APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Tuesday October 20, 2026 (SJD 61334) ---- Observing Team ---- Audrey Oravetz Cary Smith (support) Katie Grabowski (support) Dan Oravetz (support) Kaike Pan (support) ---- Observing Plan ---- Tue 20 Oct 2026 61334 0.74 01:18 01:32 12:03 20:27 07:00 --- bright until 08:32 ( 7.2 h, w/ 0.2 h for 12 deg design), then dark ( 3.5 h) ---- Observing Summary ---- Tonight was a wash, mainly due to high humidity, but also partly due to a possible faulty positive limit switch for azimuth and/or a faulty motor within the PLC cabinet downstairs. Many people were contacted for assistance, and Cary and Katie came to the site to troubleshoot. I am very grateful. See log body for more details. ---- Observing Log ---- Afternoon: ========== 21:15:42 boss exposure 0.0, file=405501 21:17:50 boss exposure 20.0, file=405502 21:36:54 boss exposure 4.0, file=405506 21:37:34 boss exposure 4.0, file=405507 21:38:20 sp1.motor.move= -2415, -2413, -2415 21:38:20 Hartmann collimate output sp1: offset: r= -2968 (Out of focus); b= 5.8 (Out of focus) sp1: pred. move: spAverageMove= -2415 sp1: pred. resid: r= -552, b= -1.7, txt= OK, spTemp = 8.1 21:39:14 boss exposure 4.0, file=405508 21:43:42 boss exposure 25.0, file=405509 21:50:30 Config Loaded: -999-27994 21:51:03 jaeger.jaeger 200 fliswarm i filename_bundle=/data/fcam/61334/fimg-fvc1n-0001.fits 21:51:03 jaeger.jaeger 200 fliswarm : 21:51:03 CmdDone: jaeger.jaeger 200 fliswarm talk -c fvc expose 5.0 21:52:26 APO.aoravetz2 41 fliswarm i filename_bundle=/data/fcam/61334/fimg-fvc1n-0002.fits 21:52:26 APO.aoravetz2 41 fliswarm : 21:52:26 CmdDone: APO.aoravetz2 41 fliswarm talk -n fvc expose 50 jaeger configuration random --danger 21:53:43 Jaeger collision: 650 jaeger configuration reverse fliswarm talk -c gfa expose --bias --count 10 fliswarm talk -c gfa expose --dark --count 5 5 fliswarm talk -c gfa expose --flat 1 Did not ventilate at sunset due to high humidity. Night: ====== 03:00Z - Opened the telescope when the humidity dropped, but the clouds remained. 03:00:01 apogee.expose=apRaw-57720010, 5, B, DomeFlat 03:01:16 apogee.expose=apRaw-57720011, 5, B, DomeFlat 03:02:31 apogee.expose=apRaw-57720012, 5, B, DomeFlat The enclosure was opened. The gang connector was connected. A test slew unfortunately amounted to the azimuth drive failing to move. The brake cleared just fine with an axis init, but when I tried to slew, there was no movement in the axis at all and *BO* was seen within the MCP. Amplifiers and wind baffle control box behaved properly and were power cycled, stop buttons were cycled... I did notice that when the brakes came back on, the interlocks window read RED az_mtr_cw_perm and az_mtr_ccw_perm and wind_mtr_cw_perm and wind_mtr_ccw_perm; There was a large fiducial error during a time when the telescope was immobile. The telescope is still physically positioned at the 121 mark (as indicated by the floor markings). 03:48:48 Az: ind=22, deg=121.0, err= -338235 error is too large to be corrected ( > 600) I also noticed this error message in STUI after a small move was attempted: 04:15:38 .mcp 0 mcp i trace=\"MGT: bad az state E_STOP_EVENT: ID_POS_LIMIT\" The PLC code flagged a RED az_dir_ccw bit set, possibly indicating a faulty positive limit switch. Cary, Katie, Kaike, and Dan were contacted for assistance. Kaike verified that we were still running on the old version of fiducial tables. Dan searched through gitHub, MCP logs, and the PLC and helped identify the positive limit switch error. Cary and Katie came to the site and speculated that the limit switch and/or one azimuth motor within the PLC cabinet could be faulty. The humidity rose back over the limit anyway, so there was nothing else that could be worked on tonight. More troubleshooting will take place in the morning. Started APOGEE morningcals and turned off the FPS. ---- Mirror Numbers ---- PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A: -5.4280 -5.4260 Axial B: -5.0380 -5.0390 Axial C: -5.2790 -5.2780 Trans D: -0.8760 -0.8710 Lateral E: 0.3240 0.3245 Lateral F: 0.5335 0.5335 GALILS Commanded: 11450 -1050 5900 26550 -14400 -13850 Actual: 11450 -1050 5900 26550 -14400 -13850 SETMIR VALUES PrimDesOrient: 0.0 -43.05 -8.77 -751.82 -556.2 PrimOrient: -1.06 -43.05 -8.77 -751.82 -556.2 SECONDARY: ---------- Focus: 0.0000 Air temp: 0.00 Altitude: 30.0 MIGS TONIGHT NOMINAL Axial A: -7.9550 -7.9570 Axial B: -6.1100 -6.1140 Axial C: -6.0760 -6.0790 Trans D: 0.2040 0.2050 GALILS Commanded: 362000 383700 342550 -1500 1850 Actual: 321870 350021 299627 -1500 1850 SETMIR VALUES SecDesOrient: 257.0 14.2 5.9 -72.0 -12.76 SecOrient: 257.0 14.2 5.93 -72.33 -13.19 ---- Focus Log ---- Time Field-Design AZ ALT ROT Focus rms ArcOffX OffY Seeing errRA[prc10,prc90] errDec[prc10,prc90] ---- Telescope Status ---- No interlocks bypassed Status at: Telescope stowed at: 121.0, 30.0, 0.0 mount Instrument mounted: FPS Counterweights at: 32s LN2 autofill systems: Connected and turned on 180L LN2 dewar scales: SP1 262 lbs, 21.5 psi FPS Status ========== CP10 Loop = 7.55 L/min GFA Loop = 2.54 L/min Supply pressure = 43.2 psi Return pressure = 28.6 psi Chiller Status ============== Set temperarature = 11.0 C Flow = 5.0 Gpm ---- Software Used ---- Get Versions, 10/20/26, 21:13:42 -- STUI software: STUI : 1.7.21 alerts : 2.3.0 boss : 6.0.5a1 -boss.specMec : 3.0.4 apo : 4.1.0 fliswarm : 0.7.0 jaeger : 1.11.2a1 kaiju : 1.4.1 coordio : 1.18.1 fps_calibrati : 2025.12.04+3e7e2d8 cherno : 1.2.2 astrometrynet : 0.97 hal : 1.4.1 hartmann : 2.0.2 hub : 5.0.1a0 mcp : 2.3.1 -mcp.plc : 35 -mcp.azFiduci : v1_154 -mcp.altFiduc : v1_154 -mcp.rotFiduc : v1_154 tcc : 1.4.0 apogee : not availble apogeecal : not availble apogeeql : 2.0.0a0 STUIAdditions : FAILED Boson : 0.7.0 -- done -- --------------Other Versions-------------- sdss-obstools : 3.9.3 TPM : 1.2-31-gd7eb MCP : 2.3.1 PLC : V35 Fiducials : v1_154 idlspec2d : 6.3.0dev Kronos : 2.1.0a roboscheduler : 2.1.0 /dev/sdb1 1.0T 434G 590G 43% /home /dev/sdc1 22T 19T 2.0T 91% /data ---- APOGEE Data Summary ---- (observers39) [observer@sdss5-hub: ~]$ list_ap -m 61333 --morning APOGEE data list, mjd=61333, all raw_data: /data/apogee/utr_cdr/61333/apRaw-*.fits archive: /data/apogee/archive/61333/apR-[a,b,c]-*.apz quickred: /data/apogee/quickred/61333/apq-*.fits ------------------------------------------------------------------------------ mjd i UT File/Exp Imtype Nread A/B Dth Design-Cfg Arch Offset %Flux/FPI Comm ------------------------------------------------------------------------------ 61333 26 10:43 57710026 Dark 60 A 13.0 ---------- a-b-c - - 61333 27 10:54 57710027 Dark 60 A 13.0 ---------- a-b-c - - 61333 28 11:04 57710028 Dark 60 A 13.0 ---------- a-b-c - - 61333 29 11:06 57710029 QuarFlat 10 A 13.0 ---------- a-b-c - 100 61333 30 11:08 57710030 QuarFlat 10 A 13.0 ---------- a-b-c - 100 61333 31 11:10 57710031 QuarFlat 10 A 13.0 ---------- a-b-c - 100 61333 32 11:12 57710032 Arc-Thar 12 B 13.5 ---------- a-b-c 3.91 103 61333 33 11:19 57710033 Arc-Une 40 B 13.5 ---------- a-b-c 3.92 95 61333 34 11:22 57710034 Arc-Thar 12 A 13.0 ---------- a-b-c 3.32 103 61333 35 11:29 57710035 Arc-Une 40 A 13.0 ---------- a-b-c 3.40 96 61333 36 11:34 57710036 Dark 30 A 13.0 ---------- a-b-c - - 61333 37 11:40 57710037 InteFlat 30 A 13.0 ---------- a-b-c - - 61333 38 11:45 57710038 InteFlat 30 A 13.0 ---------- a-b-c - - 61333 39 11:50 57710039 InteFlat 30 A 13.0 ---------- a-b-c - - 61333 40 11:56 57710040 Dark 30 A 13.0 ---------- a-b-c - - 61333 41 12:02 57710041 Arc---- 30 A 13.0 ---------- a-b-c - 94 FPI A 61333 42 12:07 57710042 Arc---- 30 B 13.5 ---------- a-b-c - 95 FPI B ------------------------------------------------------------------------------ APOGEE data list, mjd=61334, all raw_data: /data/apogee/utr_cdr/61334/apRaw-*.fits archive: /data/apogee/archive/61334/apR-[a,b,c]-*.apz quickred: /data/apogee/quickred/61334/apq-*.fits ------------------------------------------------------------------------------ mjd i UT File/Exp Imtype Nread A/B Dth Design-Cfg Arch Offset %Flux/FPI Comm ------------------------------------------------------------------------------ 61334 1 21:26 57720001 Dark 60 B 13.5 ---------- a-b-c - - 61334 2 21:27 57720002 QuarFlat 10 B 13.5 ---------- a-b-c - 100 61334 3 21:30 57720003 Arc-Thar 12 B 13.5 ---------- a-b-c 3.91 103 61334 4 21:37 57720004 Arc-Une 40 B 13.5 ---------- a-b-c 3.92 95 61334 5 21:39 57720005 Arc-Thar 12 A 13.0 ---------- a-b-c 3.34 102 61334 6 21:46 57720006 Arc-Une 40 A 13.0 ---------- a-b-c 3.38 95 61334 7 21:57 57720007 Dark 60 A 13.0 ---------- a-b-c - - 61334 8 22:03 57720008 Arc---- 30 A 13.0 ---------- a-b-c - 94 FPI A 61334 9 22:08 57720009 Arc---- 30 B 13.5 ---------- a-b-c - 98 FPI B 61334 10 03:00 57720010 DomeFlat 5 B 13.5 -999-27994 a-b-c - 132 61334 11 03:01 57720011 DomeFlat 5 B 13.5 -999-27994 a-b-c - 134 61334 12 03:03 57720012 DomeFlat 5 B 13.5 -999-27994 a-b-c - 135 61334 13 06:33 57720013 Dark 60 B 13.5 ---------- a-b-c - - cannot read file : /data/apogee/utr_cdr/61334/apRaw-57720014.fits ------------------------------------------------------------------------------ ---- BOSS Data Summary ---- Reading FITS from /data/spectro//61334 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - n Time Filename design-field cfg flav shu Exp colA colB colC Hrt - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 21:15 r1-00405501 ----------- ---- bia Clo 0.0 -2069 -2074 -2065 2 21:15 b1-00405501 ----------- ---- bia Clo 0.0 -2069 -2074 -2065 3 21:17 r1-00405502 ----------- ---- dar Clo 20.0 -2069 -2074 -2065 4 21:17 b1-00405502 ----------- ---- dar Clo 20.0 -2069 -2074 -2065 5 21:19 r1-00405503 752386-100467 27993 arc Lef 4.1 -2069 -2074 -2065 HART 6 21:19 b1-00405503 752386-100467 27993 arc Lef 4.1 -2069 -2074 -2065 HART 7 21:20 b1-00405504 752386-100467 27993 arc Rig 4.1 -2069 -2074 -2065 HART 8 21:20 r1-00405504 752386-100467 27993 arc Rig 4.1 -2069 -2074 -2065 HART 9 21:22 r1-00405505 752386-100467 27993 arc Out 4.1 -2069 -2074 -2065 10 21:22 b1-00405505 752386-100467 27993 arc Out 4.1 -2069 -2074 -2065 11 21:36 r1-00405506 752386-100467 27993 arc Lef 4.1 -2069 -2074 -2065 HART 12 21:36 b1-00405506 752386-100467 27993 arc Lef 4.1 -2069 -2074 -2065 HART 13 21:37 r1-00405507 752386-100467 27993 arc Rig 4.1 -2069 -2074 -2065 HART 14 21:37 b1-00405507 752386-100467 27993 arc Rig 4.1 -2069 -2074 -2065 HART 15 21:39 r1-00405508 752386-100467 27993 arc Out 4.1 -4484 -4487 -4480 16 21:39 b1-00405508 752386-100467 27993 arc Out 4.1 -4484 -4487 -4480 17 21:43 b1-00405509 752386-100467 27993 arc Out 25.1 -4484 -4487 -4480 18 21:43 r1-00405509 752386-100467 27993 arc Out 25.1 -4484 -4487 -4480 19 06:23 r1-00405510 ----------- ---- dar Clo 900.0 -4484 -4487 -4480 20 06:23 b1-00405510 ----------- ---- dar Clo 900.0 -4484 -4487 -4480 ---- BOSS Spectrographs Collimation ---- Time TSP1 R1 B1 Move1 B1Resid ============================================= ---- Weather Log ---- Wind 1 um DIMM IRSC Time Temp C Dewp C MPH Dir Dust fwhm mean sigma 18:00 14.7 9.0 10.2 98.3 77 18:15 13.5 8.7 10.3 17.3 dpDep 18:30 13.8 9.5 12.8 10.1 dpDep 18:45 14.1 10.0 10.5 91.1 dpDep 19:00 14.4 10.3 12.0 98.6 dpDep 19:15 15.8 11.1 11.4 37.4 dpDep 19:30 14.3 10.0 12.2 17.1 dpDep 19:45 15.1 10.1 19.4 12.2 dpDep 20:00 14.3 9.2 10.5 11.2 dpDep 20:15 13.8 8.5 10.2 06.3 dpDep 20:30 13.7 8.1 6.0 15.6 137 20:45 15.3 9.7 5.7 89.4 dpDep 21:00 15.8 9.2 13.3 08.6 166 21:15 14.1 9.0 9.8 32.1 119 21:30 15.4 9.9 9.8 34.3 dpDep 21:45 15.4 8.7 11.7 44.5 119 22:00 15.9 9.1 11.4 47.0 147 22:15 15.2 9.2 10.2 08.1 150 22:30 14.7 9.4 8.9 14.9 148 22:45 15.0 9.6 8.6 10.1 dpDep 23:00 14.1 8.6 11.0 31.8 dpDep 23:15 15.0 9.4 9.9 46.4 189 23:30 13.8 9.3 9.4 34.6 dpDep 23:45 13.3 10.6 9.9 26.0 dpDep 00:00 12.2 10.0 7.6 05.0 dpDep 00:15 11.4 10.2 7.1 09.7 dpDep 00:30 11.1 10.3 2.7 98.5 dpDep 00:45 11.1 10.4 3.3 18.3 dpDep 556 44.55 01:00 10.8 10.4 1.7 37.9 dpDep 559 60.80 01:15 10.6 10.2 1.2 23.0 dpDep 565 11.58 01:30 10.7 10.1 1.4 05.6 dpDep 564 14.26 01:45 10.8 9.4 1.2 49.5 dpDep 565 30.84 02:00 10.9 8.6 1.7 98.8 dpDep 342 27.40 02:15 10.6 7.8 2.5 78.6 dpDep 344 31.16 02:30 10.8 7.6 5.1 81.9 dpDep 344 40.18 02:45 11.0 7.3 1.2 74.1 dpDep 345 55.70 03:00 11.1 7.4 6.3 83.2 dpDep 348 77.20 03:15 11.4 7.4 6.4 82.0 dpDep 356 88.33 03:30 11.5 7.5 6.6 92.2 dpDep 342 34.04 03:45 11.5 7.7 8.4 89.6 dpDep 342 4.31 04:00 11.7 8.1 8.5 04.0 dpDep 342 2.77 04:15 11.3 8.1 8.1 86.1 dpDep 341 2.25 04:30 10.7 8.1 9.9 81.7 dpDep 342 2.43 04:45 10.5 7.5 8.7 72.7 dpDep 342 2.06 05:00 10.4 7.8 5.1 82.1 dpDep 342 8.59 05:15 10.3 8.3 7.9 80.4 dpDep 340 19.36 05:30 10.3 8.7 12.0 74.4 dpDep 348 62.46 05:45 10.3 8.9 9.6 65.8 dpDep 347 48.38 06:00 10.4 9.0 10.2 66.1 dpDep 526 42.90 06:15 10.6 8.9 7.4 73.8 dpDep 510 6.23 06:30 9.9 8.7 9.0 49.1 dpDep 498 5.23 ---- Time Tracking ---- *=*=*= Observatory: APO *=*=*= MJD: 61334 Fill night time in Hours below *=*=*= Total bright time : 7.2 *=*=*= Bright time, queued observations : 0 *=*=*= Bright time, commissioning/engineering: 0 *=*=*= Bright time lost to weather : 5.2 *=*=*= Bright time lost to technical issues : 2.0 *=*=*= Total dark time : 3.5 *=*=*= Dark time, queued observations : 0 *=*=*= Dark time, commissioning/engineering : 0 *=*=*= Dark time lost to weather : 3.5 *=*=*= Dark time lost to technical issues : 0 Tue 20 Oct 2026 61334 0.74 01:18 01:32 12:03 20:27 07:00 --- bright until 08:32 ( 7.2 h, w/ 0.2 h for 12 deg design), then dark ( 3.5 h)