APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Tuesday December 31, 2002 (MJD 52640) ---=== OBSERVING TEAM ===--- Swing: Steph Snedden Howard Brewington Night: Dan Long Pete Newman ---=== OBSERVING PLAN ===--- Image for the rest of the year and into the next! ---=== OBSERVING SUMMARY ===--- It was another clear night. We started by scanning 82 S. Seeing was marginal and didn't improve. SeeingRun called it bad about half the time, so we decided to do Apache Wheel. After a rocky start with many failures at the start of scans, we finally got a successful binned scan going which we did not end between spokes. It may make for more work in the reduction, but with all the failures at the start of scans, we didn't want to risk not getting the data at all. We completed the following spokes, 90, 105, 120, 135. We got most of 150 before twilight. We also got the rim and hub scans to connect those spokes. It turned out to be an ideal night for Apache Wheel: Marginal to poor seeing, no moon, and clear skies. After the second night of imaging in a row, we are getting low on labeled tapes. There are enough for another night of imaging, but if we image tomorrow ( the 1st ) there will not be enough to do imaging on the night of the 2nd. ---=== OBSERVING LOG ===--- The thermo-king is really cool! At the end of last night we turned on the thermo-king as it was forecast to be below freezing tonight. When Steph went to the enclosure this afternoon the temperature was -2 C and the outside temperature was 6 C. So, it can more than keep up with daytime heating. The satellite loop was looking promising for the night, so we opted to leave the imager on to start the night. We got set up on 82S in twilight. Seeing was marginal, but it was early and so we waited to see if it would improve after the telescope had been outside for a while. It didn't, so we decided to run the Apache Wheel program. Out of six attempts at taking a binned scan, only two succeeded. The others all failed right at the start of the drift. None were due to ptvme failures, at least none that lasted long enough for ptvmeTest to show, or long enough to kill the servers. All failures were tied to ad4. The first failure tonight fit the pattern of prior failures where the .inprog flag was set. Clearing it and trying again got us the first successful binned scan ( the bias ). the next three attempts at starting a binned scan, failed with ad4 being the odd node out ( no blue screen or daqBusy ), but in all three cases the .inprog flag was still zero. After the second failure in a row, we rebooted the astro crate. The third attempt at a scan also failed in the same way as the previous two. This time we went back and tried a normal scan rebooting the astro crate. It worked. We took the time to refocus, as we were in able to check it in this mode. The focus was a about a hundred off, and when in focus the seeing was still poor, so we decided to give the binned scan one more try. It worked! At this point we decided not to end this drift until we were done with Apache Wheel. We hope this doesn't cause too many headaches in the reduction, but we felt it was the only way to ensure we got the data. We had a couple interruptions to the spoke scans. Twice an axis hit a limit during the scan. First it was the rotator on a southward scan which crossed the meridian. To avoid hitting limits as well as the possibility of slewing into the zenith, we should make sure we avoid crossing the meridian during a spoke scan. Tracking stopped at dec of 49 in about frame 164, this time due to the negative azimuth limit being reached. It is apparent that with such long tracks we need to issue track commands with wrap preferences put in to avoid this. Since a second track is issued when reaching the destination to ensure a timely start of the scan, one can look at the TCCPos during the initial slew and append the appropriate wrap option if necessary. A possible clue/workaround for the Landru crashes: Pete rebooted Landru this afternoon and it didn't crash tonight. It may be that whatever is causing the crashes takes time to build up, and a full reboot resets it. Another possible clue is that it has never crashed on Steph, and she never runs Netscape on Landru... endNight rejoiced and very quickly for a night of imaging, since much of the data was binned scan with aldoAnalysis off ( no gangs ). ---=== IMAGING RUN SUMMARY ===--- Run Time Stripe Lambda Last Flavor Comments Start End Begin End Frame ------------------------------------------------------------------------- 3564 22:31Z 22:48Z 100 O 147.23 151.53 40 bias normal bias 3565 00:50Z 02:58Z 82 S -173.77 -141.67 227 science marginal seeing 3567 03:24Z 03:58Z 100 O -139.37 -130.84 38 bias binned bias 3570 04:29Z 04:39Z 100 O -123.13 -120.58 19 ignore failed binned scan 3571 04:49Z 04:54Z 82 S -119.12 -117.87 22 ignore recovering/restoring 3572 04:55Z 05:14Z 82 S -117.43 -112.87 45 ignore " 3573 05:15Z 05:23Z 82 S -112.46 -110.45 27 ignore focus check 3574 05:28Z 12:55Z 100 O -108.34 3.82 321 calibration Apache Wheel ---=== IMAGING RUN DETAILS ===--- Run 3565: 00:47Z 82 S Started during twilight. In focus by frame 34. nu error a bit on the high side at 11.9 Twilight at frame 83, lambda -162.5 bright meteor in dewars 1,2, and 3 - frame 136 r chips. Seeing is marginal. seeingRun vacillating between marginal and bad Acceptable -167.6 ( 49) to -161.4 ( 90) Bad -161.4 ( 90) to -155.8 (127) Acceptable -155.8 (127) to -150.6 (162) Bad -150.6 (162) to -142.0 (219) ended -142 (219) seeing not good enough On to Apache Wheel Run 3566: binned bias. Failed on binned bias right at start of drift. It was the .inprog flag on ad4. The recovery procedure got us back on track. Run 3567: binned bias 03:27Z This one worked. long northward spoke 60 degrees RA Run 3568: Failed binned drift Run 3569: Failed binned drift These two didn't work either. This time the recovery process didn't work. No ptvme problems ( all errno's zero ), but the .inprog flag wasn't 1 either. After two attempts to restart, we killed the servers and rebooted the astro crate ( ad4 was always the only one not to start ). 04:26Z Trying again, now on 75 deg spoke Run 3570: Failed binned drift Spontaneous scan, after restarting iop and rebooting the astrometric crates. Was a goDrift some how queued up, which started as soon as the astro crates came back up? Run 3571: normal drift In an attempt to start from a known state, we return to normal scanning after rebooting the astro crates a second time. It works. Run 3572: normal drift Another normal drift with autoscale set. Run 3573: normal drift Yet another normal drift with aldoAnalysis turned back on so we could focus Run 3574: Back to Apache Wheel 05:27Z A successful start to a binned scan!!!! New strategy: We aren't going to stop this drift, we are simply going to move the telescope without stopping the drift to avoid the ad4 death possibility. The notes below describe where in the run the various parts of the wheel lie. Frame RA,Dec Notes ----- ------ ------------------------------------------------------------ 10 90,-23 Start of good data in long northward spoke. 32 90, 33 Got to alt of 86 deg and rotator hit 1600"/sec but images still looked good. 57 90, 86 Went through pole to 86 to finish this spoke 58-59 Slewing to start of southward short spoke at 105 RA 60 105, 73 start of good data 84 105, 7 rotator abort at -180 degree limit 90 105, 11 Resuming 105 spoke, data good again 104 105,-23 Finished 105 southward spoke 107 87, 0 Start of rim scan to cover 90, 105, 120, and 135 spokes 129 141, 0 End of rim scan 134 120,-22 start of long northward spoke at RA 120 09:00Z standard deviation of cloud cam images went from about 3 to 4, and faint structure was noticeable in the southwest part of the sky, though not where we were Apache Wheeling. 164 120, 49 Azimuth abort due to -150 limit 169 120, 46 Resuming 120 northward spoke 120, 90 Faint structure over whole sky, sdev still less than 5. 189 120, 84 End of 120 spoke 197 86, 45 Start of hub scan, seeing bad enough that even with 1.6 arcsecond pixels, things look a bit soft. 214 160, 65 End of hub scan 217 135, 69 Start of short southward spoke at RA 135. Seeing is better. 255 135,-23 End of short southward spoke at RA 135 cloudcam returned to sub 3 sdev during this scan 258 138, 0 More rim scan to connect to 150 spoke. 265 155, 0 End of added rim scan piece 270 150,-22 Start of long northward spoke at RA 150 279 150, 0 Crossed rim 304 150, 60 Start of twilight 312 150, 80 end due to twilight, sudden high wind, blowing snow ---=== SKIPPY RESULTS ===--- Run Frame nFrames stars muErr muRms nuErr nuRms rot az el --------------------------------------------------------------------------- 3565 30 4 41 0.200 0.603 -11.100 0.636 0.00008 172 57 3565 62 4 58 -0.800 0.079 -11.900 0.141 0.00012 172 57 3565 83 4 46 -1.100 0.103 -11.900 0.096 -0.00036 172 57 3565 82 4 45 -1.000 0.108 -11.900 0.129 -0.00037 172 57 3565 136 4 44 -1.800 0.099 -11.500 0.120 0.00008 172 57 3565 187 4 56 -1.400 0.092 -11.200 0.124 0.00025 172 57 3572 18 4 2 14.400 0.000 8.000 0.000 -0.07694 182 57 ---=== LTMATCH RESULTS ===--- Run Field nFields alt az nGood rowMean rowSig colMean colSig rot ------------------------------------------------------------------------ 3565 39 1 57 8 10 0.534 0.262 -0.819 0.389 0.00275 3565 39 1 57 8 18 0.458 0.353 -0.715 0.499 0.00241 3565 39 1 57 8 16 0.500 0.313 -0.786 0.380 0.00264 3565 39 1 57 8 12 0.554 0.278 -0.894 0.264 0.00301 3565 39 1 57 8 14 0.480 0.278 -0.796 0.276 0.00268 3565 58 1 57 8 12 0.097 0.425 -0.748 0.215 0.00251 3565 58 1 57 8 12 0.051 0.275 -0.417 0.295 0.00140 3565 58 1 57 8 13 0.041 0.330 -0.492 0.238 0.00165 3565 58 1 57 8 7 0.032 0.171 -0.565 0.330 0.00190 3565 58 1 57 8 11 0.191 0.246 -0.199 0.216 0.00067 3565 94 1 57 8 11 0.227 0.160 0.183 0.172 -0.00061 3565 94 1 57 8 9 0.163 0.201 0.373 0.220 -0.00126 3565 94 1 57 8 9 0.266 0.140 0.401 0.273 -0.00135 3565 94 1 57 8 10 0.313 0.125 0.415 0.219 -0.00140 3565 94 1 57 8 5 0.561 0.157 0.394 0.379 -0.00132 3565 110 1 57 8 7 0.862 0.120 0.140 0.228 -0.00047 3565 110 1 57 8 9 0.633 0.216 0.276 0.170 -0.00093 3565 110 1 57 8 13 0.665 0.258 0.293 0.239 -0.00099 3565 110 1 57 8 9 0.625 0.162 0.416 0.174 -0.00140 3565 110 1 57 8 12 0.720 0.160 0.194 0.189 -0.00065 3565 145 1 57 8 14 0.095 0.468 0.629 0.381 -0.00211 3565 145 1 57 8 13 0.277 0.279 0.516 0.449 -0.00174 3565 145 1 57 8 6 0.170 0.441 0.438 0.385 -0.00147 3565 145 1 57 8 11 0.303 0.305 0.416 0.446 -0.00140 3565 145 1 57 8 9 0.130 0.196 0.365 0.520 -0.00123 3565 164 1 57 8 11 0.694 0.137 1.147 0.359 -0.00386 3565 164 1 57 8 17 0.696 0.174 0.790 0.382 -0.00266 3565 164 1 57 8 19 0.595 0.156 0.550 0.419 -0.00185 3565 164 1 57 8 14 0.533 0.152 0.862 0.399 -0.00290 3565 164 1 57 8 16 0.626 0.189 0.828 0.426 -0.00278 3565 200 1 57 8 13 -0.267 0.165 -0.257 0.620 0.00086 3565 200 1 57 8 12 -0.357 0.266 -0.966 0.611 0.00325 3565 200 1 57 8 17 -0.358 0.220 -0.924 0.355 0.00311 3565 200 1 57 8 13 -0.362 0.282 -0.940 0.199 0.00316 3565 200 1 57 8 7 -0.108 0.210 -0.808 0.274 0.00272 ---=== SPECTROSCOPY DATA SUMMARY ===--- UT Exp Time flavor comment (S/N)^2 totals ========================================== b1 r1 b2 r2 ----- sequence 17684, plate -9999 ------- 23:46 17684 0.0 bias ---=== TELESCOPE OFFSETS AND SCALE I ===--- Time Instrument Az Alt Rot Scale pos offset pos offset pos offset ------------------------------------------------------------------------------ ---=== TELESCOPE OFFSETS AND SCALE II ===--- ---=== DATA TAPE SUMMARY ===--- Goes: JL5848,49,50,51,52,53,60 Stays: JL5854,55,56,57,58,59,61 ---=== FOCUS LOG ===--- setmir piston Temp Wind Time Inst scale M1 M2 Foc Az Alt (C) MPH Dir filt fwhm ------------------------------------------------------------------------------ 01:40Z imager 1.00000 0 -627 -523 8 56.9 2.9 16 323 23-i' 1.51 02:39Z imager 1.00000 0 -582 -478 8 56.9 3.7 14 274 23-i' 1.63 ---=== WEATHER LOG ===--- Wind Time Temp F Dewp F MPH Direction Dust DIMM Sky sdev 23:14Z 37 -3 10 344 (NNW) 15 - Clear 23:46Z 37 4 9 323 (NW) 17 - Clear 00:18Z 36 4 17 307 (NW) 19 - Clear 00:50Z 38 8 18 300 (WNW) 15 - Clear 3.0 01:22Z 38 7 14 294 (WNW) 14 - Clear 3.0 01:55Z 37 8 14 283 (WNW) 31 - Clear 2.8 02:27Z 38 9 11 268 (W) 40 - Clear 2.8 02:59Z 38 11 14 265 (W) 19 - Clear 3.2 03:32Z 36 14 11 261 (W) 21 - Clear 3.8 04:04Z 36 18 9 264 (W) 19 - Clear 2.8 04:45Z 34 18 8 256 (WSW) 21 - Clear 3.0 05:18Z 33 18 15 232 (SW) 28 - Clear 2.8 05:50Z 33 18 13 263 (W) 33 - Clear 2.7 06:22Z 31 18 20 294 (WNW) 33 - Clear 2.7 06:54Z 30 19 16 271 (W) 40 - Clear 3.1 07:27Z 30 17 22 297 (WNW) 29 - Clear 2.9 07:59Z 29 15 18 285 (WNW) 59 - Clear 2.9 08:31Z 29 15 16 278 (W) 46 - Clear 2.7 09:03Z 28 15 22 300 (WNW) 56 - Clear 3.9 09:35Z 26 15 16 296 (WNW) 67 - Clear 3.9 10:08Z 25 15 18 316 (NW) 73 - Clear 4.4 10:40Z 24 15 14 341 (NNW) 94 - Clear 3.1 11:12Z 24 15 18 332 (NNW) 96 - Clear 3.0 11:44Z 23 15 7 358 (NNW) 115 - Clear 2.9 12:21Z 22 15 7 19 (NNE) 133 - Clear 2.9 12:53Z 21 15 33 19 (NNE) 115 - Blowing Snow 13:25Z 21 9 16 331 (NNW) 118 - Clear 13:57Z 21 6 22 327 (NNW) 91 - Clear ---=== TELESCOPE STATUS ===--- 23:05Z Doors Open, Fans On 00:10Z Enclosure Open 12:55Z Enclosure Closed, Fans Off Stowed at 30 deg alt, imager installed. Spectro auto-fill connected. Spectrograph dewar 12:30Z Dewar wt 124 lb Imager dewar 12:30Z Dewar wt 97 lb No interlocks bypassed ---=== SOFTWARE USED ===--- IOP/SOP: v3_98_0 Watcher: v2_20_0 MCP: v5_17_0 TPM: tpm_v2_19_0 AstroDa: v14_47 TCC: 2.6.8 sdssProcedures: v1_60 SoS: v4_9_13 hoggPT: v1_5_8 plate-mapper: v4_2_0 ---=== MIRROR NUMBERS ===--- PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A 0.0860 0.0790 Axial B 0.7970 0.7970 Axial C 0.8120 0.8240 Trans D -9.0760 -9.1130 Lateral E 1.8540 1.8870 Lateral F 0.0000 1.4300 GALILS Commanded: 5400. -3700. 900. -200. 31550. 30650. Actual: 5400. -3700. 900. -200. 31550. 30650. 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.: 3.1 Alt.: 30.002707 MIGS TONIGHT NOMINAL Axial A 1.5200 1.5170 Axial B 1.1630 1.1560 Axial C 1.1040 1.0990 Trans D -0.6890 -0.7070 GALILS Commanded: 1619643. 1555290. 1576310. -3400. -7900. Actual: 1619650. 1555250. 1576350. -3400. -7900. SETMIR VALUES SecDesOrient: 1257.00 0.00 -20.00 0.00 130.98 SecOrient: 1257.00 0.01 -20.00 -0.48 130.87 ---=== PROBLEMS IN DETAIL ===---