APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Saturday November 2, 2002 (MJD 52581) ---=== OBSERVING TEAM ===--- Night: Stephanie Snedden, Pete Newman Visitors: Mike Carr (UW); two guys from Project Astro ---=== OBSERVING PLAN ===--- Science. ---=== OBSERVING SUMMARY ===--- Lost the first 4 hours to clouds, then spectroscopy with good seeing and occasional clouds. Finished plates 929, 1119, 1151 and 895 and got good data on plate 1143. Two minor problems. ---=== OBSERVING LOG ===--- Overcast at sunset (around 00:15Z) from a weather flow coming from the SW, continued variable cloud until ~04:30Z when it cleared considerably as the flow moved further north, until ~10:00Z when more cloud developed. Seeing was good all night. We homed and relaxed the mirrors. The primary numbers looked a little further from the nomminal values than usual, and we were waiting on clouds in any case. We may have seen a small problem with secondary mirror actuator B - see problems section #1 for details. We found that the rubber seal on the east side of the doghouse between the doghouse and the penthouse was pulled out along most of it's length. We tucked that back in by hand, but if it is supposed to be glued in place it needs repair. We waited on clouds after opening until ~01:35 when we entered clearer sky and were able to acquire guide stars. Observing sequence: 01:31Z Plate 1143, cartridge 7. Not done in 4 exposures (1 useful). SoS reported WSIGMA=1.06 for camera r1 on the pre-science arc exposure. A second set of arc exposures were just within limits. First three attempts at science exposures were not useful due to continued variable cloud, but after adjusting the sp1 collimation and the clouds cleared considerably, we got one good exposure before running off the design time for the plate. 04:48Z Plate 1119, cartridge 3. Done in 3 exposures. This is one of the "Munn49" series. The S/N plot, http://sos.apo.nmsu.edu/snplot-52581-1119.ps, shows an non-standard distribution of magnitudes, in particular with no objects fainter than r ~ 18.5, and we think the r-camera S/N values reported by SoS under-estimate the actual signal recorded. 06:37Z Plate 1155, cartridge 8. Done in 3 exposures when combined with data taken on MJD 52579. 08:47Z Plate 929, cartridge 5. Done in 3 exposures. Needed to clear offsets to find guide stars. 10:20Z Plate 895, cartridge 9. Done in 4 exposure. Camera r2 in exposure 16799 has the most amazing glancing cosmic ray that either of us have seen crossing a good fraction of the chip. We hammered on this field for longer than necessary as there were no other plates available. endNight ran ok. ---=== IMAGING RUN SUMMARY ===--- Run Time Stripe Lambda Last Flavor Comments Start End Begin End Frame ------------------------------------------------------------------------- 3441 23:14Z 23:28Z 100 O 99.73 103.28 38 ignore ---=== IMAGING RUN DETAILS ===--- ---=== SKIPPY RESULTS ===--- Run Frame nFrames stars muErr muRms nuErr nuRms rot az el --------------------------------------------------------------------------- ---=== LTMATCH RESULTS ===--- Run Field nFields alt az nGood rowMean rowSig colMean colSig rot ------------------------------------------------------------------------ ---=== SPECTROSCOPY DATA SUMMARY ===--- UT Exp Time flavor comment (S/N)^2 totals ========================================== b1 r1 b2 r2 ----- sequence 16755, plate 1143 ------- NOT DONE 01:46 16755 10.0 flat 01:48 16756 2.0 arc WSIMGA out of tolerance 02:12 16757 1200.1 target Useless S/N 02:41 16758 1500.1 target Useless S/N 02:47 16759 10.0 flat 02:50 16760 2.0 arc WSIGMA within tolerance 03:21 16761 1200.1 target Useless S/N 03:30 16762 2.1 arc Recollimation 03:32 16763 2.1 arc 03:48 16764 2.1 arc 03:50 16765 2.1 arc 03:58 16766 10.0 flat More preCalibs 04:01 16767 2.0 arc 04:29 16768 1200.1 target 3.6 3.3 4.4 3.1 04:37 16769 240.0 smear 04:40 16770 10.0 flat 04:43 16771 2.0 arc ----- sequence 16772, plate 1119 ------- 32.4 22.7 24.4 13.5 DONE 04:55 16772 10.0 flat 04:57 16773 2.0 arc 05:30 16774 1500.1 target 05:55 16775 1200.1 target 06:18 16776 1200.1 target 06:26 16777 240.0 smear 06:30 16778 10.0 flat 06:33 16779 2.0 arc ----- sequence 16780, plate 1155 ------- 29.7 26.1 22.7 32.6 DONE 06:46 16780 10.0 flat 06:48 16781 2.0 arc 07:14 16782 1200.1 target 07:37 16783 1200.1 target 08:00 16784 1200.1 target 08:35 16785 1800.1 target 08:42 16786 240.0 smear ----- sequence 16787, plate 929 ------- 23.8 19.0 23.7 18.9 DONE 08:57 16787 10.0 flat 09:00 16788 2.0 arc 09:25 16789 1200.1 target 09:48 16790 1200.1 target 10:06 16791 900.1 target 10:14 16792 240.0 smear ----- sequence 16793, plate 895 ------- 32.4 19.4 30.7 21.5 DONE 10:30 16793 10.0 flat 10:33 16794 2.0 arc 10:58 16795 900.1 target 11:17 16796 900.1 target 11:35 16797 900.1 target 11:42 16798 240.0 smear 12:01 16799 900.1 target 12:08 16800 10.0 flat 12:10 16801 2.0 arc ---=== TELESCOPE OFFSETS AND SCALE I ===--- Time Instrument Az Alt Rot Scale pos offset pos offset pos offset ------------------------------------------------------------------------------ 01:53Z 7 1143 19.69 0.0017 55.59 -0.0009 196.36 -0.0185 1.000100 04:09Z 7 1143 -38.49 0.0017 50.56 -0.0009 148.35 -0.0185 1.000030 05:06Z 3 1119 -14.11 0.0033 56.38 0.0005 168.11 0.0082 0.999990 10:36Z 9 895 117.39 -0.0054 62.35 -0.0008 -83.03 0.0038 1.000340 ---=== TELESCOPE OFFSETS AND SCALE II ===--- ---=== DATA TAPE SUMMARY ===--- Goes: JL Stays: JL ---=== FOCUS LOG ===--- setmir piston Temp Wind Time Inst scale M1 M2 Foc Az Alt (C) MPH Dir filt fwhm ------------------------------------------------------------------------------ 01:53Z 7 1143 1.00010 -986 347 0 20 55.6 4.3 7 272 BG38 1.6 04:09Z 7 1143 1.00003 -296 834 -100 -38 50.6 3.6 12 231 BG38 1.4 05:05Z 3 1119 0.99999 99 1143 -100 -14 56.4 4.5 14 249 BG38 2.5 10:58Z 9 895 1.00032 -3159 -1728 -250 119 66.5 5.7 15 303 BG38 1.4 ---=== WEATHER LOG ===--- Wind Time Temp F Dewp F MPH Direction Dust DIMM Sky 23:32Z 41 31 6 269 (W) 201 - Heavy cloud 00:04Z 41 23 4 267 (W) 222 - " 00:36Z 40 28 8 264 (W) 284 - " 01:05Z 39 31 5 266 (W) 361 - " 01:37Z 39 32 7 270 (W) 489 - " 02:09Z 39 32 11 271 (W) 464 - " 02:42Z 39 32 6 268 (W) 467 - " 03:14Z 40 31 12 270 (W) 418 - " 03:45Z 39 31 8 265 (W) 386 - " 04:18Z 39 30 15 236 (SW) 350 - Patchy cloud 04:50Z 39 25 11 264 (W) 226 - " 05:22Z 41 21 11 265 (W) 229 - " 05:55Z 42 18 20 265 (W) 172 - " 06:26Z 42 20 15 262 (W) 210 - Mostly clear 06:58Z 42 19 11 273 (W) 207 - " 07:28Z 42 19 15 278 (W) 225 - " 08:00Z 42 21 13 270 (W) 279 - " 08:33Z 42 21 17 281 (W) 226 - " 09:04Z 42 20 13 283 (WNW) 259 - Patchy cloud 09:37Z 42 17 12 274 (W) 232 - " 10:09Z 42 17 15 301 (WNW) 188 - " 10:42Z 42 21 11 302 (WNW) 239 - " 11:13Z 42 21 14 286 (WNW) 255 - 11:43Z 42 22 16 300 (WNW) 278 - 12:27Z 43 24 14 283 (WNW) 334 - ---=== TELESCOPE STATUS ===--- 23:30Z Fans on, doors open 00:15Z Enclosure off 12:20Z Enclosure on, fans off Status at 12:45Z: Telescope stowed at: 30 deg Instrument mounted: Cartridge 4 Counterweights at: 290 Autofill systems: On 180L LN2 dewar weights: Spectro 221 lb Imager 120 lb Interlocks bypassed: Alt slip, az slip. Slip detection tripped: Rot slip, reset at 01:00Z ---=== SOFTWARE USED ===--- IOP/SOP: v3_91_0 Watcher: v2_19_0 MCP: v5_13_5 TPM: tpm_v2_17_0 AstroDa: v14_47 TCC: 2.6.5 sdssProcedures: 1_54 SoS: v4_9_10 hoggPT: v1_5_8 plate-mapper: v4_1_0 ---=== MIRROR NUMBERS ===--- Before home/relax: PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A 0.0820 0.0790 Axial B 0.7950 0.7970 Axial C 0.8280 0.8240 Trans D -9.0880 -9.1130 Lateral E 1.8590 1.8870 Lateral F 1.4120 1.4300 GALILS Commanded: 5400. -3700. 900. -200. 31550. 30650. Actual: 5377. -3699. 923. -208. 31535. 30647. SETMIR VALUES PriDesOrient: 0.00 -11.80 23.00 1256.90 642.10 PriOrient: 0.00 -12.16 22.81 1257.41 642.19 SECONDARY: ---------- Focus: 0.00 Air Temp.: 4.5 Alt.: 29.986323 MIGS TONIGHT NOMINAL Axial A 1.5120 1.5170 Axial B 1.1450 1.1560 Axial C 1.0940 1.0990 Trans D -0.7090 -0.7070 GALILS Commanded: 1619573. 1555542. 1576304. -3400. -7900. Actual: 1619650. 1555250. 1576350. -3400. -7900. SETMIR VALUES SecDesOrient: 1257.00 0.00 -20.00 0.00 130.98 SecOrient: 1257.05 0.06 -19.91 -0.42 130.84 After home/relax: PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A 0.0850 0.0790 Axial B 0.8060 0.7970 Axial C 0.8230 0.8240 Trans D -9.0730 -9.1130 Lateral E 1.8320 1.8870 Lateral F 1.3960 1.4300 GALILS Commanded: 5400. -3700. 900. -200. 31550. 30650. Actual: 5377. -3699. 923. -208. 31535. 30647. SETMIR VALUES PriDesOrient: 0.00 -11.80 23.00 1256.90 642.10 PriOrient: 0.00 -12.16 22.81 1257.41 642.19 SECONDARY: ---------- Focus: 0.00 Air Temp.: 4.1 Alt.: 29.999993 MIGS TONIGHT NOMINAL Axial A 1.5140 1.5170 Axial B 1.1540 1.1560 Axial C 1.0960 1.0990 Trans D -0.6950 -0.7070 GALILS Commanded: 1622981. 1554584. 1575643. -3400. -7900. Actual: 1619636. 1555273. 1576326. -3383. -7925. SETMIR VALUES SecDesOrient: 1257.00 0.00 -20.00 0.00 130.98 SecOrient: 1256.93 -0.21 -20.20 -0.61 131.02 ---=== PROBLEMS IN DETAIL ===--- Problem #1 - Secondary actuator B did not find reverse limit switch first try ----------------------------------------------------------------------------- While homing the secondary we saw the following time-out while homing axis B: :A=0;: B=0;: C=0;: XQ#HOME : 0363.1, 0363.1, 0363.1, 0000.0, 0000.0 max sec to find reverse limit switch Reverse limit switch not depressed for axes: 0, 1, 0, 0, 0 - trying again 0000.6, 0363.1, 0000.6, 0000.0, 0000.0 max sec to find reverse limit switch 0030.5, 0030.5, 0030.5, 0000.0, 0000.0 max sec to find home switch 0008.6, 0008.6, 0008.6, 0000.0, 0000.0 sec to move away from home switch Finding next full step Re-homing a second time, we had no problems. Note that we started the first homing from scale=1, focus=0 (for inst=spectro), set up to take mirror numbers (see mirrros section). We _hope_ this was an isolated time-out. Problem #2 - Change of exposure time did not get recorded --------------------------------------------------------- On plate 1119, we changed the exposure time twice on the second exposure (exp number 16775), but SoS reported only the first change (i.e. 1200 seconds). We used apofix to correct it in the headers on SoS. Below is a cut from the SOP GUI log covering the commands. 05:31:10 32809 SOPGUI: doNextScience 1500 05:33:50 32809 SOPGUI: pauseStare 05:35:08 32809 SOPGUI: pauseStare 05:35:12 32809 SOPGUI: resumeStare 1200 05:36:44 32809 SOPGUI: resumeStare 1500 Note that we did NOT issue a pauseStare between the two resumeStares, but we're pretty sure the exposure did indeed run for 1500 seconds.