APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Tuesday December 3, 2002 (MJD 52612) ---=== OBSERVING TEAM ===--- Mike Harvanek (swing) Dan Long Steph Snedden Atsuko Nitta (support by email) ---=== OBSERVING PLAN ===--- Sacrifice a chicken to the weather gods, so we can observe. ---=== OBSERVING SUMMARY ===--- Nary a chicken to be found, and apparently, weather gods don't like extremely leftover Thanksgiving turkey. Four to five inches of heavy, wet snow. No science. Note to APO staff: Snow on Sunspot Hwy is thick. Check that it has been plowed before you try driving it. ---=== OBSERVING LOG ===--- Swing shift: The day shift (Jean) had lots of work dealing with water in the lower enclosure. Later, Mike discovered that the MCP was down when he started MOP (!). Yes, MOP cares about what MCP version is running...we guess because it is built on top of IOP. The MCP needed to be rebooted. Also, the alignment clamp was on and needed to be released. Mike noticed the alignment clamp was in the "neither" position in the interlocks display, then when he tried to move the telescope, the interlocks showed it as being "on". Jon Brinkmann used the mcp "-" command to clear the alignment clamp position and telescope motion was enabled. It is quite possible that all of this is related to the water in the lower enclosure. Some may have gotten into the rack with the MCP board. Also, the watcher complained that the mcptpm disk on sdsshost was getting too full, saying that there was only 1% of the disk space available. The /data/mcptpm directory on commish was examined and NONE of the files on the sdsshost directory were there. We contacted Atsuko by email to clarify our policy on handling this, then blew away many of the files, per our policy. We had from four to six inches of heavy wet snow from the wrap-around of the same low pressure system that's been hanging around all week. As the snow moved out, it was replaced with fog and some blowing snow. We never opened. 09:00Z (approx). We had a few brief power outages. 09:03Z A tbars fault message was thrown. 09:05Z We heard the site air alarm. Sure enough, the compressors were off, and the pressure was dropping. We started the compressors back up, but the site air dropped to about 32 PSI before it started climbing back to nominal. We then checked the state of the air pressure and vacuum (including vacuum to the T bars, Jim) in the 2.5-m enclosure. We also checked the positions of the M1 actuators. All checked out fine. All systems recovered from the drop in site air pressure. ---=== 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 17240, plate -9999 ------- 21:21 17240 0.0 bias ----- sequence 17244, plate -9999 ------- 23:35 17244 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: JL Stays: JL ---=== FOCUS LOG ===--- setmir piston Temp Wind Time Inst scale M1 M2 Foc Az Alt (C) MPH Dir filt fwhm ------------------------------------------------------------------------------ ---=== WEATHER LOG ===--- Wind Time Temp F Dewp F MPH Direction Dust DIMM Sky 20:47Z 31 31 10 264 (W) 4073 - cloudy 21:23Z 31 31 12 270 (W) 4102 - cloudy 23:31Z 29 28 8 284 (WNW) 9 - cloudy 03:48Z 26 26 4 354 (NNW) 26 - snow 04:20Z 26 26 10 286 (WNW) 231 - snow 04:52Z 26 26 5 264 (W) 77 - snow 05:24Z 25 25 5 334 (NNW) 2711 - snow 05:57Z 25 25 6 356 (NNW) 7017 - snow 06:29Z 25 25 10 30 (NNE) 985 - snow 07:01Z 26 25 2 3 (N) 5934 - snow 07:31Z 26 25 18 349 (NNW) 4063 - snow 08:01Z 26 25 10 347 (NNW) 2538 - snow 08:34Z 26 24 10 10 (N) 1440 - snow 09:04Z 25 24 4 291 (WNW) 8928 - fog 09:34Z 24 23 14 12 (NNE) 7430 - fog 10:04Z 24 23 22 16 (NNE) 3052 - fog 10:34Z 24 22 13 37 (NE) 424 - fog 11:04Z 23 21 14 358 (NNW) 3 - fog 11:35Z 23 21 21 26 (NNE) 14 - fog 12:05Z 22 20 9 6 (N) 12 - fog 12:35Z 23 20 17 33 (NNE) 7 - fog ---=== TELESCOPE STATUS ===--- Never opened. 06:30Z - replaced imager 180-l dewar 10:24Z - Shut down for the night Telescope stow alt: 30 deg Instrument mounted: Cart 7 Counterweights: 280 LN2 Autofill: on 10:24Z Spectro dewar weight: 102 10:24Z Imager dewar weight: 227 ---=== SOFTWARE USED ===--- IOP/SOP: v3_98_0 Watcher: v2_20_0 MCP: v5_16_0 TPM: tpm_v2_18_0 AstroDa: v14_47 TCC: 2.6.8 sdssProcedures:v1_56 SoS: v4_9_13 hoggPT: v1_5_8 plate-mapper: v4_1_0 ---=== MIRROR NUMBERS ===--- PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A 0.0820 0.0790 Axial B 0.7960 0.7970 Axial C 0.8120 0.8240 Trans D -9.0780 -9.1130 Lateral E 1.8730 1.8870 Lateral F 1.4210 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.: -0.4 Alt.: 30.013740 MIGS TONIGHT NOMINAL Axial A 1.5180 1.5170 Axial B 1.1650 1.1560 Axial C 1.0990 1.0990 Trans D -0.6970 -0.7070 GALILS Commanded: 1619706. 1555296. 1576361. -3400. -7900. Actual: 1619650. 1555250. 1576350. -3400. -7900. SETMIR VALUES SecDesOrient: 1257.00 0.00 -20.00 0.00 130.98 SecOrient: 1257.03 0.00 -20.01 -0.49 130.88 After site air went off & came back up, we took mirror numbers again to see the state of the primary actuators. The numbers didn't change, so the PMSS survived the drop in pressure well. PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A 0.0820 0.0790 Axial B 0.7960 0.7970 Axial C 0.8130 0.8240 Trans D -9.0750 -9.1130 Lateral E 1.8710 1.8870 Lateral F 1.4230 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.: -4.3 Alt.: 30.064125 MIGS TONIGHT NOMINAL Axial A 1.5170 1.5170 Axial B 1.1630 1.1560 Axial C 1.0990 1.0990 Trans D -0.6950 -0.7070 GALILS Commanded: 1619655. 1555271. 1576354. -3400. -7900. Actual: 1619650. 1555250. 1576350. -3400. -7900. SETMIR VALUES SecDesOrient: 1257.00 0.00 -20.00 0.00 130.98 SecOrient: 1257.01 -0.01 -20.00 -0.48 130.89 ---=== PROBLEMS IN DETAIL ===---