APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Wednesday May 20, 2026 (SJD 61181) ---- Observing Team ---- Dan Oravetz ---- Observing Plan ---- Wed 20 May 2026 61181 dark (7.4 h) plus 1.1 h for 8 deg design ---- Observing Summary ---- We did not open tonight due to very high dust counts the first several hours of the night and clouds throughout the night. Notes ===== (1) Reported collisions: 650 (afternoon checkout) ---- Observing Log ---- ============================================================================ AFTERNOON CHECKOUT ============================================================================ All systems alive and responsive. Restarted cherno. Disk space: Filesystem Size Used Avail Use% Mounted on /dev/sdb1 2.0T 509G 1.6T 25% /home /dev/sdd1 22T 14T 6.9T 68% /data FPS powered on. Positioners are home/folded: 21:26:36 APO.doravetz_2 61 jaeger i folded=T 21:26:36 APO.doravetz_2 61 jaeger : text="All positioners are folded." 21:26:59 APO.doravetz_2 62 jaeger : permanently_disabled=463,647,986; manually_disabled=1051 Loaded a manual folded configuration: 221:27:48 CmdStarted: APO.doravetz_2 63 jaeger configuration load --from-positions 21:27:50 APO.doravetz_2 63 jaeger d text="Resetting cherno offsets." 21:27:50 APO.doravetz_2 63 jaeger d text="Focal plane scale: 1.0." 21:27:50 APO.doravetz_2 63 jaeger d configuration_loaded=26631,-999,-999,-999.0,-999.0,0,-999.0,-999.0,/home/sdss5/software/sdsscore/main/apo/summary_files/026XXX/0266XX/confSummary-26631.par,F 21:27:55 APO.doravetz_2 63 jaeger i configuration_snapshot=/data/logs/jaeger/configuration_snapshots/61181/configuration_snapshot_61181_26631.pdf 21:27:55 APO.doravetz_2 63 jaeger d design_preloaded=-999 21:27:55 APO.doravetz_2 63 jaeger : text="Configuration 26631 loaded." 21:27:55 CmdDone: APO.doravetz_2 63 jaeger configuration load --from-positions Took a '--no-apply' FVC image: 21:29:53 FVC Loop fvc_rms= 37.29 fvc_deltarms= None fvc_filename=/data/fcam/61181/fimg-fvc1n-0001.fits fvc_perc_90= 49.40 fvc_percent_reached= 2.60 fvc iterations= 1 Scattered-light check: 21:30:10 CmdStarted: APO.doravetz_2 66 fliswarm talk -n fvc expose 50 No evidence of light artifacts. GFA biases, darks, and flat: 21:31:22 CmdStarted: APO.doravetz_2 67 fliswarm talk -c gfa expose --bias --count 10 21:32:20 CmdStarted: APO.doravetz_2 68 fliswarm talk -c gfa expose --dark --count 5 5 21:33:26 CmdStarted: APO.doravetz_2 70 fliswarm talk -c gfa expose --flat 1 Exercised positioners: 21:33:39 CmdStarted: APO.doravetz_2 72 jaeger configuration random --danger 21:35:15 .jaeger 0 jaeger e text="A collision was detected in positioner 650. Sending SEND_TRAJECTORY_ABORT and locking the FPS." 21:35:15 .jaeger 0 jaeger w text="Locking the FPS. (JaegerUserWarning)" 21:35:15 .jaeger 0 jaeger i fps_status=0x14 21:35:17 .jaeger 0 jaeger e locked=T; locked_by=650; locked_axes=alpha; locked_alpha=10.007672533392906; locked_beta=170.01068115234375 21:37:19 CmdStarted: APO.doravetz_2 81 jaeger configuration random --danger 21:38:48 APO.doravetz_2 81 jaeger d trajectory_dump_file=/data/logs/jaeger/trajectories/61181/trajectory-61181-0014.json 21:38:48 CmdDone: APO.doravetz_2 81 jaeger configuration random --danger 21:38:52 .jaeger 0 jaeger i snapshot=/data/logs/jaeger/snapshots/61180/fps_snapshot_61180_0096.pdf 21:39:00 CmdStarted: APO.doravetz_2 85 jaeger configuration reverse BOSS hartmanns, arc, flat: 21:42:37 BOSS expNum=401482, expTime= 4.0s 21:43:17 BOSS expNum=401483, expTime= 4.0s 21:43:57 sp1.motor.move= 23, 19, 23 21:43:57 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 = 7.3 21:44:16 BOSS expNum=401484, expTime= 4.0s 21:45:51 BOSS expNum=401485, expTime= 25.0s Ventilation delayed due to very high dust counts. ============================================================================ NIGHT ============================================================================ Did not open at sunset due to very high dust and threatening clouds. Some dusty raindrops did fall on site at ~02:45Z, but didn't last long. 07:01Z - The reported 1.0um dust counts have dropped drastically compared to the high a couple of hours ago (~50k!). Now it's sitting around ~3k. The radar returns have largely vacated the county, with the exception of a small blip to the east. It's still largely cloudy, however, and that's what we're waiting on right now. 09:39Z - We are still completely clouded out. Sometimes the satellite suggests a sucker hole will move in from Las Cruces, but it doesn't and more clouds just form in the basin and keep moving over us. 10:32Z - Called it a night. FPS powered-off. Positioners are home/folded. APOGEE morning cals started. ---- Mirror Numbers ---- PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A: 0.0050 0.0030 Axial B: -0.0280 -0.0300 Axial C: -0.0250 -0.0280 Trans D: -0.0190 -0.0230 Lateral E: 0.3400 0.3400 Lateral F: 0.5475 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: -7.6410 -7.6400 Axial B: -7.5340 -7.5350 Axial C: -7.5280 -7.5270 Trans D: 0.2030 0.1960 GALILS Commanded: 2245050 2241900 2236850 -1750 -1700 Actual: 2215616 2225197 2199584 -1750 -1700 SETMIR VALUES SecDesOrient: 1757.0 7.9 1.5 -39.3 35.42 SecOrient: 1756.98 7.85 1.5 -39.31 35.21 ---- Telescope Status ---- Status at: 09:42Z Telescope stowed at: 121.0, 30.0, 0.0 mount Instrument mounted: FPS Counterweights at: manually adjusted for telescope balance w/ FPS LN2 autofill systems: Connected and turned on 180L LN2 dewar scales: SP1 204 lbs, 21.5 psi FPS Status ========== CP10 Loop = 7.48 L/min GFA Loop = 2.39 L/min Supply pressure = 44.4 psi Return pressure = 29.8 psi Chiller Status ============== Set temperarature = 10.5 C Flow = 5.0 Gpm ---- Software Used ---- 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 : 1.11.2a1 kaiju : 1.4.1 coordio : 1.18.1 fps_calibrati : 2025.12.04 cherno : 1.2.2 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 available apogeecal : not available apogeeql : v1_7_0dev boson : 0.6.1 sdss-obstools : 3.9.3 TPM : 1.2-31-gd7eb MCP : 2.3.1 idlspec2d : v6_2_1 Kronos : 2.1.0a roboscheduler : 2.1.0 ---- APOGEE Data Summary ---- Morning cals ============ (observers39) [observer@sdss5-hub: ~]$ list_ap -m 61180 APOGEE data list, mjd=61180, all raw_data: /data/apogee/utr_cdr/61180/apRaw-*.fits archive: /data/apogee/archive/61180/apR-[a,b,c]-*.apz quickred: /data/apogee/quickred/61180/apq-*.fits ------------------------------------------------------------------------------ mjd i UT File/Exp Imtype Nread A/B Dth Design-Cfg Arch Offset %Flux/FPI Comm ------------------------------------------------------------------------------ 61180 53 10:14 56180053 Dark 60 A 13.0 ---------- a-b-c - - 61180 54 10:25 56180054 Dark 60 A 13.0 ---------- a-b-c - - 61180 55 10:36 56180055 Dark 60 A 13.0 ---------- a-b-c - - 61180 56 10:38 56180056 QuarFlat 10 A 13.0 ---------- a-b-c - 104 61180 57 10:39 56180057 QuarFlat 10 A 13.0 ---------- a-b-c - 104 61180 58 10:41 56180058 QuarFlat 10 A 13.0 ---------- a-b-c - 104 61180 59 10:43 56180059 Arc-Thar 12 B 13.5 ---------- a-b-c 2.09 103 61180 60 10:51 56180060 Arc-Une 40 B 13.5 ---------- a-b-c 2.13 98 61180 61 10:53 56180061 Arc-Thar 12 A 13.0 ---------- a-b-c 1.59 100 61180 62 11:00 56180062 Arc-Une 40 A 13.0 ---------- a-b-c 1.63 97 61180 63 11:06 56180063 Dark 30 A 13.0 ---------- a-b-c - - 61180 64 11:11 56180064 InteFlat 30 A 13.0 ---------- a-b-c - - 61180 65 11:16 56180065 InteFlat 30 A 13.0 ---------- a-b-c - - 61180 66 11:22 56180066 InteFlat 30 A 13.0 ---------- a-b-c - - 61180 67 11:27 56180067 Dark 30 A 13.0 ---------- a-b-c - - 61180 68 11:33 56180068 Arc---- 30 A 13.0 ---------- a-b-c - 101 FPI A 61180 69 11:38 56180069 Arc---- 30 B 13.5 ---------- a-b-c - 97 FPI B ------------------------------------------------------------------------------ (observers39) [observer@sdss5-hub: ~]$ check_ap 61180 num field design config exptype dithpix nread relflux okay dx dy sigx sigy fpi1 fpi2 -------- ------ ------ ------ ------------ ------- ----- ------- ----- ------- ------- ------ ------ ---- ---- 56180053 100570 752944 26630 DARK 13.0 60 -17 True -- -- -- -- -- -- 56180054 100570 752944 26630 DARK 13.0 60 -18 True -- -- -- -- -- -- 56180055 100570 752944 26630 DARK 13.0 60 3 True -- -- -- -- -- -- 56180056 100570 752944 26630 QUARTZFLAT 13.0 10 113 True -- 0.77 -- 0.86 -- -- 56180057 100570 752944 26630 QUARTZFLAT 13.0 10 114 True -- 0.77 -- 0.86 -- -- 56180058 100570 752944 26630 QUARTZFLAT 13.0 10 113 True -- 0.77 -- 0.86 -- -- 56180059 100570 752944 26630 ARCLAMP-THAR 13.5 12 1 True -3.52 -5.05 1.13 0.79 -- -- 56180060 100570 752944 26630 ARCLAMP-UNE 13.5 40 2 True -8.89 -5.15 0.98 1.14 -- -- 56180061 100570 752944 26630 ARCLAMP-THAR 13.0 12 1 True -3.97 -5.05 1.06 0.93 -- -- 56180062 100570 752944 26630 ARCLAMP-UNE 13.0 40 2 True -9.49 -4.95 0.33 0.88 -- -- 56180063 100570 752944 26630 DARK 13.0 30 10 False -- -- -- -- -- -- 56180064 100570 752944 26630 INTERNALFLAT 13.0 30 96 True -- -- -- -- -- -- 56180065 100570 752944 26630 INTERNALFLAT 13.0 30 96 True -- -- -- -- -- -- 56180066 100570 752944 26630 INTERNALFLAT 13.0 30 96 True -- -- -- -- -- -- 56180067 100570 752944 26630 DARK 13.0 30 240 True -- -- -- -- -- -- 56180068 100570 752944 26630 FPI 13.0 30 245 True -0.76 -5.06 1.11 0.89 -- -- 56180069 100570 752944 26630 FPI 13.5 30 245 True -0.26 -5.00 1.11 0.88 -- -- num exptype nread mtp1 mtp2 mtp3 mtp4 mtp5 mtp6 mtp7 mtp8 mtp9 mtp10 -------- ---------- ----- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----- 56180056 QUARTZFLAT 10 74 81 90 101 100 95 96 99 100 92 56180057 QUARTZFLAT 10 78 84 91 102 101 96 96 100 100 93 56180058 QUARTZFLAT 10 78 85 92 102 101 96 96 100 101 93 (observers39) [observer@sdss5-hub: ~]$ list_ap APOGEE data list, mjd=61181, all raw_data: /data/apogee/utr_cdr/61181/apRaw-*.fits archive: /data/apogee/archive/61181/apR-[a,b,c]-*.apz quickred: /data/apogee/quickred/61181/apq-*.fits ------------------------------------------------------------------------------ mjd i UT File/Exp Imtype Nread A/B Dth Design-Cfg Arch Offset %Flux/FPI Comm ------------------------------------------------------------------------------ 61181 1 21:37 56190001 Dark 3 B 13.5 ---------- a-b-c - - 61181 2 21:49 56190002 Dark 60 B 13.5 ---------- a-b-c - - 61181 3 21:51 56190003 QuarFlat 10 B 13.5 ---------- a-b-c - 104 61181 4 21:53 56190004 Arc-Thar 12 B 13.5 ---------- a-b-c 2.09 101 61181 5 22:00 56190005 Arc-Une 40 B 13.5 ---------- a-b-c 2.13 97 61181 6 22:02 56190006 Arc-Thar 12 A 13.0 ---------- a-b-c 1.60 100 61181 7 22:10 56190007 Arc-Une 40 A 13.0 ---------- a-b-c 1.62 97 61181 8 22:21 56190008 Dark 60 A 13.0 ---------- a-b-c - - 61181 9 22:26 56190009 Arc---- 30 A 13.0 ---------- a-b-c - 99 FPI A 61181 10 22:32 56190010 Arc---- 30 B 13.5 ---------- a-b-c - 100 FPI B ------------------------------------------------------------------------------ (observers39) [observer@sdss5-hub: ~]$ check_ap 61181 num field design config exptype dithpix nread relflux okay dx dy sigx sigy fpi1 fpi2 -------- ----- ------ ------ ------------ ------- ----- ------- ---- ------- ------- ------ ------ ---- ---- 56190001 -999 -999 26631 DARK 13.5 3 67 True -- -- -- -- -- -- 56190002 -999 -999 26631 DARK 13.5 60 -35 True -- -- -- -- -- -- 56190003 -999 -999 26631 QUARTZFLAT 13.5 10 109 True -- 0.68 -- 0.85 -- -- 56190004 -999 -999 26631 ARCLAMP-THAR 13.5 12 88 True 25.09 1.18 1.06 0.82 -- -- 56190005 -999 -999 26631 ARCLAMP-UNE 13.5 40 2 True 2.32 -5.12 0.91 0.80 -- -- 56190006 -999 -999 26631 ARCLAMP-THAR 13.0 12 1 True -4.05 -5.17 1.29 0.95 -- -- 56190007 -999 -999 26631 ARCLAMP-UNE 13.0 40 2 True -9.57 -5.11 0.30 0.90 -- -- 56190008 -999 -999 26631 DARK 13.0 60 -5 True -- -- -- -- -- -- 56190009 -999 -999 26631 FPI 13.0 30 242 True -0.77 -5.17 1.10 0.88 -- -- 56190010 -999 -999 26631 FPI 13.5 30 242 True 12.06 -5.14 1.12 0.90 -- -- num exptype nread mtp1 mtp2 mtp3 mtp4 mtp5 mtp6 mtp7 mtp8 mtp9 mtp10 -------- ---------- ----- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----- 56190003 QUARTZFLAT 10 74 81 91 101 100 95 96 100 100 91 ---- BOSS Data Summary ---- Reading FITS from /data/spectro//61181 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - n Time Filename design-field cfg flav shu Exp colA colB colC Hrt - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 21:37 b1-00401479 ----------- ---- bia Clo 0.0 -421 -373 -362 2 21:37 r1-00401479 ----------- ---- bia Clo 0.0 -421 -373 -362 3 21:40 b1-00401480 -999--999 26631 arc Lef 4.1 -421 -373 -362 HART 4 21:40 r1-00401480 -999--999 26631 arc Lef 4.1 -421 -373 -362 HART 5 21:41 r1-00401481 -999--999 26631 arc Rig 4.1 -421 -373 -362 HART 6 21:41 b1-00401481 -999--999 26631 arc Rig 4.1 -421 -373 -362 HART 7 21:42 r1-00401482 -999--999 26631 arc Lef 4.1 -236 -188 -178 HART 8 21:42 b1-00401482 -999--999 26631 arc Lef 4.1 -236 -188 -178 HART 9 21:43 r1-00401483 -999--999 26631 arc Rig 4.1 -236 -188 -178 HART 10 21:43 b1-00401483 -999--999 26631 arc Rig 4.1 -236 -188 -178 HART 11 21:44 b1-00401484 -999--999 26631 arc Out 4.1 -213 -169 -155 12 21:44 r1-00401484 -999--999 26631 arc Out 4.1 -213 -169 -155 13 21:45 b1-00401485 -999--999 26631 fla Out 25.1 -213 -169 -155 14 21:45 r1-00401485 -999--999 26631 fla Out 25.1 -213 -169 -155 ---- Time Tracking ---- *=*=*= Observatory: APO *=*=*= MJD: 61181 Fill night time in Hours below *=*=*= Total bright time : 1.1 *=*=*= Bright time, queued observations : 0 *=*=*= Bright time, commissioning/engineering: 0 *=*=*= Bright time lost to weather : 1.1 *=*=*= Bright time lost to technical issues : 0 *=*=*= Total dark time : 7.4 *=*=*= Dark time, queued observations : 0 *=*=*= Dark time, commissioning/engineering : 0 *=*=*= Dark time lost to weather : 7.4 *=*=*= Dark time lost to technical issues : 0