APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Wednesday December 28, 2005 (MJD 53733) ---=== OBSERVING TEAM ===--- Swing: Dan Long Night: Kaike Pan John Barentine Visitors: French Leger Gus Leger (CU-Boulder) ---=== OBSERVING PLAN ===--- Science! ---=== OBSERVING SUMMARY ===--- A clear night, weather-wise, but one of variable seeing. Obtained signal on one lowz plate (1542) and a regular survey plate (2349), finished a borderline SEGUE faint plate (2340), and finished two regular survey plates (2369 and 2294). We also imaged SEGUE stripe 1260 N between 53.9 < Mu < 117.5 under marginal imaging conditions and would like some feedback on whether the data are any good. We had some serious pointing issues with Plate 2369 (Cart 9). See Log section for details. There was also a momentary power interruption just after 06:00Z that caused the alt and az brakes to come on while were imaging. We recovered from both problems with some effort. ---=== OBSERVING LOG ===--- Afternoon: No problems during the afternoon checkout. Spectrograph focus checked but not changed. Still set for 3 to 4 C. Details in problem section. Night: We began the night with spectroscopy on account of the wind speed and direction (from the NNE). 00:40Z Cart 2 Plate 1542 (tile 9448, lowz74). GSOGTF in bright twilight. Seeing was about where we expected, around 1.6-1.8 arcsec FWHM, but the efficiency was lower than anticipated and variable. A 1200 s exposure gave us a low of 3.4 in r2, meaning that under such conditions we would have to integrate > 10,000 s to reach the target (S/N)^2 for this plate! Got a total of 3600 s of exposure time on this plate for a low (S/N)^2 of 12.0 in r1. We had an SoS warning during this plate: "WARNING: SOS disk /data/spectro/53733 is 96% full". 02:30Z Cart 1 Plate 2340 (tile 8126, seguefaint129). No GSOGTF, but found an fk5InFiber number 10. We start with a (S/N)^2 of 38.5 on this plate. Efficiency improved during this plate and seeing settled down to around 1.2 arcsec FWHM. Brian wanted "another 1/2 hour to 3/4 hour under reasonable conditions" to call this one done, so we gave him 2 x 1200 s for a low (S/N)^2 of 12.1. Further SoS warnings about disk space: "WARNING: SOS disk /data/spectro/53733 is 96% full" "WARNING: SOS disk /data/spectro/spectrologs/53733 is 96% full" With the conditions holding steady, we switched to imaging. We noted during the instChange that the pressure on the empty imager cart was way low (18 psi) compared to nominal (38psi). We gave it plenty of air to get the pressure back up to where it should have been and notified French. He intends to have a look at it during the daytime. 03:55Z Run 5959 (SEGUE stripe 1260 N, startMu=53.9). We were in focus and skippy was happy from the start of this run. We ramped for Frames 36-48 to begin science at Frame 49 (Mu=50). Seeing was variable during this scan but seeingRun never called it bad. At 06:06Z we had some kind of momentary power glitch that caused the lights in the ops building to dim. Simultaneously we heard over the PT intercom a sound like electrical relays buzzing -- possibly arcing (?). Two MCP errors happened simultaneously: azimuth (MGT: bad az amp (0 now 0) (2005-12-29 06:06:08Z sdssmcp): 2005-12-29 06:06:21Z ) rotator (MGT: bad rot amp (1 now 1) (2005-12-29 06:06:10Z sdssmcp): 2005-12-29 06:06:21Z ) I looked over at the monitors and saw the stars suddenly begin trailing. We ended the drift at 06:08Z (Frame 229) with both altitude and azimuth axis brakes having come on. We backed up the telescope to Mu=80 and started a new drift. 06:15Z Run 5960 (SEGUE stripe 1260 N, startMu=80) Skippy was happy and we were in focus from the start of this run. We ramped from Frame 16 (Mu=81.5) to start science at Frame 29 (Mu=83.5). Because of the hiccup described above, and more particularly where in Run 5959 it happened, we were left with only about 11 degrees of this stripe to scan. To meet the minimum frame requirement, we ramped down out of this stripe longer than we would have otherwise. Got one sky warning during science in TPM (skyL (06:30:27Z 2005-12-29 ccd45:)). Seeing just got worse throughout this scan according to seeingRun. We ended the drift at 08:52Z (Frame 258, Mu=117.5). seeingRun called Run 5960 "bad" between Frames 110-125 (95.7 < Mu < 97.9) and from Frame 213 (Mu=110) to the end. 08:55Z Run 5961 (on-telescope bias). We had to eat the time because we intended to switch back to spectrocopy. Switched back to spectroscopy. 09:26Z Cart 9 Plate 2369 (tile 1695, chunk131) No GSOGTF after clearing the calib offsets left over from imaging. Tried an fk5InFiber number 10 without any luck. We had to resort to spiralPattern, where we found the fk5 star with offsets of A=+7, D=-10, R=-10. Issued a new gotoField, applied the suggested offsets and found.... nothing. Tried loading the cart again, applying the offsets, and took a guider frame. Still nothing. Another gotField, another spiralPattern, and we found the star again at A=+9, D=-10, R=-10. Then we realized that for "A" we were actually reading the sequence number of the offset, not the value for A itself, actually. So it was actually A=-10, D=-10, and an R that was rather large, about 450. Still, applying the correct offsets gave us nothing. Bad fiducial crossing? We did a track/mount to 121,30 and then a gotoField, watching the fiducial crossings. All looked okay. We found the fk5 star again with the same suggested offsets. The third time was the proverbial charm and we found (and kept) the fk5 star by 1) clearing offsets, 2) gotoField, 3) fk5InFiber and 4) applying suggested offsets. It's not clear to us why we had such a difficult time making this work. I noticed on the last gotoField that we got a bunch of errors too large to correct in azimuth so I tried to force it; unbeknownst to me, Kaike started the guider right about the same moment I took the semaphore in the MCP. Bad news. "MCP is unavailable". Rebooted the MCP. gotoField with the sticky (correct) offsets and.... nothing. Forced the azimuth fiducial and started over. On a long slew down to 121,30 we got more azimuth errors too large to correct, and altitude bailed out on us totally. TPM reported that the sempahore was not available at the time of the slew, but only for the azimuth axis. TPM also reported that altitude had gone out of closed loop, effectively explaining the abort. Forced the azimuth fiducial again, then gave another try at a track/mount to 121,30. This time we got HUGE errors on altitude, e.g. "Applying correction 3605016 to altitude". We started thinking that something had happened during the power glitch earlier in the night, but remebered that the scope had gone properly up to instChange when we switched back to spectroscopy and we had no trouble getting the pin inserted; i.e., there was no gross pointing error. For the heck of it, we forced the altitude fiducial and tried a new gotoField. This time everything looked copacetic on azimuth but we got no reports of magnasensor crossings in altitude in the murmur log. No GOSGTF. fk5InFiber number 10 gave nothing. New attempt at spiralPattern gave offset suggestions A=0, D=+10. Back to the field, applied suggested offsets. Oh, but the fun was far from over. Kaike's saoDisplay window, to where guider images were being piped, suddenly stopped updating. We did a stopMon/startMon from his sop session but no new window appeared. He logged out of sop altogether and then logged back in. gotoField, fk5InFiber, applied last known good offsets and we had... guide stars. After stuffing the angelic chorus kicking and screaming back into its box, we carried on. Finished this plate in 2 x 900 s and 1 x 750 s exposures. r1 was a little on the low side with total (S/N)^2 but the others were much higher so we called it done. 11:57Z Cart 5 Plate 2294 (tile 1662, chunk123) GSOGTF -- none of the problems like we had on the last plate. Also, altitude fiducial crossings were now giving more reasonable values for errors. We began with a total (S/N)^2 of 11.9 on this plate, and finished it in a single exposure of 900 s. 12:30Z Cart 4 Plate 2349 (tile 1675, chunk123) We started this plate with previous total (S/N)^2 of 2.7 and hoped to get in one exposure before twilight advanced too far. GSOGTF. We obtained one 900 s exposure on this plate. Closed up for the night at 13:05Z endNight rejoiced, and all was right with the world again. ---=== IMAGING RUN SUMMARY ===--- Run Time Stripe Lambda Last Flavor Comments Start End Begin End Frame ------------------------------------------------------------------------- 5957 21:27Z 21:48Z 100 O 128.42 133.66 37 ignore 5958 23:58Z 00:13Z 100 O 166.40 170.01 38 ignore 5959 03:56Z 06:09Z 1260 N -131.31 -97.99 237 science 5960 06:22Z 08:53Z 1260 N -104.76 -66.99 266 science 5961 08:54Z 09:10Z 100 O -59.27 -55.31 41 bias ---=== IMAGING RUN DETAILS ===--- ---=== SKIPPY RESULTS ===--- Run Frame nFrames stars muErr muRms nuErr nuRms rot az el --------------------------------------------------------------------------- 5959 69 4 118 -1.400 0.157 -4.600 0.154 -0.00266 306 59 5959 171 4 156 -4.800 0.155 -5.000 0.171 -0.00681 328 48 5959 225 4 39 -5.900 0.899 -4.600 0.156 -0.00891 337 44 5960 14 4 8 11.400 0.690 -3.500 0.150 0.09627 330 42 5960 65 4 125 -7.700 0.124 3.200 0.185 -0.00554 339 40 5960 151 4 146 -9.700 0.150 3.200 0.165 -0.00458 354 39 5960 201 4 118 -10.400 0.153 2.300 0.193 -0.00337 2 39 5960 254 4 92 -10.900 0.149 1.900 0.219 -0.00136 11 42 ---=== LTMATCH RESULTS ===--- Run Field nFields alt az nGood rowMean rowSig colMean colSig rot ------------------------------------------------------------------------ 5959 78 1 57 230 68 -0.750 0.179 0.768 0.168 -0.00258 5959 78 1 57 230 73 -0.756 0.225 1.043 0.121 -0.00351 5959 78 1 57 230 75 -0.652 0.244 1.216 0.174 -0.00409 5959 78 1 57 230 80 -0.735 0.245 1.467 0.159 -0.00493 5959 78 1 57 230 64 -0.698 0.158 1.326 0.170 -0.00446 5959 96 1 55 226 79 -0.763 0.188 1.032 0.209 -0.00347 5959 96 1 55 226 75 -0.798 0.165 1.320 0.136 -0.00444 5959 96 1 55 226 75 -0.787 0.200 1.505 0.154 -0.00506 5959 96 1 55 226 86 -0.721 0.169 1.713 0.115 -0.00576 5959 96 1 55 226 58 -0.780 0.171 1.799 0.123 -0.00605 5959 182 1 47 209 69 -1.667 0.177 1.221 0.337 -0.00411 5959 182 1 47 209 57 -1.616 0.163 1.513 0.331 -0.00509 5959 182 1 47 209 68 -1.528 0.175 1.560 0.334 -0.00524 5959 182 1 47 209 80 -1.672 0.166 1.683 0.199 -0.00566 5959 182 1 47 209 74 -1.761 0.155 1.969 0.352 -0.00662 5959 200 1 45 206 63 -1.549 0.273 1.738 0.340 -0.00584 5959 200 1 45 206 70 -1.451 0.325 2.035 0.221 -0.00684 5959 200 1 45 206 58 -1.595 0.280 2.094 0.290 -0.00704 5959 200 1 45 206 33 -1.576 0.316 2.244 0.292 -0.00754 5959 200 1 45 206 23 -1.640 0.267 2.441 0.403 -0.00821 5960 212 1 40 175 37 -0.835 0.261 0.740 0.171 -0.00249 5960 212 1 40 175 49 -0.883 0.255 0.902 0.195 -0.00303 5960 212 1 40 175 28 -0.813 0.178 0.866 0.227 -0.00291 5960 212 1 40 175 25 -1.005 0.247 0.900 0.223 -0.00303 5960 212 1 40 175 19 -1.146 0.222 1.567 0.435 -0.00527 5960 229 1 41 172 19 0.167 0.233 1.313 0.356 -0.00441 5960 229 1 41 172 19 0.046 0.190 1.245 0.308 -0.00419 5960 229 1 41 172 22 0.023 0.161 1.432 0.344 -0.00481 5960 229 1 41 172 19 0.048 0.224 1.756 0.207 -0.00590 5960 229 1 41 172 11 -0.190 0.181 1.438 0.265 -0.00483 ---=== SPECTROSCOPY DATA SUMMARY ===--- Summary Checked (y/n): yes QA Procedures Done (y/n): yes UT Exp Time flavor comment (S/N)^2 totals ========================================== b1 r1 b2 r2 ----- sequence 35968, plate 2294 ------- 21:42 35968 10.0 flat 21:44 35969 2.0 arc 21:50 35970 2.1 arc 21:53 35971 2.1 arc ----- sequence 35972, plate 1542 ------- 23:12 35972 10.0 flat 23:14 35973 2.0 arc 23:17 35974 2.1 arc 23:19 35975 2.1 arc ----- sequence 35976, plate -9999 ------- 23:48 35976 0.0 bias 23:52 35977 0.0 bias ----- sequence 35978, plate 1542 ------- 17.4 12.0 19.9 12.1 01:12 35978 10.0 flat 01:14 35979 2.0 arc 01:38 35980 1200.1 target 02:00 35981 1200.1 target 02:23 35982 1200.1 target ----- sequence 35983, plate 2340 ------- 18.8 12.1 22.2 14.2 DONE w/ previous 02:41 35983 10.0 flat signal 02:43 35984 2.0 arc 03:07 35985 1200.1 target 03:29 35986 1200.1 target ----- sequence 35987, plate -9999 ------- 10:42 35987 0.0 bias ----- sequence 35988, plate 2369 ------- 22.8 13.8 25.7 20.4 DONE 10:52 35988 10.0 flat 10:54 35989 2.0 arc 11:13 35990 900.1 target 11:31 35991 900.1 target 11:46 35992 750.1 target ----- sequence 35993, plate 2294 ------- 6.7 4.3 6.1 3.3 DONE w/ previous 11:58 35993 10.0 flat signal 12:01 35994 2.0 arc 12:19 35995 900.1 target ----- sequence 35996, plate 2349 ------- 6.5 3.8 6.2 4.1 12:30 35996 10.0 flat 12:33 35997 2.0 arc 12:51 35998 900.1 target ---=== TELESCOPE OFFSETS AND SCALE I ===--- Time Instrument Az Alt Rot Scale pos offset pos offset pos offset ------------------------------------------------------------------------------ 01:19Z 2 1542 -11.84 -0.0013 56.65 0.0033 169.97 0.0073 1.000030 02:53Z 1 2340 27.01 0.0023 60.08 0.0040 202.47 -0.0020 1.000180 10:58Z 9 2369 -38.05 -0.0004 71.42 0.0033 147.00 0.0175 1.000260 12:06Z 5 2294 277.12 0.0006 62.37 0.0028 112.28 -0.0149 1.000260 12:40Z 4 2349 283.67 -0.0018 66.17 0.0032 116.03 0.0006 1.000230 ---=== 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 ------------------------------------------------------------------------------ 01:20Z 2 1542 1.00003 -296 1006 90 -12 56.6 5.8 13 340 -- 2.2 02:53Z 1 2340 1.00018 -1778 -329 -10 27 60.1 6.7 8 12 -- 1.2 10:58Z 9 2369 1.00026 -2568 -1026 -30 -38 71.4 5.5 16 336 -- 1.2 12:06Z 5 2294 1.00026 -2568 -1009 -30 277 62.3 4.6 14 312 -- 1.8 12:40Z 4 2349 1.00023 -2271 -701 40 284 66.1 4.6 15 314 -- 1.3 ---=== WEATHER LOG ===--- Wind Time Temp F Dewp F MPH Direction Dust DIMM Sky 21:44Z 49 19 19 350 (NNW) 16 - Clear 22:14Z 48 20 14 3 (N) 40 - Clear 22:46Z 47 20 10 357 (NNW) 40 - Clear 23:20Z 45 21 10 12 (NNE) 25 - Clear 23:51Z 43 21 2 19 (NNE) 31 - Clear 00:49Z 41 21 15 11 (N) 35 - Clear 01:19Z 42 21 3 358 (NNW) 47 - Clear 01:51Z 43 21 11 355 (NNW) 71 - Clear 02:23Z 44 20 6 21 (NNE) 82 - Clear 02:53Z 43 20 10 357 (NNW) 93 - Clear 03:24Z 41 20 8 26 (NNE) 133 - Clear 03:56Z 41 21 11 13 (NNE) 123 - Clear 04:26Z 42 20 10 34 (NE) 142 - Clear 04:57Z 43 21 11 345 (NNW) 134 - Clear 05:28Z 42 20 10 16 (NNE) 231 - Clear 05:59Z 43 21 6 0 (N) 90 - Clear 06:29Z 44 20 16 355 (NNW) 81 - Clear 07:02Z 43 20 14 6 (N) 53 - Clear 07:32Z 44 20 14 354 (NNW) 38 - Clear 08:02Z 44 21 7 0 (N) 47 - Clear 08:33Z 44 21 6 14 (NNE) 19 - Clear 09:04Z 44 21 8 3 (N) 26 - Clear 09:35Z 43 21 13 347 (NNW) 53 - Clear 10:06Z 42 21 8 347 (NNW) 55 - Clear 10:37Z 42 21 10 336 (NNW) 37 - Clear 11:07Z 42 20 14 314 (NW) 44 - Clear 11:39Z 40 19 7 282 (WNW) 116 - Clear 12:10Z 40 19 14 328 (NNW) 130 - Clear 12:40Z 40 20 10 310 (NW) 128 - Clear 13:12Z 41 22 17 295 (WNW) 107 - Clear ---=== TELESCOPE STATUS ===--- 00:20Z Fans and blowers on, doors open, enclosure off 13:05Z Fans off, louvers and doors closed, enclosure on Telescope parked at 121,30 with Cart 2 (Plate 1542) mounted Counterweights at 245 Spectro autofill reconnected No interlocks bypassed Dewar weights at 13:23Z Imager: 249lbs 26psi Spectro: 95lbs 18psi ---=== SOFTWARE USED ===--- IOP/SOP: v4_9_2a Watcher: v2_31_0 MCP: v5_26_0 TPM: tpm_v3_1_0 AstroDa: v15_10 TCC: TCC 2.7.2.1 August 6 2004 sdssProcedures: v2_06 SoS: v4_10_7 hoggPT: v1_6_9 plate-mapper: v4_3_1 ---=== MIRROR NUMBERS ===--- PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A -5.8370 -5.8440 Axial B -5.6790 -5.6770 Axial C 0.9410 0.9420 Trans D -9.9990 -9.9940 Lateral E 10.3505 10.3759 Lateral F 11.9380 11.9380 GALILS Commanded: 4700. -2450. 3000. -7800. 3300. 3000. Actual: 4711. -2457. 2997. -7825. 3296. 3024. SETMIR VALUES PriDesOrient: 0.00 -1.68 7.05 385.25 92.02 PriOrient: 0.00 -1.52 7.02 384.99 93.81 SECONDARY: ---------- Focus: 0.00 Air Temp.: 9.0 Alt.: 29.960716 MIGS TONIGHT NOMINAL Axial A 1.5390 1.5420 Axial B 1.0580 1.0470 Axial C 1.1740 1.1650 Trans D -0.1140 -0.1240 GALILS Commanded: 1594439. 1601740. 1551233. -6800. -5900. Actual: 1593447. 1603642. 1554316. -6820. -5882. SETMIR VALUES SecDesOrient: 1257.00 15.87 0.00 -50.00 136.76 SecOrient: 1255.94 16.60 -1.05 -50.24 136.25 ---=== PROBLEMS IN DETAIL ===--- Spectro Focus Details: sp1 sp2 Coll_motor_A 6000 -4490 Coll_motor_B 6000 -7770 Coll_motor_C 6000 -7100 im> caget tpm_TM_PMSSAvg tpm_TM_TelairAvg.VALA tpm_TM_PMSSAvg 5.031 tpm_TM_TelairAvg.VALA 6.350 b1 r1 b2 r2 Mean Offset .40 -.13 .06 -.11 Recommended Piston 1214 1030 Indicated best focus temperature between 3 and 4 C Note that when collimate is run in version v5_1_0 there is a warning message "speclog_version: Command not found." It doesn't appear to effect the calculations but is not seen in v4_10_7.