APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Tuesday March 8, 2005 (MJD 53438) ---=== OBSERVING TEAM ===--- Swing: Howard Brewington Night: John Barentine Jurek Krzesinski Advisor: French Leger Email: Connie Rockosi ---=== OBSERVING PLAN ===--- Science! ---=== OBSERVING SUMMARY ===--- High winds and humidity kept us closed for all but about three hours tonight. We finished one plate (1670) and got some signal on a second (1651). The spectro dewar is below 100lbs at the end of the night. We have notified the day staff that it needs to be changed ASAP this morning. ---=== OBSERVING LOG ===--- Swing: ============== Had no problems with afternoon checkout. Spectro focus was checked but not adjusted; see Problems Section for focus numbers. Night: ============== Skies mostly clear at sunset other than some stratus off to the N and NW. We had no radar returns in the vicinity. At 02:00Z, radar returns were uncomfortably close to the site. We went out to the telescope and confirmed virga not more than a couple of miles to our NNW, lit up by the lights of Alamogordo. We had trouble getting the telescope to slew to ths stow position (see Problems section), but closed quickly thereafter. The clouds dissipated after 02:45Z, but the wind picked up quickly thereafter. By 03:00Z we had gusts near 40MPH and the direction had turned hard to the east. The high winds dropped off after about 08:00Z; humidity was on the way down an hour later. We opened shortly after 09:30Z. Had a windscreen touch in altitude during movement of the telescope after opening the building. 09:45Z Cart 8, Plate 1670 (tile 1175, chunk85) Guide stars on gotoField. We got abnormally low counts in r1 relative to r2, followed by warnings in SoS about scattered light and max sky residuals. The frames look normal so we will use r2 to judge (S/N)^2 in declaring the plate done. Finished this plate in four exposures of 900, 1500, 1200 and 900 s, respectively. 11:45Z Cart 9, Plate 1651 (tile 1163, chunk82) No guide stars on gotoField, but an fk5InFiber worked. Got one 1200 s exposure on this plate in twilight before we had to close up for the night endNight rejoiced. ---=== IMAGING RUN SUMMARY ===--- Run Time Stripe Lambda Last Flavor Comments Start End Begin End Frame ------------------------------------------------------------------------- 5179 22:43Z 23:01Z 100 O -143.38 -53.37 45 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): yes QA Procedures Done (y/n): yes UT Exp Time flavor comment (S/N)^2 totals ========================================== b1 r1 b2 r2 ----- sequence 31270, plate -9999 ------- 22:40 31270 0.0 bias ----- sequence 31271, plate 1983 ------- 23:10 31271 10.0 flat 23:12 31272 2.0 arc 23:17 31273 2.1 arc 23:20 31274 2.1 arc ----- sequence 31277, plate 1670 ------- 32.0 5.4 29.0 18.8 DONE (see log) 09:55 31277 10.0 flat 09:58 31278 2.0 arc 10:27 31279 1500.1 target 10:50 31280 1200.1 target 11:13 31281 1200.2 target 11:32 31282 900.2 target 11:35 31283 10.0 flat 11:37 31284 2.0 arc ----- sequence 31285, plate 1651 ------- 9.0 7.7 9.9 9.0 11:54 31285 10.0 flat 11:56 31286 2.0 arc 12:20 31287 1200.1 target ---=== TELESCOPE OFFSETS AND SCALE I ===--- Time Instrument Az Alt Rot Scale pos offset pos offset pos offset ------------------------------------------------------------------------------ 10:28Z 8 1670 199.67 0.0031 71.45 0.0029 25.95 0.0043 1.000200 ---=== 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 ------------------------------------------------------------------------------ 01:30Z 3 2076 1.00000 0 1152 0 100 60.0 3.7 9 352 10:28Z 8 1670 1.00020 -1974 -156 350 200 71.4 -1.7 12 46 -- 2.2 ---=== WEATHER LOG ===--- Wind Time Temp F Dewp F MPH Direction Dust DIMM Sky 22:33Z 40 18 12 330 (NNW) 339 - MstlyClr 23:04Z 40 20 11 292 (WNW) 301 - MstlyClr 23:35Z 39 17 13 321 (NW) 317 - MstlyClr 00:06Z 40 14 7 347 (NNW) 282 - MstlyClr 01:38Z 38 15 5 358 (NNW) 354 - MstlyCldy 02:10Z 39 15 12 355 (NNW) 267 - MstlyCldy 02:43Z 39 15 9 22 (NNE) 288 - MstlyCldy 03:15Z 33 20 36 69 (ENE) 1092 - MstlyClr 03:47Z 29 25 32 68 (ENE) 968 - MstlyClr 04:19Z 29 26 26 64 (ENE) 746 - Clear 04:51Z 29 26 26 67 (ENE) 857 - Clear 05:24Z 29 26 27 66 (ENE) 789 - Clear 05:56Z 29 24 37 69 (ENE) 859 - Clear 06:28Z 28 24 25 72 (ENE) 784 - Clear 07:00Z 27 23 24 59 (ENE) 781 - Clear 07:33Z 26 23 29 67 (ENE) 863 - Clear 08:05Z 26 22 20 35 (NE) 1085 - Clear 08:37Z 26 22 24 51 (NE) 923 - Clear 09:09Z 27 21 14 54 (NE) 878 - Clear 09:40Z 28 20 16 69 (ENE) 859 - Clear 10:11Z 28 20 9 60 (ENE) 819 - Clear 10:44Z 30 18 9 21 (NNE) 769 - Clear 11:14Z 30 18 6 358 (NNW) 755 - Clear 11:45Z 31 18 10 2 (N) 725 - Clear 12:15Z 31 18 8 25 (NNE) 726 - Clear 12:47Z 32 15 17 27 (NNE) 709 - Clear ---=== TELESCOPE STATUS ===--- 23:55Z Doors and louvers opened, fans on 01:10Z Enclosure off 02:15Z Enclosure on, fans off, doors and louvers closed, recirc fan on 09:35Z Enclosure off 12:30Z Enclosure on, fans off, doors and louvers closed Telescope parked at 121,30 with Cart 9 (Plate 1651) mounted Spectro autofill reconnected Counterweights at 160 No interlocks bypassed Dewar weights at 12:50Z Imager: 151lbs 20psi Spectro: 73lbs 27psi ---=== SOFTWARE USED ===--- IOP/SOP: v3_143_0a Watcher: v2_30_0 MCP: v5_26_0 TPM: tpm_v2_47_0 AstroDa: v14_47 TCC: TCC 2.7.2.1 August 6 2004 sdssProcedures: v1_98 SoS: v4_10_7 hoggPT: v1_6_9 plate-mapper: v4_3_1 ---=== MIRROR NUMBERS ===--- PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A 0.5820 0.5770 Axial B 0.5900 0.5880 Axial C 0.9480 0.9460 Trans D -8.2060 -8.1960 Lateral E 10.0584 10.0330 Lateral F 11.6205 11.5951 GALILS Commanded: 4300. -1900. 2850. -13300. -7600. -7650. Actual: 4300. -1900. 2850. -13300. -7600. -7650. SETMIR VALUES PriDesOrient: 0.00 4.57 1.18 64.25 -249.76 PriOrient: 0.00 4.56 0.88 65.00 -249.58 SECONDARY: ---------- Focus: 0.00 Air Temp.: 5.3 Alt.: 30.064782 MIGS TONIGHT NOMINAL Axial A 1.5710 1.5680 Axial B 1.0580 1.0460 Axial C 1.1620 1.1590 Trans D -0.2050 -0.2020 GALILS Commanded: 1619195. 1604959. 1528537. -13800. -9950. Actual: 1619200. 1604950. 1528550. -13800. -9950. SETMIR VALUES SecDesOrient: 1257.00 27.97 -10.00 -90.00 257.89 SecOrient: 1256.99 27.98 -10.01 -89.94 257.49 ---=== PROBLEMS IN DETAIL ===--- ---== Spectro Focus Numbers ==--- IDL 5.5a> collimate, 31273 Reading /data/spectro/53438/sdR-b1-00031273.fit Reading /data/spectro/53438/sdR-b1-00031274.fit COLLIMATE: Min offset = -0.66 pix COLLIMATE: Max offset = 0.96 pix COLLIMATE: RMS across CCD = 0.44 pix COLLIMATE: Mean offset = 0.19 pix COLLIMATE: Camera b1 appears to be OUT-OF-FOCUS (|mean| > 0.15 pix) COLLIMATE: Predict blue camera ring movement of -6.7 degrees for spectro-1 COLLIMATE: (if red is already in focus) Log file = Collimate-53438-b1-00031273.log PostScript file = Collimate-53438-b1-00031273.ps Reading /data/spectro/53438/sdR-b2-00031273.fit Reading /data/spectro/53438/sdR-b2-00031274.fit COLLIMATE: Min offset = -0.13 pix COLLIMATE: Max offset = 0.43 pix COLLIMATE: RMS across CCD = 0.14 pix COLLIMATE: Mean offset = 0.11 pix COLLIMATE: Camera b2 appears to be IN-FOCUS (|mean| < 0.15 pix) COLLIMATE: Predict blue camera ring movement of -3.8 degrees for spectro-2 COLLIMATE: (if red is already in focus) Log file = Collimate-53438-b2-00031273.log PostScript file = Collimate-53438-b2-00031273.ps Reading /data/spectro/53438/sdR-r1-00031273.fit Reading /data/spectro/53438/sdR-r1-00031274.fit COLLIMATE: Min offset = -0.55 pix COLLIMATE: Max offset = 0.21 pix COLLIMATE: RMS across CCD = 0.22 pix COLLIMATE: Mean offset = -0.22 pix COLLIMATE: Camera r1 appears to be OUT-OF-FOCUS (|mean| > 0.15 pix) COLLIMATE: Predict (red) piston movement of 2041 steps for spectro-1 COLLIMATE: Issue SOP command: "sp1; mechPiston 2041" Log file = Collimate-53438-r1-00031273.log PostScript file = Collimate-53438-r1-00031273.ps Reading /data/spectro/53438/sdR-r2-00031273.fit Reading /data/spectro/53438/sdR-r2-00031274.fit COLLIMATE: Min offset = -0.71 pix COLLIMATE: Max offset = 0.06 pix COLLIMATE: RMS across CCD = 0.17 pix COLLIMATE: Mean offset = -0.18 pix COLLIMATE: Camera r2 appears to be OUT-OF-FOCUS (|mean| > 0.15 pix) COLLIMATE: Predict (red) piston movement of 1650 steps for spectro-2 COLLIMATE: Issue SOP command: "sp2; mechPiston 1650" Log file = Collimate-53438-r2-00031273.log PostScript file = Collimate-53438-r2-00031273.ps IDL 5.5a> Axes Aborts On Stowing Telescope -------------------------------- Early on in the evening, near 02:00Z, we had to close the telescope due to approaching rain/snow on radar. As we sent the telescope to stow position, it bailed out around an altitude of 20 degrees, stopping in alt/az first. We did an axis init and the brakes came back on, this time including the rotator. At that moment, Jurek heard a noise downstairs that sounded like something had dropped and hit the floor. Fearing a collision, we went down to check it out. We found nothing amiss other than the metal plate cover to an overhead j-box had come loose and fallen to the floor under one of the rotating equipment racks (though it was not wedged; i.e., did not cause the axes to halt). We cleared slips in both ALT1 and ALT2. Everything seemed to work okay after that. Here are the TPM errors that occured during this time: altitude (Windscreen touched in altitude: DOWN (2005-03-09 02:05:01Z sdssmcp): 2005-03-09 02:05:15Z) AxisStat:az (out_closed_loop amp_bad: 2005-03-09 02:11:13Z) We reported the j-box cover incident to French in the a.m. Spurious "ln2 empty" critical error? ------------------------------------ After opening tonight for the first time, we did the usual force-fill of the spectrographs while waiting for twilight to end. Soon thereafter, a critical error was thrown about the ln2 supply on sp1 having been exhausted. We were confident this was *not* the case (e.g., a valve having stuck shut) because the fill line connected to sp1 had frosted over during the fill, as is normal. We monitored the situation with "cc 1 tcheck" commands in SOP to make sure that the dewar temperature wasn't rising; all looked normal. One oddity concerned the manner and frequency of errors. Jurek got three incidences of the critical error, while John only got two. And for both of us, we only got a confirming Watcher warning once -- the first time the critical error was thrown. (We were each running Watcher on sdsshost.) Later in the night Connie responded to our emails about the critical errors asking for some additional status information. She did not seem concerned about the well-being of sp1 after that. At about 09:00Z, just to make 100% sure that all was well, we did another force-fill while closed. We noted that the fill took only 20 lbs. as opposed to the usual 40 lbs., but the fill progressed and completed otherwise normally. MCP Errors ---------- umbilical position: failed to get semSLC: S objLib OBJ TIMEO (2005-03-09 12:21:58Z sdssmcp) (umbilical_position: failed to get semSLC: S_objLib_OBJ_TIMEO (2005-03-09 12:21:58Z sdssmcp): 2005-03-09 12:22:20Z ) ERR: init cannot take semLatch (2005-03-09 12:21:59Z sdssmcp) (ERR: init cannot take semLatch (2005-03-09 12:21:59Z sdssmcp): 2005-03-09 12:22:20Z )