APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Friday March 14, 2003 (MJD 52713) ---=== OBSERVING TEAM ===--- Mike Harvanek (APO) Steph Snedden (APO) Dan Long (APO) Connie Rockosi (UW) Larry Carey (UW) Jon Brinkmann (APO) French Leger (APO; by phone) Robert Lupton (PU) Visitors: Sean Raymond (UW) Gajus Miknaitis (UW) Scotsuko N. K. (APO) ---=== OBSERVING PLAN ===--- Bright time imaging science. ---=== OBSERVING SUMMARY ===--- We acquired about 30 to 45 minutes of bright time imaging data (40 degrees along the celestial equator) that may be useful. Problems with the primary transverse actuator were solved by Larry Carey, Jon Brinkmann, et al. Also, an astigmatism actuator may have been damaged and an air leak associated with another astigmatism actuator was discovered. French was notified. The building interlock override was needed to open the enclosure. ---=== OBSERVING LOG ===--- During afternoon checkout we found that the 45 degree alt fiducial would not read going up. It did read going down though. The 137 degree az fiducial would not read going in either direction. Also during checkout, we found the transverse (D) and lateral (E) primary mig values were way off. We attempted to home and relax the primary but this did not solve the problem. Jon Brinkmann and Larry Carey were notified. After some investigation, it appeared that the transverse actuator was not getting the necessary air pressure. The valve supplying air to the transverse actuator was swapped but this did not solve the problem. During the homing and relaxing of the primary after the valve swap out, an odd squeak could be heard when the mirror was moved and it was thought that one of the astigmatism actuators may have been broken. Larry then decided to change the spring between the transverse quill and the load cell. He had recently replaced this spring with a weaker spring in an effort to prevent the spring from wearing a groove in the puck. He decided to put back the original, stronger spring and this fixed both the transverse and lateral mig value problems. Since it was cloudy, it was decided to track down the noisy astigmatism actuator. After searching all 12 ports, the problem actuator was finally found in port 12. However, the clouds had started to break up and it was decided to postpone removing the damaged actuator and installing a new one so that we could get on the sky. While searching for the problem actuator, an air leak was found in port 11. This leak was due to a faulty o-ring. Since a replacement o-ring could not be found, Larry fashioned a temporary fix out of black electrical tape. We finally opened around 0800Z. When opening, we had to use the building interlock override. The west door appeared to be all the way up, the hatch door was closed and the telescope was at 121, 6 but the building would not move. The override was installed and the building was opened without incident. After opening, we got on the sky for bright time imaging but the clouds had rolled in shortly after opening and no useful data were obtained. The clouds became threatening and we closed around 0850Z. The clouds thinned and we opened again around 1055Z. Again we had to use the building interlock override. Perhaps there is a bad switch/sensor in the west door or the hatch door? PR 4972 was filed. We obtained 30 to 45 minutes of bright time imaging data (40 degrees along the celestial equator) that may be useful. We closed around 1215Z. endNight was still running at the time of this writing. ---=== IMAGING RUN SUMMARY ===--- Run Time Stripe Lambda Last Flavor Comments Start End Begin End Frame ------------------------------------------------------------------------- 3725 01:54Z 02:01Z 100 O -90.02 -88.16 24 ignore 3726 02:13Z 02:47Z 100 O -85.19 -76.64 55 engineering 3727 02:51Z 07:24Z 100 O -75.79 -7.26 349 ignore 3728 07:35Z 07:37Z 100 O -4.40 -3.90 17 ignore 3729 08:16Z 08:20Z 100 N 5.76 6.90 19 ignore 3730 08:22Z 08:24Z 100 N 7.24 7.79 17 ignore 3731 08:27Z 08:33Z 100 N 8.51 10.07 24 ignore 3732 08:34Z 08:46Z 100 N 10.33 13.25 31 ignore 3733 11:03Z 11:12Z 100 N 47.72 50.00 29 ignore 3734 11:17Z 11:55Z 100 N 51.05 60.59 60 science ---=== 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): n QA Procedures Done (y/n): n UT Exp Time flavor comment (S/N)^2 totals ========================================== b1 r1 b2 r2 ----- sequence 19878, plate -9999 ------- 01:35 19878 0.0 bias 01:40 19879 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: JL6099 - JL6105 Stays: JL6106 - JL6112 ---=== 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 01:12Z 45 27 10 187 (S) 829 - 01:44Z 45 26 8 214 (SW) 795 - 02:17Z 45 23 16 209 (SSW) 582 - 02:47Z 45 24 13 203 (SSW) 627 - 03:21Z 44 26 13 216 (SW) 593 - 03:53Z 43 26 15 261 (W) 606 - 04:26Z 43 25 15 256 (WSW) 456 - 04:58Z 43 25 9 303 (WNW) 615 - 05:30Z 44 23 7 279 (W) 656 - 06:06Z 44 22 12 283 (WNW) 661 - 06:39Z 42 23 5 310 (NW) 758 - pcl 07:19Z 44 21 11 310 (NW) 694 - " 07:51Z 44 21 6 285 (WNW) 744 - " 08:23Z 44 21 5 276 (W) 809 - mcl 08:55Z 42 24 6 291 (WNW) 767 - " 09:28Z 42 25 5 32 (NNE) 726 - " 10:00Z 42 25 4 358 (NNW) 768 - " 10:32Z 40 25 6 359 (NNW) 760 - " 11:04Z 40 26 9 345 (NNW) 747 - pcl 11:37Z 39 26 5 29 (NNE) 746 - " 12:09Z 40 24 4 5 (N) 708 - " [pmt]cl = partly, mostly, totally cloudy ---=== TELESCOPE STATUS ===--- 07:45Z Fans and blowers on, louvers opened. 07:55Z Enclosure doors opened. 08:00Z Enclosure off. 08:50Z Enclosure on, doors closed, fans and blowers off, louvers closed due to threatening clouds. 10:55Z Doors open, fans and blowers on, louvers opened, enclosure off. 12:15Z Enclosure on, doors closed, fans and blowers off, louvers closed. Telescope stowed at 30 degrees with imager mounted. Counterweights at 730. Spectro auto-fill connected. Imager dewar 12:40 273 lb Spectro dewar 12:40 267 lb Building motion interlocks bypassed. ---=== SOFTWARE USED ===--- IOP/SOP: v3_109_4 Watcher: v2_21_0 MCP: v5_18_0 TPM: tpm_v2_27_0 AstroDa: v14_47 TCC: 2.6.8 sdssProcedures: v1_65 tccMon: v2_0 SoS: v4_9_13 hoggPT: v1_6_7 plate-mapper: v4_2_0 ---=== MIRROR NUMBERS ===--- PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A 0.1110 0.0790 Axial B 0.7970 0.7970 Axial C 0.8210 0.8240 Trans D -9.0700 -9.1130 Lateral E 1.8540 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.: 6.6 Alt.: 29.999997 MIGS TONIGHT NOMINAL Axial A 1.5160 1.5170 Axial B 1.1550 1.1560 Axial C 1.0980 1.0990 Trans D -0.6840 -0.7070 GALILS Commanded: 1619699. 1555177. 1576455. -3400. -7900. Actual: 1619636. 1555273. 1576326. -3383. -7925. SETMIR VALUES SecDesOrient: 1257.00 0.00 -20.00 0.00 130.98 SecOrient: 1256.97 -0.03 -19.97 -0.46 130.90 ---=== PROBLEMS IN DETAIL ===--- See the main log.