APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Wednesday January 1, 2003 (MJD 52641) ---=== OBSERVING TEAM ===--- Swing: Steph Snedden Night: Jurek Krzesinski, Pete Newman Support: French Leger (FNAL), Dan Long (by phone). Visitors: Several independent sets of tourists in need of a restroom (it was sunny, but COLD and the Sunspot Visitor's Center is closed today!) ---=== OBSERVING PLAN ===--- Science. ---=== OBSERVING SUMMARY ===--- Photometric in second half but seeing never good enough for imaging. Eight plates completed (901, 996, 1003, 1061, 1071, 1129, 1156, 1184) and two-thirds of the data for another (1012). And NOT postCals needed! ---=== OBSERVING LOG ===--- Pre-flight notes: ----------------- In an effort to avoid the crashes of the X server software on landru that have plaugued us recently, we rebooted landru before the start of operations this afternooon. No problems encountered. French and Steph determined that the problem with the M1 lateral F (west) MIG (see PR 4598) is with the gauge itself and not the MIG controller. Resolution of the problem will therefore probably have to wait until the primary mirror is next removed. Dan realised early this afternoon that we had left the imager and the DA system running in 4x4 binned mode last night after the Apache Wheel observations. Steph completed recovery from that, although it required a reboot of the photo and astro DA crates. Spectro focus checked and red focus tweaked a little although no values were completely out of spec. French labelled some more data tapes. We have seen some apparent MCP anomalies. The flat-field petals opened on tier own after removing the enclosure tonight during the slew up to 30deg altitude, and two nights (not logged) we had fun trying to turn off the arc lamps - they seemed to rturn themselves back on. We know this is not due to orphan processes on sdsshost, as it occurred after the rebot of sdsshost, so after tonight's work is complete (or first thing tomorrow) we will reboot the MCP. Some scattered cirrus before sunset. Although the clouds seemed to be clearing, the wind was from the NE suggesting poor seeing, so we elected to start with spectroscopy. We tested the hypothesis that there is a correlation between spectro guider FWHM figures and guide fiber position _in the guide camera_. See problem section #1 for details. Pete set a personal-best cartridge change time of 2m35s between plates 901 and 996 (aided greatly by the ending position of the plate 901 observations, of course). Observing sequence: ------------------- 00:41Z Plate 1129, cartridge 4. Done in 3 exposures. Munn program, standard S/N requirements. Some clouds arrived during the second exposure. 02:46Z Plate 1071, cartridge 1. Done in 3 exposures. Merged program, standard S/N requirements. Clouds increasing. 04:10Z Plate 1156, cartridge 2. Done in 4 exposures when combined with data taken earlier. We assume this is a "low-z" program plate like plates 1021-1037 based on it's tiling run, but it is not listed in the "Known Special Spectroscopic Plates". If so, it requires (S/N)^2 = 30. Photometric (s.d<10) after 05:45Z. 06:23Z Plate 1061, cartridge 9. Done in 3 exposures. Survey program. Guide stars just off fibers after gotoField. 07:47Z Plate 1184, cartridge 6. Done in 3 exposures. Survey program. FK5 star needed after gotoField. 09:05Z Plate 901, cartridge 5. Done in 3 exposures. Survey program. FK5 star needed after gotoField. 10:22Z Plate 996, cartridge 3. Done in 3 exposures. Survey program. FK5 star needed after gotoField. 11:35Z Plate 1003, cartridge 5. Done in 2 exposures when combined with data from MJD 52637. Survey program. FK5 star needed after gotoField. 12:25Z Plate 1012, cartridge 7. Survey program. Had to hunt to find an FK5 star, but found it quickly. First exposure good, second taken up to 12-deg twilight had marginal sky level (flagged yellow by SoS0. We tried a third exposure just to see if we could finish the plate, but alas, no (or joy! no! from the plate pluggers). endNight is running as this log is mailed. ---=== IMAGING RUN SUMMARY ===--- Run Time Stripe Lambda Last Flavor Comments Start End Begin End Frame ------------------------------------------------------------------------- ---=== 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 17686, plate 1129 ------- 23:34 17686 0.0 bias 23:38 17687 10.0 flat 23:40 17688 2.0 arc 23:44 17689 2.1 arc ----- sequence 17692, plate 1129 ------- 19.3 17.5 18.6 15.2 DONE 01:13 17692 10.0 flat 01:16 17693 2.0 arc 01:41 17694 1200.1 target 02:04 17695 1200.1 target 02:34 17696 1500.1 target 02:42 17697 240.0 smear ----- sequence 17698, plate 1071 ------- 16.7 13.7 18.6 15.2 DONE 02:59 17698 10.0 flat 03:02 17699 2.0 arc 03:26 17700 1200.1 target 03:44 17701 900.2 target 03:58 17702 600.1 target 04:06 17703 240.0 smear ----- sequence 17704, plate 1156 ------- 11.3 7.7 10.9 6.3 from MJD 52637 04:20 17704 10.0 flat 30.1 30.8 29.9 27.5 from tonight 04:22 17705 2.0 arc ---- ---- ---- ---- 04:46 17706 1200.2 target 41.4 38.5 40.8 33.8 DONE 05:14 17707 1500.2 target 05:42 17708 1500.2 target 06:10 17709 1500.2 target 06:19 17710 240.0 smear ----- sequence 17711, plate 1061 ------- 16.1 18.3 16.6 15.5 DONE 06:39 17711 10.0 flat 06:42 17712 2.0 arc 07:03 17713 900.2 target 07:18 17714 720.2 target 07:34 17715 720.2 target 07:42 17716 240.0 smear ----- sequence 17717, plate 1184 ------- 15.7 15.2 14.7 15.1 DONE 08:04 17717 10.0 flat 08:06 17718 2.0 arc 08:22 17719 720.2 target 08:37 17720 720.2 target 08:53 17721 720.2 target 09:00 17722 240.0 smear ----- sequence 17723, plate 901 ------- 20.9 18.7 16.8 15.9 DONE 09:18 17723 10.0 flat 09:20 17724 2.0 arc 09:38 17725 720.2 target 09:52 17726 720.2 target 10:10 17727 900.2 target 10:18 17728 240.0 smear ----- sequence 17729, plate 996 ------- 16.2 14.3 15.7 16.9 DONE 10:31 17729 10.0 flat 10:34 17730 2.0 arc 10:49 17731 720.2 target 11:08 17732 900.2 target 11:23 17733 720.2 target 11:31 17734 240.0 smear ----- sequence 17735, plate 1003 ------- 8.4 5.1 7.8 5.6 from MJD 52637 11:42 17735 10.0 flat 11.1 8.8 10.2 10.2 from tonight 11:45 17736 2.0 arc ---- ---- ---- ---- 12:00 17737 720.2 target 19.5 13.9 18.0 15.8 DONE 12:13 17738 600.2 target 12:21 17739 240.0 smear ----- sequence 17740, plate 1012 ------- 8.7 9.8 8.7 7.8 NOT DONE 12:36 17740 10.0 flat 12:39 17741 2.0 arc 12:52 17742 600.2 target 13:05 17743 600.2 target 13:20 17744 720.2 target ---=== TELESCOPE OFFSETS AND SCALE I ===--- Time Instrument Az Alt Rot Scale pos offset pos offset pos offset ------------------------------------------------------------------------------ 01:29Z 4 1129 -9.34 0.0035 56.83 0.0014 172.08 0.0000 0.999800 03:16Z 1 1071 -12.22 0.0032 56.55 0.0001 169.70 0.0105 0.999730 04:42Z 2 1156 -22.49 0.0029 55.16 0.0008 161.18 -0.0056 0.999730 07:01Z 9 1061 90.96 -0.0012 73.45 -0.0003 260.49 0.0067 1.000120 08:13Z 6 1184 10.31 0.0055 60.38 0.0014 188.61 0.0022 1.000110 09:38Z 8 901 171.84 -0.0088 72.52 0.0019 -10.72 -0.0202 1.000060 10:43Z 3 996 -9.84 0.0052 63.21 0.0016 171.64 0.0194 1.000060 11:53Z 5 1003 -18.57 0.0040 63.20 0.0020 164.27 -0.0048 1.000010 12:45Z 7 1012 206.56 -0.0033 65.17 0.0039 39.50 -0.0155 0.999970 ---=== TELESCOPE OFFSETS AND SCALE II ===--- ---=== DATA TAPE SUMMARY ===--- Goes: JL5875 Stays: JL5876 ---=== FOCUS LOG ===--- setmir piston Temp Wind Time Inst scale M1 M2 Foc Az Alt (C) MPH Dir filt fwhm ------------------------------------------------------------------------------ 01:29Z 4 1129 0.99980 1974 2705 -90 -9 56.8 -1.3 8 134 BG38 2.2 03:16Z 1 1071 0.99973 2665 3338 -30 -12 56.6 -2.3 5 180 BG38 1.9 04:42Z 2 1156 0.99973 2665 3322 -50 -22 55.2 -3.7 6 180 BG38 2.2 07:01Z 9 1061 1.00012 -1184 25 -120 91 73.4 -3.8 5 187 BG38 2.2 08:13Z 6 1184 1.00011 -1085 202 -50 10 60.4 -4.3 6 186 BG38 1.8 09:37Z 8 901 1.00006 -591 587 -50 172 72.5 -4.2 4 235 BG38 1.7 10:43Z 3 996 1.00006 -591 564 -90 -10 63.2 -4.3 5 241 BG38 2.2 11:53Z 5 1003 1.00001 -99 973 -90 -19 63.2 -4.7 3 257 BG38 2.0 12:44Z 7 1012 0.99997 296 1296 -90 207 65.2 -4.9 4 323 BG38 1.5 ---=== WEATHER LOG ===--- Wind Time Temp F Dewp F MPH Direction Dust DIMM Sky 00:03Z 30 9 4 102 (ESE) 69 - Patchy cloud 23:34Z 32 9 1 95 (E) 95 - " 00:33Z 30 6 6 85 (E) 84 - " 01:04Z 30 5 0 133 (SE) 57 - " 01:36Z 30 5 4 176 (S) 62 - " 02:07Z 28 6 6 147 (SSE) 62 - " 02:40Z 28 6 3 172 (S) 67 - " 03:11Z 27 6 6 177 (S) 80 - " 03:41Z 26 9 7 180 (S) 92 - Thin overcast 04:13Z 26 8 9 180 (S) 91 - " 04:43Z 25 8 7 184 (S) 83 - " 05:14Z 25 9 2 182 (S) 91 - " 05:45Z 25 8 5 199 (SSW) 86 - Photometric 06:18Z 25 8 5 180 (S) 74 - " 06:50Z 24 8 5 182 (S) 119 - " 07:23Z 25 8 4 184 (S) 86 - " 07:53Z 25 8 4 183 (S) 88 - " 08:24Z 25 8 7 196 (SSW) 103 - " 08:56Z 25 8 6 216 (SW) 92 - " 09:29Z 24 9 2 254 (WSW) 125 - " 09:59Z 24 10 3 207 (SSW) 92 - " 10:32Z 24 10 6 212 (SSW) 118 - " 11:03Z 23 10 6 264 (W) 107 - " 11:34Z 23 11 2 259 (W) 124 - " 12:04Z 23 11 3 249 (WSW) 144 - " 12:36Z 23 11 6 312 (NW) 118 - " 13:09Z 24 8 8 286 (WNW) 110 - " ---=== TELESCOPE STATUS ===--- 00:15Z Doors open, enclosure off (following spectro checks in cool enclosure) 13:30Z Enclosure going on in a few minutes. Status at 13:30Z: Telescope stowed at: 30 deg Instrument mounted: Cartridge 7 Counterweights at: 280 Autofill systems: On (or it will be in a few minutes) 180L LN2 dewar weights: Spectro 45 lb Imager 102 lb ---=== 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 0.0840 0.0790 Axial B 0.7940 0.7970 Axial C 0.8120 0.8240 Trans D -9.0780 -9.1130 Lateral E 1.8510 1.8870 Lateral F 0.0000 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.: -0.7 Alt.: 30.044719 MIGS TONIGHT NOMINAL Axial A 1.5180 1.5170 Axial B 1.1640 1.1560 Axial C 1.1040 1.0990 Trans D -0.7000 -0.7070 GALILS Commanded: 1619699. 1555221. 1576436. -3400. -7900. Actual: 1619636. 1555273. 1576326. -3383. -7925. SETMIR VALUES SecDesOrient: 1257.00 0.00 -20.00 0.00 130.98 SecOrient: 1257.00 0.00 -20.01 -0.48 130.88 ---=== PROBLEMS IN DETAIL ===--- Problem #1 - spectro guide camer focus -------------------------------------- Jurek (driving) noted large variations in the reported FWHM for guide fibers on more than one plate, where fibers close to each other on the plug plate had large differences in FWHM. We tested the hypothesis that there is a correlation between the reported FWHM and the position of the fibers on the termination block that is imaged by the guide camera, which would suggest that it may be possible to reduce the difference by re-focussing the guide camera. The fibers are arranged in the termination blocks as follows: 3 6 9 10 2 5 8 11 1 4 7 We recorded the following values from the guider monitor: Plate Plate Plate Plate Plate 1061 901 996 1003 1012 1 2.67 -- 2.15 1.68 1.76 4 2.18 -- 2.49 1.69 1.51 7 2.47 1.5 2.42 2.78 1.89 3 1.89 1.87 1.87 1.58 1.29 6 1.75 1.68 1.80 1.69 1.33 9 1.84 1.64 1.71 1.60 1.73 Plates 1061, 996, 1003 and 1012 suggest some bias towards larger FWHM to fibers 1, 4 and 7, although plate 901 is a counter-example. It's not clear if we have learned anything new from this.