APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Friday September 12, 2008 (MJD 54722) ---=== OBSERVING TEAM ===--- Dmitry Bizyaev Audrey Simmons MARVELS team Jim Gunn (support) ---=== OBSERVING PLAN ===--- Science! ---=== OBSERVING SUMMARY ===--- Another lost night due to high humidity. Jim Gunn removed the vacuum pump on sp1 just in case we were able to go on sky. If interested in knowing how to do this, the procedure is in the log. A hung process created problems with the murmur log around ~07:00Z. After killing a process and cleaning up the murmur, everything worked again. The spectro dewer was replaced with a full one. A force fill for sp2 was done at 10:14Z. ---=== OBSERVING LOG ===--- Afternoon: ---------- ntp_check ok iccSoundoff ok imager bias ok spectrografs: FAILED, sp1 does not respond. Oops, sp1 is being pumped. Jim Gunn: it takes a long time to pump, so we started earlier. The pump will be disconnected if there is any chance to open. Meanwhile, humidity is ~ 90%, scattered cumulus clouds. (at 00:02Z) Night: ------ 00:56Z - Forced a fill to spectrograph 2. 06:42Z - We watched Jim Gunn remove the vacuum pump that was pumping down spectrograph 1. We did this just in case the humidity dropped and we are able to go on sky. The procedure is as follows: 1. Close the gold valves on the liquid nitrogren entry points to both the red and blue cameras. You do this by screwing the valves tight. 2. Flip the switch on the pump from protect to bypass. This will override the safety latch that is in place for an unexpected power outage. 3. Turn off the pump by turning off the bottom-most button on the panel. 4. Wait 5-10 minutes while the fan slows down and brings the pump back up to atmospheric pressure. 5. When the display reads ~1 torr, a red LED will turn on (on the top of the pump). This is when highly pure nitrogren gas backfills the system. 6. When it is done, the LED will turn off. Now it is safe to disconnect the hoses very carefully and immediately cover the ends with the white/cloudy covers in the orange box. Note: Do not bend the hoses. 7. Unplug the powercords and any cords to sensors. Push the cart out of the way and put the dewer back on the scale. Make sure that nothing is in the way of the telescope. 06:57Z - Replaced spectro dewer with a full one. 07:20Z - Problem with the murmur log. We discovered this when no fiducial crossings were recorded during our checkout. The log kept spitting out this error: /linuxp/prd/astroda/v15_13_1/bin/dscMurPipe: Got unexpected retval=0 on hdr read. Expected 6 bytes. Several attempts to cleanup the murmur resulted in these errors: im> cleanupMurmur Stopping murmur server /astrolog/astroda.v15_13_1.log already exists, deleteing it /astrolog/astroda.v15_13_1.log removed Restarting the murmur server murmur server restarted Trying to ensure the murmur log exists Error: Murmur reconnect failed im> startMurmur -- MURMUR CLIENT STATUS : "Can't SEND to MURMUR server - IO error" -- Errno message : -- MURMUR CLIENT STATUS : "Can't SEND to MURMUR server - IO error" -- Errno message : mur_send_text failure, error code : 0x800001fa 13755 Dmitry killed a process that hung yesterday. Then, the murmur started up normally again. 10:13Z - Forced a fill for sp2. Called it a night since the humidity was a problem all night, and is currently at a value of 101.9%. 10:36Z - endNight rejoiced. ---=== 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 ===--- Summary Checked (y/n): QA Procedures Done (y/n): UT Exp Time flavor comment (S/N)^2 totals ========================================== b1 r1 b2 r2 ---=== TELESCOPE OFFSETS AND SCALE I ===--- Time Instrument Az Alt Rot Scale pos offset pos offset pos offset ------------------------------------------------------------------------------ ---=== TELESCOPE OFFSETS AND SCALE II ===--- ---=== 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 22:26Z 57 50 4 268 (W) 304 - Humid 22:58Z 56 50 2 312 (NW) 341 - " ---=== TELESCOPE STATUS ===--- Enclosure remained on, doors and louvers remained closed, and fans remained off. No interlocks bypassed. Status at: 10:15Z Telescope stowed at: 30,121,00 mount Instrument mounted: Cartridge 9 Counterweights at: 255 lbs LN2 autofill systems: Connected and turned on. 180L LN2 dewar scales: Spectro 242.10 lbs, 22.01 psi Imager 181.80 lbs, 21.57 psi ---=== SOFTWARE USED ===--- IOP/SOP: v4_39_0 Watcher: v2_36_0 MCP: v6_4_0 TPM: tpm_v3_5_0 AstroDa: v15_13_1 TCC: TCC 2.7.2.1 August 6 2004 sdssProcedures: v2_42 SoS: v5_1_8 plate-mapper: v4_3_1 ---=== MIRROR NUMBERS ===--- PRIMARY: ----- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A: -0.0290 -0.0300 Axial B: 0.0390 0.0390 Axial C: -0.0380 -0.0400 Trans D: -0.7550 -0.7570 Lateral E: 10.5664 10.5537 Lateral F: 12.1539 12.1539 GALILS Commanded: 10471. -76. 5755. 8616. 10374. 10023. Actual: 10450. -100. 5750. 8600. 10350. 10000. SETMIR VALUES primDesOrient: 0.00 -11.72 8.60 496.70 640.50 primOrient: 1.06 -11.65 8.77 495.77 639.59 SECONDARY: ------- Focus: 0.0 Air temp: 10.1 C Altitude: 30.00 MIGS TONIGHT NOMINAL Axial A: 18.5640 18.5620 Axial B: 15.6110 15.6080 Axial C: 13.8160 13.8170 Trans D: 15.1130 15.1170 GALILS Commanded: 1626627. 1528808. 1595583. -2945. -4561. Actual: 1626591. 1528928. 1595391. -2950. -4550. SETMIR VALUES secDesOrient: 1257.00 -12.00 -28.00 -39.00 94.77 secOrient: 1256.97 -11.91 -27.97 -39.17 94.64 ---=== PROBLEMS IN DETAIL ===---