APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Friday September 19, 2003 (MJD 52902) ---=== OBSERVING TEAM ===--- Scot Kleinman Dan Long Mike Harvanek (swing) ---=== OBSERVING PLAN ===--- Science! ---=== OBSERVING SUMMARY ===--- We think the Taurus plate (1256) is done, but SoS was quite unhappy with it. See our discussion in the log section and PLEASE LOOK AT THIS PLATE'S DATA ASAP so we may declare it done and have it unplugged it indeed it is done. Is this going to be a problem with other Taurus plates as well? Thanks. We got the first 3 requested oblique scans done in good conditions. We took the first scan twice - once when the cloud camera was reading ~10 and once when it was between 6-8. We'd like BOTH runs reduced and an analysis on whether or not the "10" run is photometric or not. This will help us calibrate the photometricity level of the cloud camera. We finished two plates, may have finished a third, and got data on a fourth. The DIMM lost Polaris sometime less than two hours after we started it. ---=== OBSERVING LOG ===--- Mike adjusted the spectro collimation during the afternoon. Here are the pertinent numbers: T = 13.0 Final sp1 positions Coll_motor_A -8165 Coll_motor_B -8365 Coll_motor_C -7452 Final sp2 positions Coll_motor_A -6824 Coll_motor_B -7044 Coll_motor_C -6943 Nothing else to report from the afternoon. Night Report ------------- The night started photometric, so we begin with an early track to the first oblique scan (the one labeled Stripe 201 S) so we'd hit the target start at twilight. ltMatch showed a rotator offset - equal to the calib offset we had in from last night, so we cleared offsets. This was done around frame 40, which was still in twilight. Run 4114. 02:30Z: Frame 61 - tccMon reads 35.2 deg dec- start of requested oblique scan 02:46Z: Frame 89 - we note the cloud camera is now (slightly) over 10 and maybe has been for a few min. The cloud camera hovered around 10 the rest of the scan, sometimes lower, sometimes a bit higher. In consultation with Steve Kent, we decided to repeat the scan so a) we could see if conditions improve before swapping instruments, b) see if conditions improved during the repeat scan so we could get a good oblique scan, and c) take a second scan of the same area so we can evaluate the photometricity with this level of cloud camera activity. We ended this first scan at frame 138. Run 4115: 03:19Z : we started the repeat of the first oblique scan. Data are good after ramp up. (Cloud camera read 7.9 at the start). The cloud camera stayed between around 6 and 8 this scan. We stopped it at frame 79 at a dec of 44.0. We're calling this scan good. Run 41116 04:09Z: Oblique scan 2 - cloud camera read 6.6 at start) Gangs stopped transferring around 04:25Z. We started a new teamster with no success. We ended the drift at 04:55Z, frame 87. Just then, gangs started transferring again. This scan had a TON of nebulosity - it was quite a treat to watch it go by. BTW, we started the DIMM at the start of the night, but it lost Polaris sometime before 04:20Z or so. We had some trouble starting the next run. goDrift reported "lock operation failed" for beginData. Three tries and it finally worked. (These attempts ate up run numbers 4117 and 4118.) Run 4119: 05:04Z: Oblique scan 3 - cloud camera at 8.6. We stopped this run at frame 80, dec=44 at 05:46Z. There was no more time to start the last oblique scan, so we went on to a repeat Southern scan. Run 4120: 05:52Z 82N starting at lambda=159.8 Good data at lambda=162 at frame 22, but seeing was never good, so we stopped the run shortly and switched to spectroscopy. Clouds and humidity increased during the instrument change. 06:38Z cart 6, plate 1475 (merged). GSOTGTF. We got a finishing S/N of 26.0, but only in two exposures before the plate's time had passed, so off to: 07:42Z cart 1 plate 1091 (merged). GSOTGTF. We finished this partially done plate with two additional exposures. 08:40Z cart 5 plate 1131 (Munn). GSOTGTF. R2 had a significantly lower S/N than did the other chips. We could find no real reason why, so just continued observing until R2 had adequate S/N. Done in 4 exposures for 70+m. 10:30Z cart 4 plate 1256 (Taurus). GSOTGTF. The first 900s exposure on this plate resulted in a S/N 8.0 in B1, but 0.0 in R1. Our best guess is that this is because there are only 3 20th mag objects on this plate, probably none in R1 and thus, SoS is very confused. This raises the point that SoS is very finely tuned for survey plates and often gives misleading results for non-survey plates. We should consider how/if we want to deal with this. We think we finished this plate based on the b S/N, but the red S/N values were much lower. We'd really like someone to look at the data on this plate and let us know if it is done and to comment on what we can expect from the rest of the Taurus plates. ---=== IMAGING RUN SUMMARY ===--- Run Time Stripe Lambda Last Flavor Comments Start End Begin End Frame ------------------------------------------------------------------------- 4112 22:56Z 23:15Z 100 O 51.59 56.33 46 ignore 4113 01:03Z 01:19Z 100 O 83.57 87.48 40 bias 4114 engineering oblique scan 1 4115 engineering oblique scan 1 4116 04:07Z 04:55Z 100 O 129.58 141.81 95 engineering oblique scan 2 4119 05:03Z 05:47Z 100 O 143.63 154.74 88 engineering oblique scan 3 4120 05:52Z 06:13Z 82 N 159.71 165.06 50 ignore bad seeing ---=== IMAGING RUN DETAILS ===--- ---=== SKIPPY RESULTS ===--- Run Frame nFrames stars muErr muRms nuErr nuRms rot az el --------------------------------------------------------------------------- 4120 14 4 37 -0.700 0.156 0.400 0.174 -0.00116 173 57 ---=== LTMATCH RESULTS ===--- Run Field nFields alt az nGood rowMean rowSig colMean colSig rot ------------------------------------------------------------------------ 4114 22 1 69 89 75 2.055 0.158 -7.678 0.071 0.02582 4114 22 1 69 89 48 1.792 0.193 -7.591 0.126 0.02552 4114 22 1 69 89 66 1.681 0.167 -7.583 0.175 0.02550 4114 22 1 69 89 69 1.317 0.197 -7.424 0.168 0.02496 4114 22 1 69 89 75 0.878 0.213 -7.331 0.203 0.02465 4114 44 1 72 98 78 3.285 0.220 -0.789 0.190 0.00265 4114 44 1 72 98 64 3.065 0.243 -0.704 0.231 0.00237 4114 44 1 72 98 83 2.783 0.231 -0.752 0.264 0.00253 4114 44 1 72 98 74 2.363 0.201 -0.720 0.215 0.00242 4114 44 1 72 98 71 1.942 0.170 -0.739 0.208 0.00249 4120 25 1 57 7 7 0.658 0.267 0.301 0.382 -0.00101 4120 25 1 57 7 8 0.372 0.442 0.227 0.167 -0.00076 4120 25 1 57 7 18 0.371 0.341 0.410 0.212 -0.00138 4120 25 1 57 7 11 0.893 2.727 1.069 1.951 -0.00360 4120 25 1 57 7 15 -0.133 0.376 0.457 0.328 -0.00154 ---=== SPECTROSCOPY DATA SUMMARY ===--- Summary Checked (y/n): y QA Procedures Done (y/n): y UT Exp Time flavor comment (S/N)^2 totals ========================================== b1 r1 b2 r2 ----- sequence 22335, plate -9999 ------- 22:52 22335 0.0 bias ----- sequence 22336, plate 1472 ------- 23:11 22336 2.1 arc test 23:14 22337 2.1 arc test 23:21 22338 10.0 flat test 23:26 22339 2.1 arc test 23:28 22340 2.1 arc test 23:43 22341 10.0 flat test 23:46 22342 2.1 arc test 23:49 22343 2.1 arc test ----- sequence 22344, plate -9999 ------- 00:16 22344 0.0 bias 01:21 22345 0.0 bias ----- sequence 22346, plate 1475 ------- 06:51 22346 10.0 flat 06:53 22347 2.0 arc 07:11 22348 900.1 target 07:26 22349 720.1 target 07:33 22350 240.0 smear ----- sequence 22351, plate 1091 ------- 07:48 22351 10.0 flat 07:50 22352 2.0 arc 08:07 22353 800.1 target 08:25 22354 900.1 target 08:32 22355 240.0 smear ----- sequence 22356, plate 1131 ------- 08:44 22356 10.0 flat 08:46 22357 2.0 arc 09:04 22358 900.1 target 09:22 22359 900.1 target 09:45 22360 1200.1 target 10:09 22361 1300.1 target 10:17 22362 240.0 smear 10:20 22363 10.0 flat 10:22 22364 2.0 arc ----- sequence 22365, plate 1256 ------- 10:39 22365 10.0 flat 10:41 22366 2.0 arc 10:59 22367 900.1 target 11:17 22368 900.1 target 11:34 22369 900.1 target 11:42 22370 240.0 smear ---=== TELESCOPE OFFSETS AND SCALE I ===--- Time Instrument Az Alt Rot Scale pos offset pos offset pos offset ------------------------------------------------------------------------------ 02:32Z imager 106.42 0.0000 74.33 0.0000 95.61 0.0000 1.000000 06:48Z 6-1475 -38.48 0.0027 50.58 0.0019 148.38 -0.0046 1.000070 07:46Z 1-1091 -17.73 0.0022 55.96 0.0018 165.08 -0.0075 1.000200 08:42Z 5-1131 -19.42 0.0013 55.64 0.0011 163.68 -0.0157 1.000140 10:36Z 4-1256 67.84 -0.0003 73.63 0.0014 239.59 0.0264 1.000460 ---=== 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 ------------------------------------------------------------------------------ 02:32Z imager 1.00000 0 -351 -211 106 74.3 11.8 8 176 23-i' 1.23 05:29Z imager 1.00000 0 -378 -247 243 68.2 12.5 10 181 23-i' 1.52 06:48Z 6-1475 1.00007 -691 682 75 -38 50.6 11.3 9 179 gdr 1.3 07:46Z 1-1091 1.00020 -1974 -497 -25 -18 56.0 11.8 10 182 gdr 1.4 08:42Z 5-1131 1.00014 -1381 -5 -25 -19 55.6 11.6 8 181 gdr 1.4 10:36Z 4-1256 1.00046 -4542 -2584 50 68 73.6 11.8 7 187 gdr 1.3 ---=== WEATHER LOG ===--- Wind Time Temp F Dewp F MPH Direction Dust DIMM Sky 22:30Z 61 41 9 208 (SSW) 1332 - 23:01Z 61 43 11 217 (SW) 1124 - 23:32Z 61 43 11 206 (SSW) 1236 - 00:03Z 59 43 2 185 (S) 1179 - 00:35Z 58 42 4 181 (S) 1082 - 01:07Z 54 42 7 171 (S) 1135 - 01:44Z 53 42 9 157 (SSE) 1092 - 02:16Z 53 42 8 177 (S) 1025 - 02:48Z 53 42 9 178 (S) 1089 - 03:21Z 53 42 10 173 (S) 1018 - 03:53Z 54 42 13 179 (S) 852 - 04:25Z 53 41 11 178 (S) 912 - 04:57Z 53 41 9 175 (S) 897 - 05:27Z 54 37 11 179 (S) 964 - 05:58Z 52 41 10 167 (SSE) 863 - 06:30Z 51 41 9 176 (S) 838 - 07:00Z 52 40 7 182 (S) 847 - 07:30Z 53 39 9 181 (S) 748 - 08:00Z 53 39 9 182 (S) 737 - 08:33Z 52 40 8 178 (S) 660 - 09:03Z 53 40 8 181 (S) 658 - 09:36Z 52 40 6 179 (S) 641 - 10:09Z 53 39 8 181 (S) 575 - 10:42Z 52 39 7 183 (S) 592 - 11:12Z 52 38 6 195 (SSW) 629 - 11:42Z 52 37 8 179 (S) 683 - ---=== TELESCOPE STATUS ===--- 00:15Z Enclosure doors opened, fans and blowers on, louvers opened. 01:00Z Doors closed (to take an on-telescope bias). 01:25Z Doors opened, enclosure off. 12:00Z Closed, fans off etc. No interlocks bypassed. ---=== SOFTWARE USED ===--- IOP/SOP: v3_119_0 Watcher: v2_24_0 MCP: v5_20_0 TPM: tpm_v2_32_0 - now declared current AstroDa: v14_47 TCC: 2.7.1 sdssProcedures: v1_74 tccMon: v2_2 SoS: v4_9_13 hoggPT: v1_6_9 plate-mapper: v4_3_1 ---=== MIRROR NUMBERS ===--- PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A 0.5460 0.5460 Axial B 0.6320 0.6290 Axial C 1.0900 1.0900 Trans D -8.5760 -8.5750 Lateral E 10.8839 10.9093 Lateral F 10.8585 10.8712 GALILS Commanded: 4600. -2850. 850. -7250. 19000. 18450. Actual: 4600. -2866. 866. -7275. 19011. 18425. SETMIR VALUES PriDesOrient: 0.00 0.00 15.20 829.90 1.60 PriOrient: 0.00 0.00 14.91 830.49 3.19 SECONDARY: ---------- Focus: 0.00 Air Temp.: 17.9 Alt.: 30.393903 MIGS TONIGHT NOMINAL Axial A 1.5100 1.5100 Axial B 1.1000 1.0990 Axial C 1.1140 1.1160 Trans D -0.8230 -0.8210 GALILS Commanded: 1628594. 1548216. 1574490. -3900. -8750. Actual: 1628641. 1548187. 1574504. -3899. -8726. SETMIR VALUES SecDesOrient: 1257.00 0.00 -25.00 0.00 146.27 SecOrient: 1256.99 0.01 -24.98 0.28 146.55 ---=== PROBLEMS IN DETAIL ===--- Sample TPM Errors ------------------ m1 temp (Excessive Temperature Radial Gradient:: 2003-09-20 01:56:22Z m2 temp (Excessive Front-Back Temperature Differential: 2003-09-20 03:08:53Z) m2 mig (Communications Fault: 2003-09-20 02:14:57Z) All these repeated throughout the night. sdsshost -------- At one point early in the night, we lost the ability to ssh into 'host. Craig looked at it and tickled the ssh daemon and all was well, although Craig was not very happy with the solution.