RH) about midway through this exposure sequence. Going to finish this exposure and then I have to close. APOGEE dome flats: 01:44:29 APOGEE expNum=53810016, reads=5, dithPos=B, DomeFlat 01:45:45 APOGEE expNum=53810017, reads=5, dithPos=B, DomeFlat 01:47:00 APOGEE expNum=53810018, reads=5, dithPos=B, DomeFlat MJD DomeFlat MTPs:1 2 3 4 5 6 7 8 9 10 AZ ALT ROT 60943 53810016 1.01 1.01 1.01 1.00 1.03 1.01 0.97 0.99 1.00 0.95 121.0 30.0 0.0 60943 53810017 1.01 1.01 1.00 1.00 1.02 1.01 0.97 0.99 0.99 0.95 121.0 30.0 0.0 60943 53810018 1.01 1.00 1.00 1.01 1.02 1.01 0.97 0.99 0.99 0.95 121.0 30.0 0.0 BOSS flat and arc: 01:48:14 BOSS expNum=387685, expTime= 25.0s 01:50:10 BOSS expNum=387686, expTime= 4.0s 01:53:25 2.5m Enclosure: CLOSED. Definitely humid outside. 03:35Z - Went outside to check the surfaces and there is dew on exterior surfaces. 05:25Z - Still dewy. The 3.5m humidity info is not trustworthy. Appears dewpoint sensor is frozen. 08:45Z - Another touch test confirms high humidty (without 3.5m reporting correctly, I prefer the sanity check of actually looking at the exterior surfaces and checked for dew.) 11:00Z - Called it a night. The Clear Sky Clock predicted the high humidity for these later hours of the night leading up to morning, but didn't expect the humidity to plague us so much so earlier on. 11:03Z - FPS powered-off. Positioners are home/folded. APOGEE morning cals started. ---- Mirror Numbers ---- PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A: 0.1030 0.1030 Axial B: 0.0018 0.0018 Axial C: -0.1750 -0.1760 Trans D: -0.0310 -0.0300 Lateral E: 0.3395 0.3395 Lateral F: 0.5445 0.5435 GALILS Commanded: 8450 -1050 8800 22100 -2000 -1700 Actual: 8450 -1050 8800 22100 -2000 -1700 SETMIR VALUES PrimDesOrient: 1.06 2.03 16.67 -410.97 -787.67 PrimOrient: 1.06 2.03 16.67 -410.97 -787.67 SECONDARY: ---------- Focus: 0.0000 Air temp: 0.00 Altitude: 30.0 MIGS TONIGHT NOMINAL Axial A: -7.6400 -7.6430 Axial B: -7.5340 -7.5350 Axial C: -7.5320 -7.5330 Trans D: 0.1770 0.1810 GALILS Commanded: 2246000 2244200 2242500 -1750 -1750 Actual: 2215666 2225518 2199628 -1750 -1750 SETMIR VALUES SecDesOrient: 1757.0 7.9 1.5 -39.3 35.42 SecOrient: 1757.04 7.85 1.53 -38.7 35.8 ---- Focus Log ---- Time Field-Design AZ ALT ROT Focus rms ArcOffX OffY Seeing errRA[prc10,prc90] errDec[prc10,prc90] 01:30 100454-752241 27.22 72.28 233.02 0 0.222 -22 -11 1.51 -0.011[-0.177, 0.318] 0.013[-0.242, 0.162] ---- Telescope Status ---- Status at close: Telescope stowed at: 121.0, 30.0, 0.0 mount Instrument mounted: FPS Counterweights at: manually set for FPS balancing LN2 autofill systems: Connected and turned on 180L LN2 dewar scales: SP1 96 lbs, 18.5 psi FPS Status ========== CP10 Loop = 7.55 L/min GFA Loop = 2.42 L/min Supply pressure = 44.2 psi Return pressure = 29.1 psi Chiller Status ============== Set temperarature = 10.9 C Flow = 5.0 Gpm ---- Software Used ---- STUI : 1.7.21 alerts : 2.3.0 boss : 6.0.3 -boss.specMec : 3.0.4 apo : 4.1.0 fliswarm : 0.5.1a0 jaeger : 1.10.3a1 kaiju : 1.4.1 coordio : 1.17.1a0 fps_calibrati : 2025.02.24+c2f4714 cherno : 1.1.0 astrometrynet : 0.93 hal : 1.4.1 hartmann : 2.0.2 hub : 5.0.1a0 mcp : 2.2 -mcp.plc : 35 -mcp.azFiduci : v1_151 -mcp.altFiduc : v1_151 -mcp.rotFiduc : v1_151 tcc : 1.4.0 apogee : not available apogeecal : not available apogeeql : v1_7_0dev STUIAdditions : 3.1.18 boson : 0.5.1 sdss-obstools : 3.9.3 TPM : 1.2-31-gd7eb MCP : 2.2 idlspec2d : v6_2_1 Kronos : 2.1.0a roboscheduler : 2.1.0 ---- APOGEE Data Summary ---- 60942 morning cals: num field design config exptype dithpix nread relflux okay dx dy sigx sigy fpi1 fpi2 -------- ------ ------ ------ ------------ ------- ----- ------- ----- ------- ------- ------ ------ ---- ---- 53800025 104601 756745 21455 DARK 13.0 60 5 True -- -- -- -- -- -- 53800026 104601 756745 21455 DARK 13.0 60 10 True -- -- -- -- -- -- 53800027 104601 756745 21455 DARK 13.0 60 13 True -- -- -- -- -- -- 53800028 104601 756745 21455 QUARTZFLAT 13.0 10 100 True -- 0.63 -- 0.86 -- -- 53800029 104601 756745 21455 QUARTZFLAT 13.0 10 100 True -- 0.65 -- 0.85 -- -- 53800030 104601 756745 21455 QUARTZFLAT 13.0 10 100 True -- 0.66 -- 0.84 -- -- 53800031 104601 756745 21455 ARCLAMP-THAR 13.5 12 94 True 22.30 1.19 1.03 0.90 -- -- 53800032 104601 756745 21455 ARCLAMP-UNE 13.5 40 111 True 22.05 0.94 1.09 0.90 -- -- 53800033 104601 756745 21455 ARCLAMP-THAR 13.0 12 98 True 21.81 1.13 1.04 0.94 -- -- 53800034 104601 756745 21455 ARCLAMP-UNE 13.0 40 136 True 21.57 -5.32 1.04 0.94 -- -- 53800035 104601 756745 21455 DARK 13.0 30 3 False -- -- -- -- -- -- 53800036 104601 756745 21455 INTERNALFLAT 13.0 30 100 True -- -- -- -- -- -- 53800037 104601 756745 21455 INTERNALFLAT 13.0 30 101 True -- -- -- -- -- -- 53800038 104601 756745 21455 INTERNALFLAT 13.0 30 101 True -- -- -- -- -- -- 53800039 104601 756745 21455 DARK 13.0 30 250 True -- -- -- -- -- -- 53800040 104601 756745 21455 FPI 13.0 30 246 True -15.90 -5.22 1.09 0.89 -- -- 53800041 104601 756745 21455 FPI 13.5 30 249 True -3.03 -5.19 1.14 0.90 -- -- num exptype nread mtp1 mtp2 mtp3 mtp4 mtp5 mtp6 mtp7 mtp8 mtp9 mtp10 -------- ---------- ----- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----- 53800028 QUARTZFLAT 10 67 73 81 90 89 86 88 89 89 82 53800029 QUARTZFLAT 10 70 75 82 91 90 87 88 89 89 83 53800030 QUARTZFLAT 10 71 76 82 92 90 87 89 90 90 84 (observers39) [observer@sdss5-hub: ~]$ check_ap 60943 Using nfowler=1 for DOMEFLAT Using nfowler=1 for DOMEFLAT Using nfowler=1 for DOMEFLAT Using nfowler=1 for DOMEFLAT Using nfowler=1 for DOMEFLAT Using nfowler=1 for DOMEFLAT num field design config exptype dithpix nread relflux okay dx dy sigx sigy fpi1 fpi2 -------- ------ ------ ------ ------------ ------- ----- ------- ---- ------- ------- ------ ------ ---- ---- 53810001 104601 756743 21456 DARK 13.5 3 100 True -- -- -- -- -- -- 53810002 -999 -999 21457 DARK 13.5 60 -20 True -- -- -- -- -- -- 53810003 -999 -999 21457 QUARTZFLAT 13.5 10 98 True -- 0.54 -- 0.87 -- -- 53810004 -999 -999 21457 ARCLAMP-THAR 13.5 12 101 True 22.33 1.15 1.05 0.92 -- -- 53810005 -999 -999 21457 ARCLAMP-UNE 13.5 40 138 True 22.12 -5.35 1.04 0.96 -- -- 53810006 -999 -999 21457 ARCLAMP-THAR 13.0 12 106 True 21.83 1.07 1.05 0.95 -- -- 53810007 -999 -999 21457 ARCLAMP-UNE 13.0 40 130 True 21.59 -5.37 1.02 0.94 -- -- 53810008 -999 -999 21457 DARK 13.0 60 -7 True -- -- -- -- -- -- 53810009 -999 -999 21457 FPI 13.0 30 244 True 8.81 -5.26 1.11 0.88 -- -- 53810010 -999 -999 21457 FPI 13.5 30 242 True 9.32 -5.31 1.09 0.86 -- -- 53810011 -999 -999 21457 DOMEFLAT 13.5 5 106 True -- 0.56 -- 0.86 -- -- 53810012 -999 -999 21457 DOMEFLAT 13.5 5 98 True -- 0.57 -- 0.85 -- -- 53810013 -999 -999 21457 DOMEFLAT 13.5 5 101 True -- 0.56 -- 0.86 -- -- 53810014 100454 752241 21458 OBJECT 13.0 35 43 True 21.78 0.39 1.72 0.90 157 169 53810015 100454 752241 21458 OBJECT 13.5 35 45 True 22.26 0.39 1.67 0.89 154 167 53810016 100454 752241 21458 DOMEFLAT 13.5 5 88 True -- 0.59 -- 0.85 -- -- 53810017 100454 752241 21458 DOMEFLAT 13.5 5 93 True -- 0.55 -- 0.85 -- -- 53810018 100454 752241 21458 DOMEFLAT 13.5 5 89 True -- 0.57 -- 0.86 -- -- num exptype nread mtp1 mtp2 mtp3 mtp4 mtp5 mtp6 mtp7 mtp8 mtp9 mtp10 -------- ---------- ----- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----- 53810003 QUARTZFLAT 10 67 72 81 91 90 87 89 90 90 83 53810011 DOMEFLAT 5 82 90 98 105 115 102 107 110 106 99 53810012 DOMEFLAT 5 77 85 91 98 106 96 100 103 99 93 53810013 DOMEFLAT 5 78 88 93 100 109 97 102 104 101 95 53810016 DOMEFLAT 5 67 76 83 89 97 87 91 94 91 85 53810017 DOMEFLAT 5 73 82 87 95 104 93 97 100 96 90 53810018 DOMEFLAT 5 70 78 83 90 98 88 92 94 91 86 ---- BOSS Data Summary ---- Reading FITS from /data/spectro//60943 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - n Time Filename design-field cfg flav shu Exp colA colB colC Hrt - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 21:45 r1-00387669 ----------- ---- bia Clo 0.0 26097 31076 28582 2 21:45 b1-00387669 ----------- ---- bia Clo 0.0 26097 31076 28582 3 21:57 r1-00387670 -999--999 21457 arc Lef 4.1 26097 31076 28582 HART 4 21:57 b1-00387670 -999--999 21457 arc Lef 4.1 26097 31076 28582 HART 5 21:58 r1-00387671 -999--999 21457 arc Rig 4.1 26097 31076 28582 HART 6 21:58 b1-00387671 -999--999 21457 arc Rig 4.1 26097 31076 28582 HART 7 21:59 b1-00387672 -999--999 21457 arc Lef 4.1 22053 27031 24540 HART 8 21:59 r1-00387672 -999--999 21457 arc Lef 4.1 22053 27031 24540 HART 9 22:00 r1-00387673 -999--999 21457 arc Rig 4.1 22053 27031 24540 HART 10 22:00 b1-00387673 -999--999 21457 arc Rig 4.1 22053 27031 24540 HART 11 22:01 b1-00387674 -999--999 21457 arc Out 4.1 21592 26572 24077 12 22:01 r1-00387674 -999--999 21457 arc Out 4.1 21592 26572 24077 13 22:02 r1-00387675 -999--999 21457 fla Out 25.1 21592 26572 24077 14 22:02 b1-00387675 -999--999 21457 fla Out 25.1 21592 26572 24077 15 01:06 b1-00387676 -999--999 21457 arc Lef 4.1 21592 26572 24077 HART 16 01:06 r1-00387676 -999--999 21457 arc Lef 4.1 21592 26572 24077 HART 17 01:06 r1-00387677 -999--999 21457 arc Rig 4.1 21592 26572 24077 HART 18 01:06 b1-00387677 -999--999 21457 arc Rig 4.1 21592 26572 24077 HART 19 01:08 b1-00387678 -999--999 21457 arc Lef 4.1 23730 28709 26215 HART 20 01:08 r1-00387678 -999--999 21457 arc Lef 4.1 23730 28709 26215 HART 21 01:08 r1-00387679 -999--999 21457 arc Rig 4.1 23730 28709 26215 HART 22 01:08 b1-00387679 -999--999 21457 arc Rig 4.1 23730 28709 26215 HART 23 01:10 b1-00387680 -999--999 21457 fla Out 25.1 23754 28734 26239 24 01:10 r1-00387680 -999--999 21457 fla Out 25.1 23754 28734 26239 25 01:12 r1-00387681 -999--999 21457 fla Out 25.1 23754 28734 26239 26 01:12 b1-00387681 -999--999 21457 fla Out 25.1 23754 28734 26239 27 01:14 r1-00387682 -999--999 21457 fla Out 25.1 23754 28734 26239 28 01:14 b1-00387682 -999--999 21457 fla Out 25.1 23754 28734 26239 29 01:28 r1-00387683 752241-100454 21458 arc Out 4.1 23754 28734 26239 30 01:28 b1-00387683 752241-100454 21458 arc Out 4.1 23754 28734 26239 31 01:30 b1-00387684 752241-100454 21458 sci Out 730.1 23754 28734 26239 32 01:30 r1-00387684 752241-100454 21458 sci Out 730.1 23754 28734 26239 33 01:48 r1-00387685 752241-100454 21458 fla Out 25.1 23754 28734 26239 34 01:48 b1-00387685 752241-100454 21458 fla Out 25.1 23754 28734 26239 35 01:50 b1-00387686 752241-100454 21458 arc Out 4.1 23754 28734 26239 36 01:50 r1-00387686 752241-100454 21458 arc Out 4.1 23754 28734 26239 ---- BOSS Spectrographs Collimation ---- Afternoon focus check ===================== 21:59:32 BOSS expNum=387672, expTime= 4.0s 22:00:13 BOSS expNum=387673, expTime= 4.0s 22:00:54 sp1.motor.move= -461, -459, -463 22:00:54 Hartmann collimate output sp1: offset: r= -989 (In Focus); b= -0.2 (In Focus) sp1: pred. move: spAverageMove= -462 sp1: pred. resid: r= -526, b= -1.7, txt= OK, spTemp = 8.2 Night ===== Time TSP1 R1 B1 Move1 B1Resid ============================================= 01:07:10 8.2 1319 -9.3 2137 -2.6 01:09:30 8.2 -659 -2.2 24 -2.1 ---- Time Tracking ---- *=*=*= Observatory: APO *=*=*= MJD: 60943 Fill night time in Hours below *=*=*= Total bright time : 0.4 *=*=*= Bright time, queued observations : 0.3 *=*=*= Bright time, commissioning/engineering: 0 *=*=*= Bright time lost to weather : 0.1 *=*=*= Bright time lost to technical issues : 0 *=*=*= Total dark time : 9.7 *=*=*= Dark time, queued observations : 0 *=*=*= Dark time, commissioning/engineering : 0 *=*=*= Dark time lost to weather : 9.7 *=*=*= Dark time lost to technical issues : 0