Subject: 2.5m obslog 20201022 (SJD 59145) From: doravetz@apo.nmsu.edu Date: Fri, 23 Oct 2020 13:08:46 +0000 (UTC) APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Thursday October 22, 2020 (SJD 59145) ---- Observing Team ---- Kaike Pan Dan Oravetz ---- Observing Plan ---- Shakedown ---- Observing Summary ---- Another very busy night. Clear skies and good seeing. (1) Home/Relax Mirrors completed again tonight. Note that the M1 E MIG and M2 B MIG are reading 0.0000. The M2 A galil failed to move to commanded home position at one point, but the following attempt completed normally. (2) Rotator fiducials taken and new fiducial tables built and installed (v1_144). (3) Optical Collimation. The initial test tonight was to apply partial tilts (in the direction we know worked the last two nights), but not the full amount that results in the "mount limit" translation error, convert those tilts to tilts/translations, supply the new tilts/translations to setmir, and then try adjusting collimation at the new location again. Started from orient=0.00,-11.40,6.58,375.38,620.77, changed X Tilt to 20" and Y tilt to 40". There was some improvement in the collimation, but still a long ways off based on the out-of-focus image (gimg-0025). We converted that pure-tilt correction to new tilt/translation, the output was: orient=0.00,-35.71,-18.86,-1035.24,1962.47 The translation values for this orientation were acceptable (we hit the limit yesterday during testing for X trans at < -1500 um.) With this "new" orientation, we tried applying tilts up to as much as 50" (relative to the "new" orientation in X and Y) and we could not see significant improvement in the collimation (e.g., images #0031-50). As per our instructions for tonight's plan, since we didn't see notable improvement and we were applying significantly large tilts again anyway, we reverted back to the pure-tilt corrections from last night (X tilt = 69.89" and Y tilt = 100"), updated default.dat, and proceeded with other tasks. (4) Took both ring and grid data instrument data and updated the engCam instrument-block data file. The large offsets because of the tilt corrections to M1 resulted in stars off the images, but we used calibration offsets to compensate and proceeded with the pointing model. (5) Completed a 132-point pointing model. Turned out to be an excellent pointing model: Sky RMS = 2.16, Popn SD = 2.27. We loaded the new model and performed some test slews: the pointing is in fact very good. (6) With the new pointing model we tested tracking performance. We slewed to a star and let the telescope track for 20 minutes. Start: gimg-0548, 12:18:32Z, az=-136.7, alt=71.6, x=257.14 pix, y=254.28 pix End: gimg-0052, 12:38:15, az=-131.4, alt=68.6, x=258.08 pix, y=254.85 pix delta_x=0.94 pix = 0.4", delta_y=0.57 pix = 0.24" (7) We started a sequence of long APOGEE darks that will take many hours to complete (should finish around 10 am roughly). There are also BOSS darks in progress that will finish around 8am or so. ---- Observing Log ---- 23:30Z - Started ventilation and connected engCam. 00:25Z - Opened. ================== Home/Relax Mirrors ================== M1 -- PrimDesOrient=0.0,-11.37,6.87,375.47,621.12 home E,F: "position error", "999999999, 999999999, 999999999, 999999999, 000000000, 000000000" home D: "position error", "999999999, 999999999, 999999999, 000000000, 999999999, 999999999" home A,B,C: "position error", "000000000, -000000050, 000000000, 999999999, 999999999, 999999999" move 0.0,-11.37,6.87,375.47,621.12 'tcc queue run=relax' complete M2 -- home D: "position error", "999999999, 999999999, 999999999, 000000000, 999999999" home E: "position error", "999999999, 999999999, 999999999, 999999999, -000000050" home A,B,C: The position errors are larger than usual after several home attempts: "position error", "000003136, 000000465, -000000442, 999999999, 999999999" We're going to try to center the actuators and try homing again. Watching the Galil values after the command was executed we noticed the A actuator 'Command' value was around -7 million microsteps even though the command was 'A=0'. We also saw the following error message: Device Command galil A=0;B=0;C=0;XQ#MOVE Failing: galil A=0;?B=0;C=0;XQ#MOVE" The B and C actuators didn't quite make it to the commanded '0' (A was still so far from home due to the failed previous command), but we were able to get A,B,C centered on a subsequent command. We homed A,B,C after that and the errors were good after a few 'home' commands which is typical: home A,B,C: "position error", "000000012, -000000070, -000000108, 999999999, 999999999" ============= Fiducial Data ============= Kaike reduced the fiducial-crossing az and alt data that were collected early this morning. We took rotator fiducial-crossing data after the home/relax completed. =================== Optical Collimation =================== PrimDesOrient=0.0,-11.37,6.87,375.47,621.12 Last night's best collimation was observed with X Tilt = 70", Y Tilt = 100" focus = 2975 um ------- on-axis ------- focus adjusted to -500 um from best focus: gimg-0023: from best focus; orient=0.00,-11.40,6.58,375.38,620.77 Changed X Tilt to 20" and Y tilt to 40" which is in the direction of better collimation from the last couple of nights. gimg-0025: orient=-1.06,20.01,39.91,374.89,621.95 Some improvement in the collimation, but still a long ways off based on the donut. Now converting to new tip/tilt/translation, the output is: orient=0.00,-35.71,-18.86,-1035.24,1962.47 3.5m reported ~1.5" seeing (degrading from beginning of night). gimg-0030: orient=0.00,-35.71,-18.86,-1035.24,1962.47 Adjusted tilt: added +X and +Y gimg-0031: orient=-1.06,29.88,29.83,-1035.24,1961.71 star is off the image, reducing the tilt correction a bit gimg-0035: orient=0.00,25.07,25.00,-1035.21,1962.53 gimg-0036: orient=0.00,0.00,24.56,-1034.72,1962.28 gimg-0038: orient=0.01,-50.14,-50.00,-1035.32,1961.73 gimg-0039: orient=-1.05,-49.89,-25.00,-1035.13,1962.02 gimg-0040: orient=-1.05,-49.89,-25.00,-1035.13,1962.02 gimg-0041: orient=0.01,-50.14,-50.00,-1035.32,1961.73 gimg-0044: orient=-1.05,-49.89,-25.00,-1035.13,1962.02 gimg-0045: orient=0.01,-50.14,-50.00,-1035.32,1961.73 gimg-0046: orient=-1.04,-74.96,-50.00,-1035.50,1961.72 gimg-0047: orient=-1.05,-24.82,-50.00,-1035.18,1962.31 gimg-0048: orient=0.01,0.00,-50.00,-1035.07,1962.28 gimg-0049: orient=1.07,24.82,-50.00,-1035.00,1962.24 gimg-0050: orient=0.01,-50.14,-50.00,-1035.32,1961.73 gimg-0055: Rot 0 Obj, foc = 2975 gimg-0056: Rot 90 Obj, foc = 2975 gimg-0057: Rot 180 Obj, foc = 2975 gimg-0058: Rot 270 Obj, foc=2975 (260,246) average center Edited the default.dat file to use the output from the collimation calculation: orient=0.00,-35.71,-18.86,-1035.24,1962.47 Now take a set of rotator images: gimg-0066: Rot 0 Obj, foc = 2975 gimg-0067: Rot 90 Obj, foc = 2975 gimg-0068: Rot 180 Obj, foc = 2975 gimg-0069: Rot 270 Obj, foc = 2975 (260,247) new average center gimg-0070: new calculator orient: 0.00,-35.71,-18.86,-1035.24,1962.47 gimg-0071: 0,-50,-18.86,-1035.24,1962.47 gimg-0072: 0,-35.71,-40,-1035.24,1962.47 move 0.05,69.89,100.00,375.30,622.11 (last night's best orientation) gimg-0075: 0.05,69.89,100.00,375.30,622.11 gimg-0071 and gimg-0072: applied calculated tip/tilt/translation from calculator and tried changing tilts but the collimation didn't change much. gimg-0081: on-axis donut with best orient from last night --- FocusLoop --2020-10-23 05:16:42 current focus=3000.0 0 foc=2550 fwhm=8.196000 /data/ecam/59145/gimg-0088.fits 1 foc=2575 fwhm=7.293000 /data/ecam/59145/gimg-0089.fits 2 foc=2600 fwhm=6.683000 /data/ecam/59145/gimg-0090.fits 3 foc=2625 fwhm=6.249000 /data/ecam/59145/gimg-0091.fits 4 foc=2650 fwhm=4.986000 /data/ecam/59145/gimg-0092.fits 5 foc=2675 fwhm=4.235000 /data/ecam/59145/gimg-0093.fits 6 foc=2700 fwhm=3.711000 /data/ecam/59145/gimg-0094.fits 7 foc=2725 fwhm=3.177000 /data/ecam/59145/gimg-0095.fits 8 foc=2750 fwhm=3.454000 /data/ecam/59145/gimg-0096.fits gimg-0097: best-focus image gimg-0098: -500 um from focus gimg-0099: +500 um from focus Loaded new fiducial tables (v1_144). Ran some test slews to verify proper motion and slew behavior. ================ Instrument Block ================ Focus sweep. Best focus = 2750 um. Centering star in camera before starting grid data. Grid Data --------- gimg-0118 - target star is centered; RA offset = 111.6", Dec offset = -90" Started taking grid data with gimg-0160. Compiled the grid file for igor. igor.apo.nmsu.edu is off. Kaike restarted it. Fit the data and updated Instrument Block File with New Scale and Orientation. Ring Data --------- Started taking ring data with gimg-0261. Compiled the ring file for igor. Fit the data and updated Instrument Block File with new Rot_Inst_xy. Reloaded engCam instrument block. ============== Pointing Model ============== Arc offsets are clear and so are guide offsets, but because the tilts in M1 are so large for the collimation stars don't fall into the FOV of the engCam so we are leaving the az and alt calibration offsets. Telescope is 'Tracking' and fiducials are acceptable. Seeing is < 1" fwhm as measured in engCam image gimg-0280. Starting pointing model with gimg-0281. At gimg-0323 the engCam became disconnected. The ethernet cable needed to be reseated into the camera again. Old model with new data (huge RMS which we expected because of the offset from the tilts): coeff change value sigma 1 IA +102.33 2 IE -18.05 3 & HASA2 -1.60 4 & HASA5 +1.54 5 & ACES -2.09 6 & HECA2CE +1.24 7 & HECE3 -7.26 8 NPAE -6.96 9 CA +8.27 10 & HSCASE5 -1.14 11 AN -4.87 12 AW -0.31 13 TF +125.26 14 TX +11.06 Sky RMS = 139.54 Popn SD = 139.54 New model: coeff change value sigma 1 IA -2.355 +100.33 2.559 2 IE +0.001 +81.07 0.634 3 & HASA +0.011 +1.08 0.444 4 & HACA +0.011 -1.80 0.439 5 & ACES -2.09 6 & HESA2 -0.000 +0.80 0.268 7 & HECA2CE +1.24 8 & HESA5CE3 +0.000 +1.02 0.436 9 & HVSA2 +0.017 -1.25 0.366 10 NPAE -3.136 -3.14 3.260 11 CA +3.702 +109.40 3.881 12 AN +0.000 -4.73 0.242 13 AW -0.000 +2.30 0.244 14 TF +0.002 +110.71 2.073 15 TX +0.000 +20.80 0.780 Sky RMS = 2.15 Popn SD = 2.27 ==================== Tracking Performance ==================== 12:18Z - Slewed to a star (az=-135, alt=71) and then just let the telescope track. First image is gimg-0548. Start: gimg-0548, 12:18:32Z, az=-136.7, alt=71.6, x=257.14 pix, y=254.28 pix End: gimg-0052, 12:38:15, az=-131.4, alt=68.6, x=258.08 pix, y=254.85 pix delta_x=0.94 pix = 0.4", delta_y=0.57 pix = 0.24" 13:00Z - Closed. ---- Mirror Numbers ---- Mirror numbers taken after home/relax completed and before any collimation adjustments. PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A: -5.2900 -8.0940 Axial B: -4.9010 -7.6450 Axial C: -5.1780 -7.9180 Trans D: -4.4850 -4.5060 Lateral E: 0.0000 0.3700 Lateral F: 0.5615 0.5705 GALILS Commanded: 11200 -1850 6850 29650 21250 21050 Actual: 11200 -1850 6850 29650 21250 21050 SETMIR VALUES PrimDesOrient: 0.0 -11.37 6.87 375.47 621.12 PrimOrient: 0.0 -11.4 6.58 375.38 620.77 SECONDARY: ---------- Focus: 0.0000 Air temp: 11.89 Altitude: 29.999996178438877 MIGS TONIGHT NOMINAL Axial A: -8.1150 -0.0650 Axial B: 0.0000 -0.0720 Axial C: -8.1590 -0.1030 Trans D: 0.0140 -0.0970 GALILS Commanded: 2854204 2839704 2906705 -2250 -6900 Actual: 2839419 2820603 2869346 -2250 -6900 SETMIR VALUES SecDesOrient: 857.0 -14.01 -2.9 12.5 114.22 SecOrient: 3081.98 -13.99 -2.9 11.9 114.7 ---- Telescope Status ---- Status at: 13:07Z Telescope stowed at: 121.0, 30.0, 0.0 mount Instrument mounted: cartridge = engCam Counterweights at: 290 LN2 autofill systems: Connected and turned on 180L LN2 dewar scales: SP1 165 lbs, 21.7 psi ---- Software Used ---- Get Versions, 10/23/20, 01:26:29 --- STUI software --- STUI : 1.7.10 alerts : 2.0.1 apo : v1_11 boss : 5.0.1 -boss.specMec : 3.0.4 gcamera : v2_2 guider : 3.8.1 hartmann : 1.8.0 hub : v4.2.4 mcp : 1.12-10-g3766 -mcp.plc : 34 -mcp.azFiduci : v1_142 -mcp.altFiduc : v1_142 -mcp.rotFiduc : v1_142 platedb : 2.8.0 sop : 4.0.0 tcc : 1.4.0 apogee : not available apogeecal : not available apogeeql : v1_6_1 APO-local : not available --- Other versions --- idlspec2d : v5_7_12 plate-mapper3 : NOCVS:v7_0_7 petunia : git autoscheduler : 1.5.4 sdss_python_module: trunk mangadrp : trunk exported ---- Weather Log ---- Wind 1 um DIMM IRSC Time Temp C Dewp C MPH Dir Dust fwhm mean sigma 18:00 15.3 -6.8 11.2 247.9 955 18:15 16.4 -6.6 12.7 248.5 dpDep 18:30 15.6 -6.8 9.9 234.0 886 18:45 16.1 -6.4 13.4 262.5 1123 19:00 14.7 -7.6 18.6 252.0 1167 19:15 16.5 -6.1 17.0 229.6 1091 19:30 16.3 -5.7 18.5 261.4 1114 19:45 14.4 -7.6 12.0 291.8 1419 20:00 15.0 -6.1 9.2 258.3 1082 20:15 14.3 -5.8 12.5 283.8 993 20:30 15.1 -4.0 18.4 258.1 989 20:45 15.2 -4.6 18.7 283.2 795 21:00 15.8 -5.6 18.4 265.9 913 21:15 15.9 -5.0 8.9 262.9 889 21:30 16.1 -5.3 14.4 250.3 836 21:45 14.7 -5.7 12.5 245.1 1027 22:00 16.4 -5.6 19.9 271.4 917 22:15 15.0 -5.7 14.3 268.6 883 22:30 15.1 -5.7 11.7 251.5 926 22:45 14.6 -5.6 12.0 259.0 969 23:00 14.7 -5.8 15.8 267.5 1258 23:15 15.8 -5.3 8.9 240.9 1064 23:30 13.7 -6.3 18.8 271.1 1126 23:45 14.6 -5.8 14.2 234.8 1113 00:00 13.9 -6.3 13.3 254.2 995 00:15 13.1 -6.3 12.6 258.0 948 00:30 12.4 -6.3 13.7 261.7 919 00:45 12.2 -6.1 14.3 250.6 946 01:00 11.9 -6.1 14.7 249.2 861 01:15 11.8 -6.1 15.4 254.3 863 332 2.27 01:30 11.9 -6.2 13.0 256.7 786 332 2.51 01:45 11.8 -6.2 16.8 266.0 801 332 2.46 02:00 11.5 -5.7 17.1 266.3 828 332 2.27 02:15 11.7 -5.5 13.5 262.4 856 332 2.36 02:30 11.5 -5.4 14.3 255.1 818 332 2.06 02:45 11.2 -5.0 16.1 264.0 856 332 2.07 03:00 11.4 -4.7 15.6 252.2 828 332 2.13 03:15 11.2 -4.3 15.0 255.6 905 332 1.98 03:30 11.1 -4.3 13.7 263.1 896 332 2.12 03:45 11.1 -4.3 10.5 260.3 830 332 2.44 04:00 11.3 -4.4 10.3 261.8 822 332 2.11 04:15 11.1 -4.6 8.9 258.9 875 332 1.88 04:30 11.0 -4.7 8.9 262.9 798 332 2.09 04:45 11.3 -5.0 9.6 264.1 871 332 2.09 05:00 11.4 -5.3 8.4 257.5 865 332 2.08 05:15 11.3 -5.4 9.4 262.9 815 332 1.63 05:30 11.0 -4.9 13.4 263.0 797 332 2.08 05:45 10.9 -4.8 9.5 276.6 811 332 2.08 06:00 10.9 -4.6 11.7 266.5 907 332 2.22 06:15 10.9 -4.6 13.6 270.4 829 332 2.25 06:30 10.6 -5.0 14.8 272.7 884 332 2.45 06:45 10.7 -5.0 10.0 265.6 891 332 2.02 07:00 11.1 -5.4 13.0 266.0 918 332 1.55 07:15 11.3 -5.3 11.2 264.1 977 332 2.08 07:30 11.3 -5.4 14.8 281.5 959 332 2.06 07:45 11.1 -5.6 10.4 251.3 985 332 2.23 08:00 10.9 -5.6 9.2 264.3 954 332 2.37 08:15 10.8 -5.4 8.9 262.5 936 332 2.25 08:30 10.7 -5.5 9.7 262.1 1040 332 2.43 08:45 10.5 -5.4 6.4 260.4 1003 332 1.66 09:00 10.4 -5.5 5.4 262.8 1043 332 2.10 09:15 10.3 -5.4 2.1 270.3 1106 332 2.13 09:30 10.5 -5.6 3.9 340.1 1080 332 1.94 09:45 10.6 -5.4 7.3 352.4 1197 332 2.16 10:00 10.9 -5.5 11.0 327.3 1239 332 2.14 10:15 10.7 -5.7 8.2 318.1 1236 331 2.08 10:30 10.6 -5.7 7.4 325.0 1227 332 1.83 10:45 10.9 -5.7 5.4 284.8 1254 332 2.27 11:00 10.7 -5.8 8.6 272.8 1280 332 2.08 11:15 10.6 -5.8 1.9 275.2 1287 332 1.94 11:30 10.5 -5.8 4.7 261.3 1252 332 1.56 11:45 10.3 -5.8 2.3 243.9 1252 329 3.26 12:00 10.9 -5.7 1.7 209.0 1213 332 2.02