APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Thursday July 3, 2003 (MJD 52824) ---=== OBSERVING TEAM ===--- Swing: Steph Snedden Night: Pete Newman Atsuko Nitta Carlos Gonzalez (via phone) Visitor: Howard Brewington ---=== OBSERVING PLAN ===--- Science! ---=== OBSERVING SUMMARY ===--- Reasonable spectro night. We finished 4 plates and had few problems. We had secondary A actuator oscillation. Homing the secondary multiple times (6 times) solved the problem. We had a difficulty getting one cartridge out of the bay because the bay was at a higher than the nominal position. Moving the bay up and down solved this. Moths doing things to the position sensor? The hoggpt crashed and needed rebooting. We were never able to successfully restart the cloud camera. We sent email to Craig for help. ---=== OBSERVING LOG ===--- Swing shift: ------------ After the daily 'host reboot sirrobert the laptop did not restart cleanly and had to be rebooted. Other than that, there were no problems. Spectro focus was adjusted slightly (details after the problems section). The DIMM altitude worm gear shaft was pinned by the engineering staff, so hopefully that takes care of the latest round of altitude drive problems. We will test it tonight if weather permits. Night: --------- Clouds and lightening close by delayed our opening. 04:00Z We opened. Sometimes PT were compaining of not being able to find stars due to clouds. Hopefully we get scientific photons. Cartridge 8 Plate 1335 ------------------------- Guide stars on gotoField with last night's offsets. Despite of clouds we are getting good S/N. 05:04Z Pete goes on Moth hunt armed with a vacuum cleaner. We finished this plate in 3 exposures (2400s). Cartridge 7 Plate 1393 -------------------------- 05:40Z: We went to fk5 to find the field. It was 13" off in RA (no offsets from the last plate). As we centered on fk5 image, we found the fk5 star elongated in N-S (see gimg0774.fits which is the first image of the elongated fk5 star). The primary was not oscillating (checked via TPM galil display and by the gauge in the lower enclosure), but the secondary galil A numbers were moving fast and large (the changes were not only in the last few digits). We slewed to our field and all our guide stars were elongated. We estimate the peak-to-peak amplitude of the oscillation to be 6" from the guider image. We moved the secondary by changing the focus slightly, but this did not help. We decided to home the secondary. After homing twice, we got errors which was for A -1481, B -121, C -807 (error tolerance is suppose to be +-200). A is very out of tolerance and C is bad too. After the next homing, the C error size went down, but the A still had about the same size of error (error tolerances are +-200). We called Carlos who was the engineer on call and tried homing again (5th or 6th time) with him on the phone. The error for A then decreased to within tolerances. Having Carlos on the phone seems to have helped. We then slewed back to the field and ran a focus sweep, and had nice round guide stars again. Back in business. We finished this cartridge in 3 exposures (1970s). Cartridge 2 plate 1409 ------------------------- We had to fk5 to find our field (7"offset in DEC). We had too large to correct AZ fid. error in wachcer, but the telescope crossed other fiducial with reasonable corrections before arriving to the field. Seeing bounced around a bit while observing this plae. The wind speed increased. We finished this plate in 3 exposures (2300s). We accidentally sent the telescope change before finishing smear. We also accidentally clicked on smear twice by mistake... So you will see two bad smears in the spectro log. There were no clouds overhead, but we saw some close by in the satillite image so we decided to stick to spectro. Cartridge 3 Plate 1177 ------------------------------- While trying to get ready for cartChange, we had problem getting the cartridge out of the bay. See porblem section. Also hoggpt hung (?) around the same time( 08:30Z) and the cloud camera image stopped updating. Pete rebooted hoggpt. 09:00Z We had stars on gotoField. The plate was designed for -2C and we are obsing at 17C --- the sop asked for a large scale change (0.05) as expected for a plate made of Al. We had exposures on this plate from previous nights. We got additionaal 3 exposures and finished it. We closed at 10:45Z. We saw clouds as the sky became brighter. We were not able to restart the cloud camera successfully to inform us on the sky condition after hoggPT crash. We sent email to Craig L for help. What do we have to do to get it start? Do we have to hop on our right or left foot three times to make the cloud camera restart after hoggPT crash? endNight finished happily. ---=== IMAGING RUN SUMMARY ===--- Run Time Stripe Lambda Last Flavor Comments Start End Begin End Frame ------------------------------------------------------------------------- 4036 23:10Z 23:24Z 100 O -21.77 -18.19 38 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):y QA Procedures Done (y/n):y UT Exp Time flavor comment (S/N)^2 totals ========================================== b1 r1 b2 r2 ----- sequence 21702, plate -9999 ------- 22:56 21702 0.0 bias ----- sequence 21703, plate 1335 ------- 19.7 22.3 19.6 21.6 23:08 21703 10.0 flat 23:10 21704 2.0 arc 23:39 21705 2.1 arc 23:41 21706 2.1 arc 23:57 21707 2.1 arc 23:59 21708 2.1 arc 04:32 21709 10.0 flat 04:35 21710 2.0 arc 04:55 21711 900.1 target 05:12 21712 900.1 target 05:26 21713 600.1 target 05:34 21714 240.0 smear ----- sequence 21715, plate 1393 ------- 15.3 21.6 14.7 16.4 06:28 21715 10.0 flat 06:30 21716 2.0 arc 06:47 21717 750.1 target 07:02 21718 600.1 target 07:17 21719 650.1 target 07:24 21720 240.0 smear ----- sequence 21721, plate 1409 ------- 13.1 17.0 13.3 16.6 07:43 21721 10.0 flat 07:45 21722 2.0 arc 08:00 21723 650.1 target 08:17 21724 825.1 target 08:34 21725 825.1 target 08:42 21726 240.0 smear 08:49 21727 240.0 smear ----- sequence 21728, plate 1177 ------- 17.4 15.9 14.6 14.6 09:12 21728 10.0 flat 09:14 21729 2.0 arc 09:38 21730 900.1 target 10:01 21731 1200.1 target 10:29 21732 1500.1 target 10:37 21733 240.0 smear 10:40 21734 10.0 flat 10:43 21735 2.0 arc ---=== TELESCOPE OFFSETS AND SCALE I ===--- Time Instrument Az Alt Rot Scale pos offset pos offset pos offset ------------------------------------------------------------------------------ 04:41Z 8 1335 204.38 0.0084 80.63 0.0049 27.40 0.0006 1.000170 06:34Z 7 1393 274.23 0.0064 61.15 0.0024 110.51 -0.0133 1.000110 07:55Z 2 1409 267.24 0.0018 49.29 0.0018 110.92 0.0086 1.000010 08:29Z 2 1409 263.28 0.0018 42.26 0.0018 111.74 0.0086 1.000080 09:31Z 3 1177 9.66 0.0030 49.02 0.0027 188.12 0.0062 1.000530 ---=== TELESCOPE OFFSETS AND SCALE II ===--- ---=== DATA TAPE SUMMARY ===--- Goes: JL6627 Stays: JL6628 ---=== FOCUS LOG ===--- setmir piston Temp Wind Time Inst scale M1 M2 Foc Az Alt (C) MPH Dir filt fwhm ------------------------------------------------------------------------------ 04:40Z 8 1335 1.00017 -1678 -522 -250 204 80.7 15.7 11 110 gdr 1.5 06:34Z 7 1393 1.00011 -1085 -40 -290 274 61.1 15.5 19 88 gdr 2.0 07:56Z 2 1409 1.00001 -98 812 -290 267 49.2 15.0 20 74 gdr 2.2 08:29Z 2 1409 1.00008 -789 263 -290 263 42.3 15.6 10 359 gdr 2.2 09:31Z 3 1177 1.00053 -5232 -3478 -330 10 49.0 17.3 7 12 gdr 2.0 ---=== WEATHER LOG ===--- Wind Time Temp F Dewp F MPH Direction Dust DIMM Sky 20:56Z 70 42 0 253 (WSW) 467 - 21:28Z 70 39 0 235 (SW) 512 - 22:00Z 74 42 9 254 (WSW) 379 - 22:32Z 69 41 0 215 (SW) 447 - 23:03Z 67 41 6 295 (WNW) 503 - 23:35Z 70 41 1 191 (S) 475 - 00:05Z 72 41 5 198 (SSW) 469 - 00:35Z 69 41 1 201 (SSW) 455 - 02:36Z 64 33 11 86 (E) 371 - 03:06Z 63 34 15 86 (E) 420 - 03:36Z 62 35 15 79 (E) 470 - 04:07Z 60 36 12 111 (ESE) 399 - 04:37Z 60 36 11 109 (ESE) 452 - 05:07Z 60 37 18 129 (SE) 451 - 05:37Z 58 37 19 111 (ESE) 426 - 06:08Z 59 37 19 85 (E) 433 - 06:40Z 60 36 22 79 (E) 466 - 07:10Z 59 36 25 75 (ENE) 490 - 07:40Z 59 36 19 69 (ENE) 431 - 08:14Z 59 35 14 43 (NE) 448 - 08:45Z 61 30 4 0 (N) 476 - 09:17Z 62 27 8 8 (N) 498 - 09:48Z 64 20 3 9 (N) 398 - 10:22Z 62 20 1 38 (NE) 368 - 10:54Z 62 24 6 11 (N) 410 - ---=== TELESCOPE STATUS ===--- 01:15Z: Fans on and doors open. 02:10Z: Doors closed. Lightening is within 15miles. 03:00Z: Doors opened. 04:00Z: Enclosure off. 10:45Z: Enclosure on, fans off. Telescope is at stow with cartridge 5 on. Autofill system connected. Dewar weights: spectro@124 imager@190 ---=== SOFTWARE USED ===--- IOP/SOP: v3_113_2 Watcher: v2_21_0 MCP: v5_18_0 TPM: tpm_v2_29_0 AstroDa: v14_47 TCC: TCC 2.6.8 November 13 2002 sdssProcedures: v1_71 SoS: v4_9_13 hoggPT: v1_6_9 plate-mapper: v4_2_0 ---=== MIRROR NUMBERS ===--- PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A 0.1000 0.0790 Axial B 0.8170 0.7970 Axial C 0.8270 0.8240 Trans D -9.0660 -9.0560 Lateral E 1.8650 1.8870 Lateral F 0.0000 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.: 20.1 Alt.: 30.310735 MIGS TONIGHT NOMINAL Axial A 1.5120 1.5170 Axial B 1.1450 1.1560 Axial C 1.0910 1.0990 Trans D -0.6950 -0.7070 GALILS Commanded: 1619724. 1555246. 1576455. -3400. -7900. Actual: 1619650. 1555250. 1576350. -3400. -7900. SETMIR VALUES SecDesOrient: 1257.00 0.00 -20.00 0.00 130.98 SecOrient: 1257.05 -0.04 -20.03 -0.49 130.91 ---=== PROBLEMS IN DETAIL ===--- Spectro focus check: -------------------- Cartridge 8, T=16.3 Before spectro focus check: sp1: sp2: A=-3134 -2875 B=-2934 -2889 C=-4034 -2889 After focus tweak: A=+242 +507 B=+442 +491 C=-658 +492 Windscreen touch error ------------------------ There was AZ wind screen tough while fiducializing in the afternoon. Another ALT wind screen touch while we were waiting for the lightening and clouds to go away to open. We were not moving the telescope at the time. altitude (Windscreen touched in altitude: UP (2003-07-04 03:36:02Z sdssmcp): 2003-07-04 03:36:14Z ) Too Large to Correct Fiducial Errors ------------------------------------------- azimuth (correction for azimuth -398288 is too large (2003-07-04 07:30:03Z sdssmcp): 2003-07-04 07:30:13Z ) Difficulty getting Cartridge out of the bay ---------------------------------------------- While trying to lift cartridge 3 out of the bay, the manipulator arm was stuck -- refused to go up or down. Visual inspection did not show as if anythig was wrong. Pete came down to help and as he pressed the manipultator arm switch slightly, the arm started to go up,engaged the cartridge and lifted it up. Then we had problem pulling out the cartridge. THe manipultaor height indicator said that the cartridge was at yellow (not the top red) position to be pulled out and not hit the top of the bay. The manipulator was very stiff in motion to move it out of the bay so that we can place the cart on the cart. It turns out that the cartridge bay position was not at its nominal position but HIGHER than usual. THis means that by the time usually the cartridge is on the manipulator arm, the cartridge was not quite engaged on the arm and pressing the switch. This means that the interlock thinks something is not right and will not let us move the manipulator arm easily. Probably the moth(s) did something to the position sensor to make it go up higher than it is suppose to. After moving the bay up and down, it did go to the right position and we were able to put back the cartridge 2 back in the bay without any problem. Cloud camera won't take any more images... -------------------------------------------- After hoggPT crash around 09:00Z, we were not able to restart the cloud camera. We tried scanstop/scanstart. We tried putting the cover back on which powers down the camera and then take the cover off and another scanstart. We did not know what else we could do to restart the cloud camera. Since the twilight started by the time we tried these things, we decided to email Craig for help.