APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Monday April 06, 2026 (SJD 61137) ---- Observing Team ---- Kaike Pan ---- Observing Plan ---- Mon 06 Apr 2026 61137 0.76 02:21 02:36 11:33 08:34 17:33 --- dark until 06:13 ( 3.6 h), then bright ( 6.5 h, w/ 1.1 h for 8 deg design) ---- Observing Summary ---- The entire night is lost to high humidity, clouds. We never open. Completed BOSS monthly checkout while I am closed for humidity. ---- Observing Log ---- Afternoon: ========= Boss collimation checked, no adjustment made. sp1: offset: r= 989 (In Focus); b= -8.3 (Out of focus) sp1: pred. move: spAverageMove= 1812 sp1: pred. resid: r= -823, b= -2.6, txt= OK, spTemp = 4.5 BOSS cal, APOGEE evening cal, fvc dark, GFA bias, dark,were taken, checked. Exercised robots. No issue. All actors, systems are alive, working well. High humidity, rain drops, no evening ventilation. Night: ====== High humidity, delayed open. 07:50Z: started BOSS monthly checkout procedure. 25 biases: 7:51:06 boss exposure 0.0, file=399623 - boss exposure 0.0, file=399647 3 900-sec dark: 8:25:04 boss exposure 900.0, file=399648 - boss exposure 900.0, file=399650 Many cosmic rays features are seen in 900 sec dark, but numbers for 98th percentile values are fine. po_plotbias,399646,plotfile='biasPlot2026-04-06.ps' Filename 02% 05% 10% 50% 90% 95% 98% ------------------- ------ ------ ------ ------ ------ ------ ------ sdR-b1-00399646.fit -4.6 -3.4 -2.6 -0.0 2.4 3.1 3.7 sdR-r1-00399646.fit -6.7 -5.1 -3.9 -0.2 3.4 4.4 5.3 apo_plotbias,399649,plotfile='darkPlot2026-04-06.ps' Filename 02% 05% 10% 50% 90% 95% 98% ------------------- ------ ------ ------ ------ ------ ------ ------ sdR-b1-00399649.fit -4.5 -3.3 -2.4 0.2 2.9 3.6 4.3 sdR-r1-00399649.fit -6.3 -4.7 -3.5 0.3 4.1 5.1 6.1 ---- Mirror Numbers ---- PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A: 0.0020 0.0050 Axial B: -0.0320 -0.0270 Axial C: -0.1820 -0.1760 Trans D: -0.0250 -0.0200 Lateral E: 0.3400 0.3400 Lateral F: 0.5480 0.5475 GALILS Commanded: 8450 -1050 8800 22100 -2000 -1700 Actual: 8450 -1050 8800 22100 -2000 -1700 SETMIR VALUES PrimDesOrient: 0.0 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 -7.6400 Axial B: -7.5360 -7.5330 Axial C: -7.5270 -7.5280 Trans D: 0.2050 0.1940 GALILS Commanded: 2250900 2250600 2243250 -1750 -1750 Actual: 2217071 2227288 2200649 -1750 -1750 SETMIR VALUES SecDesOrient: 1757.0 7.9 1.5 -39.3 35.42 SecOrient: 1758.23 8.03 1.59 -38.66 35.68 ---- Telescope Status ---- N/A Started ventilation N/A encl25m : open N/A encl25m : closed No interlocks bypassed Status at: 11:41:19Z Telescope Position: 121.0, 30.0, 0.0 mount Instrument mounted: FPS Counterweights at: 32.7, 32.0, 32.8, 31.9 LN2 autofill systems: Connected and turned on 180L LN2 dewar scale: SP1 125.0 lbs, 21.9 psi Chiller Flow: 7.45 L/min to FPS, 2.43 L/min to GFAs, 4.9/6.0 gpm total Chiller Temp: 5.5C No chiller alarms ---- Software Used ---- -- STUI software: STUI : 1.7.21 alerts : 2.3.0 boss : 6.0.5a1 -boss.specMec : 3.0.4 apo : 4.1.0 fliswarm : 0.6.0 jaeger : 1.11.0 kaiju : 1.4.1 coordio : 1.18.1 fps_calibrati : 2025.12.04 cherno : 1.1.0 astrometrynet : 0.93 hal : 1.4.1 hartmann : 2.0.2 hub : 5.0.1a0 mcp : 2.3.1 -mcp.plc : 35 -mcp.azFiduci : v1_153 -mcp.altFiduc : v1_153 -mcp.rotFiduc : v1_153 tcc : 1.4.0 apogee : not availble apogeecal : not availble apogeeql : v1_7_0dev STUIAdditions : FAILED Boson : 0.6.0 sdss-obstools : 3.9.3 TPM : 1.2-31-gd7eb MCP : 2.3.1 PLC : V35 Fiducials : v1_153 idlspec2d : v6_2_1 Kronos : 2.1.0a roboscheduler : 2.1.0 /dev/sdb1 2.0T 497G 1.6T 25% /home /dev/sdd1 22T 15T 6.6T 69% /data ---- APOGEE Data Summary ---- check_ap 61137 num field design config exptype dithpix nread relflux okay dx dy sigx sigy fpi1 fpi2 -------- ----- ------ ------ ------------ ------- ----- ------- ---- ------- ------- ------ ------ ---- ---- 55750001 -999 -999 25995 DARK 13.5 3 67 True -- -- -- -- -- -- 55750002 -999 -999 25995 DARK 13.5 60 -23 True -- -- -- -- -- -- 55750003 -999 -999 25995 QUARTZFLAT 13.5 10 111 True -- 0.67 -- 0.86 -- -- 55750004 -999 -999 25996 ARCLAMP-THAR 13.5 12 92 True 24.08 1.35 1.06 0.78 -- -- 55750005 -999 -999 25996 ARCLAMP-UNE 13.5 40 3 True -10.23 -5.18 0.95 0.80 -- -- 55750006 -999 -999 25996 ARCLAMP-THAR 13.0 12 89 True 23.57 1.27 1.05 0.85 -- -- 55750007 -999 -999 25996 ARCLAMP-UNE 13.0 40 2 True -10.52 -5.12 0.38 0.87 -- -- 55750008 -999 -999 25996 DARK 13.0 60 7 True -- -- -- -- -- -- 55750009 -999 -999 25996 FPI 13.0 30 240 True -14.15 -5.14 1.11 0.90 -- -- 55750010 -999 -999 25996 FPI 13.5 30 252 True 11.07 -5.16 1.13 0.90 -- -- num exptype nread mtp1 mtp2 mtp3 mtp4 mtp5 mtp6 mtp7 mtp8 mtp9 mtp10 -------- ---------- ----- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----- 55750003 QUARTZFLAT 10 74 77 89 99 100 93 94 98 99 90 ---- Time Tracking ---- *=*=*= Observatory: APO *=*=*= MJD: 61137 Fill night time in Hours below *=*=*= Total bright time : 6.5 *=*=*= Bright time, queued observations : 0 *=*=*= Bright time, commissioning/engineering: 0 *=*=*= Bright time lost to weather : 6.5 *=*=*= Bright time lost to technical issues : 0 *=*=*= Total dark time : 3.6 *=*=*= Dark time, queued observations : 0 *=*=*= Dark time, commissioning/engineering : 0 *=*=*= Dark time lost to weather : 3.6 *=*=*= Dark time lost to technical issues : 0