APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Tuesday April 8, 2003 (MJD 52738) ---=== OBSERVING TEAM ===--- swing: Atsuko Kleinman night: Howard Brewington Steph Snedden support: French Leger visitors: Jim Annis (FNAL) Hubert Lampeitl (FNAL) ---=== OBSERVING PLAN ===--- Science! Shakeup cancelled to allow observers to get to the collaboration meeting on time. ---=== OBSERVING SUMMARY ===--- Despite poor seeing, three plates declared done after moonset. ---=== OBSERVING LOG ===--- Afternoon --------------- Spectrographs are in focus. Because of the upcoming SDSS Collaboration meeting, it was agreed to skip shake items so one of the observers could go home, feed her cats and do some laundry before heading out to the meeting. During the early part of the evening, Howard tried to finish cartridge 1 from last night. Unfortunately, bad seeing and Moon kept the S/N below useful values. While unmounting cartridge 1, Howard had trouble getting all three latches to unlatch. See the problems section for details. The seeing was still poor, so as the Moon set, we continued with spectroscopy. 07:48Z CARTRIDGE 6, PLATE 1280 Needed an FK5 star to find the field. Seeing was a little better than earlier in the evening. That coupled with the lack of Moon allowed us to get useful signal. Plate completed with a total exposure of 2700 sec. 08:54Z CARTRIDGE 9, PLATE 1167 Guide stars on slew. Declared this plate done with a total exposure of 2600 sec. 10:23Z CARTRIDGE 4, PLATE 1291 Needed an FK5 to find the field. Declared this plate done with a total exposure of 2100 sec. Smear and post-cals ran into twilight. EndNight finished successfully. ---=== IMAGING RUN SUMMARY ===--- Run Time Stripe Lambda Last Flavor Comments Start End Begin End Frame ------------------------------------------------------------------------- 3851 22:30Z 22:53Z 100 O -116.45 -110.61 53 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 ===--- 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 20346, plate 1296 ------- 22:27 20346 0.0 bias 22:39 20347 10.0 flat 22:43 20348 2.1 arc 22:45 20349 2.1 arc 02:15 20351 0.0 bias 02:37 20352 10.0 flat 02:39 20353 2.0 arc 03:01 20354 960.1 target no useful S/N 03:41 20355 1500.1 target " ----- sequence 20356, plate -9999 ------- 06:50 20356 0.0 bias ----- sequence 20357, plate 1280 ------- 07:33 20357 10.0 flat 07:36 20358 2.0 arc 08:02 20359 1200.1 target 08:20 20360 900.1 target 08:33 20361 600.1 target 08:41 20362 240.0 smear 08:44 20363 10.0 flat 08:46 20364 2.0 arc ----- sequence 20365, plate 1167 ------- 08:58 20365 10.0 flat 09:00 20366 2.0 arc 09:21 20367 1000.1 target 09:40 20368 1000.1 target 09:53 20369 600.1 target 10:01 20370 240.0 smear ----- sequence 20371, plate 1291 ------- 10:37 20371 10.0 flat 10:40 20372 2.0 arc 10:58 20373 900.1 target 11:11 20374 600.1 target 11:24 20375 600.1 target 11:31 20376 240.0 smear 11:35 20377 10.0 flat 11:37 20378 2.0 arc ---=== TELESCOPE OFFSETS AND SCALE I ===--- Time Instrument Az Alt Rot Scale pos offset pos offset pos offset ------------------------------------------------------------------------------ 03:40Z 1 1296 -40.42 0.0013 57.42 0.0004 146.68 0.0083 1.000080 07:42Z 6 1280 203.77 -0.0059 71.19 -0.0003 31.41 -0.0129 0.999990 08:17Z 6 1280 215.89 -0.0059 67.54 -0.0003 49.31 -0.0129 0.999990 09:12Z 9 1167 168.11 -0.0090 73.84 0.0008 -15.20 -0.0076 1.000100 10:45Z 4 1291 239.07 -0.0008 67.35 0.0028 75.12 -0.0069 1.000060 ---=== TELESCOPE OFFSETS AND SCALE II ===--- ---=== DATA TAPE SUMMARY ===--- Goes: JL6250 Stays: JL6251 ---=== FOCUS LOG ===--- setmir piston Temp Wind Time Inst scale M1 M2 Foc Az Alt (C) MPH Dir filt fwhm ------------------------------------------------------------------------------ 03:40Z 1 1296 1.00008 -789 455 -50 -41 57.4 -0.1 10 8 07:42Z 6 1280 0.99999 99 1211 0 204 71.2 -1.7 17 60 - 2.3 08:17Z 6 1280 0.99999 99 1217 0 216 67.5 0.3 6 50 - 2.2 09:12Z 9 1167 1.00010 -986 308 0 168 73.8 2.6 7 87 - 3.0 10:45Z 4 1291 1.00006 -591 445 -200 239 67.4 3.3 12 110 - 2.2 ---=== WEATHER LOG ===--- Wind Time Temp F Dewp F MPH Direction Dust DIMM Sky 22:15Z 44 20 6 214 (SW) 812 - clear 22:48Z 44 20 10 192 (SSW) 644 - " 23:21Z 43 19 9 263 (W) 444 - " 01:20Z 36 17 0 194 (SSW) 387 - " 01:53Z 33 17 9 55 (NE) 303 - " 02:24Z 32 16 17 50 (NE) 363 - " 02:55Z 31 16 18 60 (ENE) 489 - " 03:25Z 30 15 13 37 (NE) 559 - " 03:56Z 30 15 14 16 (NNE) 593 - " 04:28Z 33 12 12 48 (NE) 707 - " 05:00Z 31 14 11 42 (NE) 570 - " 05:31Z 31 14 10 44 (NE) 634 - " 06:04Z 27 14 15 61 (ENE) 607 - " 06:37Z 27 14 19 72 (ENE) 591 - " 07:39Z 28 11 16 64 (ENE) 568 - " 08:09Z 33 2 10 70 (ENE) 623 - " 08:41Z 34 2 2 173 (S) 670 - " 09:12Z 36 0 7 86 (E) 612 - " 09:42Z 36 -3 9 111 (ESE) 646 - " 10:13Z 37 -6 11 93 (E) 649 - " 10:45Z 38 -16 14 109 (ESE) 757 - " 11:15Z 38 -17 15 125 (SE) 924 - " 11:46Z 39 -19 17 128 (SE) 839 - " 12:16Z 40 -19 16 136 (SE) 867 - " ---=== TELESCOPE STATUS ===--- 00:30Z Blower and cone fans on. Doors opened. 01:30Z Enclosure rolled off. 12:15Z Closed enclosure. Blower & cone fans off. Telescope stowed at 30 deg. alt with cartridge 4 mounted. Counterweights at 280. 12:27Z Spectro dewar weight - 219 12:27Z Imager dewar weight - 190 ---=== SOFTWARE USED ===--- IOP/SOP: v3_115_0 Watcher: v2_21_0 MCP: v5_18_0 TPM: tpm_v2_28_0 AstroDa: v14_47 TCC: TCC 2.6.8 November 13 2002 sdssProcedures: v1_67 SoS: v4_9_13 hoggPT: v1_6_8 plate-mapper: v4_2_0 ---=== MIRROR NUMBERS ===--- PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A 0.0950 0.0790 Axial B 0.7990 0.7970 Axial C 0.8230 0.8240 Trans D -9.0700 -9.1130 Lateral E 1.7570 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.: 5.7 Alt.: 29.998181 MIGS TONIGHT NOMINAL Axial A 1.5180 1.5170 Axial B 1.1570 1.1560 Axial C 1.1030 1.0990 Trans D -0.6970 -0.7070 GALILS Commanded: 1619687. 1555240. 1576386. -3400. -7900. Actual: 1619650. 1555250. 1576350. -3400. -7900. SETMIR VALUES SecDesOrient: 1257.00 0.00 -20.00 0.00 130.98 SecOrient: 1257.02 -0.02 -20.02 -0.49 130.90 ---=== PROBLEMS IN DETAIL ===--- Kinematic Latch Problem: ------------------------ While unmounting cartridge 1, Howard had trouble getting all three latches to unlatch. French was called in. The trouble was with the latch booster pump, which was bad. French turned up the pressure setting on the pump to get us through the night. A PR was filed, although French has already scheduled the fix.