APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Monday August 25, 2008 (MJD 54704) ---=== OBSERVING TEAM ===--- Kaike Pan (shaker down) Dmitry Bizyaev (shaker down) Steph Snedden (support) New guider guru: Paul Harding M2 Actuators story participants French Leger Dan Long Rusell Owen ---=== OBSERVING PLAN ===--- Shakedown ---=== OBSERVING SUMMARY ===--- Mostly clear night with rather high humidity (>75, and >80 in the second part of the night). M2 D & E actuators problem, see log. M2 A-actuator got stuck in its home position. All need to be checked in daytime. Sos was overloaded afternoon with improperly worked rsync processes. sos_stop/sos_start was issued at the evening and sos transfered and re-reduced files all night long. Humidity and dewpoint values for 2.5m at APO Weather Status page are incorrect. Also it stopped working for few hours (the section about 2.5m only) during the night. Primary mirror home/relax was done. The M2 actuators problem that will take workaround in the daytime in combination with high humidity and limited humidity monitoring did not let us go on sky and do the optical collimation. We were unable to adjust and collimate spectrographs since Sos will have finished its update only to the morning. We opened enclosure and tested the new guider on sky. A star was caught into a guider fiber. Paul estimated its FWHM as 1.6" (yet it was not round-shaped), so the optics is not far from the focus. Sky signal for th new guider has reasonable value. ---=== OBSERVING LOG ===--- Afternoon: --------- ntp_check ok iccSoundOff ok imager bias ok spectro bias - taken but sos is still synchronizing, apparently with problems and heavy loading, so we cannot check the biases at the beginning of the night. Fudicials are ok. Balance is adjusted and good now. All lamps are coming on. Night: ------ 00:00Z sos is still heavy loaded (loading is 7+), 3 rsync processes are active. Steph sos_stopped, we clean sdsshost2 from old files to speed up re-reducing. 00:30Z Ventilation started, doors opened. 01:25Z 29 safe-to-remove nights were deleted from sdsshost2. Sos cleaned and sos_started. 03:15Z primary mirror was homed/relaxed ok. Secondary got a problem: when E and D were moved to their home positions, we got an error: ?Command error 22 Begin not possible due to limit switch Then we moved actuators one by one, and D was OK, whereas E got the same error message. Note that the position it got stuck was ~ 160000 (i.e. over 18000 limit). Attempts to move "E" somewhere else didn't work. We called Dan Long, he was able to move the E to -18000 from home. When we tried again, it didn't move properly. Numbers before all movements: 0 0 I PrimCmdMount=6700.,-2200.,3650.,-1650.,-6500.,-6500.; CmdDTime=2.1 0 0 I PrimActMount=6700., -2200., 3650., -1650., -6500., -6500. 0 0 I PrimOrient=0.00, 0.00, 0.00, 0.00, 0.00 0 0 I SecCmdMount=1467619.,1398270.,1410580.,6226.,10208.; CmdDTime=21.0 0 0 I SecActMount=1467517., 1398226., 1410572., 6250., 10200. 0 0 I SecOrient=1131.21, 3.56, -22.24, -99.62, -191.15 03:52Z French power cycled galils, then we checked (the same problem occurs) 04:15Z we replaced M2 galils block. The same behavior of D&E: actuator D goes to home position after the command D=0; E=0; XQ#HOME but "E" moves to positive direction rather than negative. It stops by timeout limit (~300 sec) and reaches 130000 - 160000. 04:50Z conference between Rusell Owen, Dan, French and us is organized. Apparently, the round assemply that is moved by the actuators hits metal parts before the actuators D and E come to the reverse limit switch. Russel and Dan were able to move the actuators to zero positions. Optical collimation makes no sense at this point since tomorrow French and Dan will work on E and D. 05:50Z around this time weather page stopped showing information for 2.5m. (came back with same wrong numbers around 09:30Z) 05:56Z enclosure off. We decided to test the new guider on sky. 06:30Z New guider: we see signal from sky in fibers. Also, we caught some accidental stars into fibers. The system seems to be not terribly out of the focus, by the way. Paul measured FWHM as ~1.6" for an accidental star. 06:48Z Dome closed since humidity is ~80% at 3.5m, and we lost our weather data. 07:25Z spectro LN2 dewar was replaced. We continued with A,B,C secondary home/relax. Surprise again: actuator A went to its home position (~-7250000) and does not move from it. We tried in combination with B and C, and alone, many times. Actuator A got stuck. 09:40Z ad2 is not responding. Astro crates rebooted. 10:51Z endNight rejoiced sos is still about an hour to completion. ---=== IMAGING RUN SUMMARY ===--- Run Time Stripe Lambda Last Flavor Comments Start End Begin End Frame ------------------------------------------------------------------------- 7650 23:20Z 00:05Z 100 O 33.74 44.99 68 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): 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 23:47Z 61 48 0 207 (SSW) 765 - 00:17Z 60 45 0 233 (SW) 757 - 00:47Z 58 42 10 127 (SE) 784 - 01:17Z 58 42 12 138 (SE) 592 - some clouds 01:48Z 57 43 10 127 (SE) 675 - '' 02:18Z 57 43 14 123 (ESE) 760 - '' 02:48Z 56 44 17 125 (SE) 1133 - '' 03:18Z 56 45 17 146 (SE) 1278 - '' 03:48Z 55 45 16 139 (SE) 1304 - '' 04:18Z 55 45 18 134 (SE) 1526 - '' 04:49Z 54 46 17 142 (SE) 1598 - '' 05:19Z 54 47 19 129 (SE) 1692 - '' 05:49Z 53 47 19 136 (SE) 1586 - '' 06:19Z 54 47 18 133 (SE) 1487 - mostly clear 06:52Z 53 47 18 126 (SE) 1523 - '' 07:24Z 53 46 21 127 (SE) 1354 - '' 07:56Z 52 46 17 126 (SE) 1354 - '' 08:29Z 52 46 14 111 (ESE) 1405 - '' 09:01Z 52 46 19 125 (SE) 1422 - '' 09:34Z 52 46 15 128 (SE) 1373 - '' 10:04Z 51 48 16 128 (SE) 1518 - '' 10:34Z 51 48 14 126 (SE) 1440 - '' ---=== TELESCOPE STATUS ===--- 00:30Z - Began ventilation. Doors and louvers opened, fans on. 05:56Z - Enclosure off. 06:48Z - Enclosure on, doors and louvers closed, fans off. No interlocks bypassed. Status at: 10:20Z Telescope stowed at: 30,121,00 mount Instrument mounted: Cartridge 6 Counterweights at: 256 lbs LN2 autofill systems: Connected and turned on. 180L LN2 dewar scales: Spectro 263 lbs, * psi Imager 136 lbs, 18.4 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: SoS: v5_1_8 plate-mapper: v4_3_1 ---=== MIRROR NUMBERS ===--- ---=== PROBLEMS IN DETAIL ===--- -- Humidity and dewpoint for 2.5m at APO Weather Status page shows incorrect numbers. tmicro (Disconnected Sensor in M2B2:Disconnected Sensor in M0B4:: 2008-08-26 06:58:56Z) This error comes on constantly right after it is reseted.