APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Tuesday February 10, 2004 (MJD 53046) ---=== OBSERVING TEAM ===--- Swing Daniel Long Night Steph Snedden Atsuko Nitta John Barentine (1st half) Support Craig Loomis ---=== OBSERVING PLAN ===--- Finish off the remaining shake items. Pointing model Jim's donuts Science ---=== OBSERVING SUMMARY ===--- o We finished one last shake item for IOP (testi the new scd display) and was able to declare the new IOP (v3_128_0) current. o New watcher (v2_29_0) is also declared current. o No new pointing model. We verified what we saw last night -- TCC seems to apply correction in the opposite direction of where it is suppose to. o We finished one plate(1437) and got good signal on another(1314). Clouds and the Moon were against us tonight. o We did not turn on the ThermalKing after we closed because the dew point depression was only 4C. If it turns out to be a dry day, would the engCrew turn the ThermalKing on? o We could not get Jim's donuts. ---=== OBSERVING LOG ===--- Afternoon: ---------- Normal afternoon check. No problems encountered. Engineering camera mounted, so no spectro focus check. Evening -------- The new scd display (under iop v3_128_0) works as it should. All shake items in iop/sop have passed. We declared the new iop and watcher current. We delayed opening due to high humidity. 02:45Z Open with engCam on. We found the problem we saw in engCam last night is still with us. We pointed to an fk5 star and then applied the correction as TCC measured from its position. The star started to move away from the center of the chip instead of putting it in the middle of the chip -- as if the offsets had the wrong sign. This was exactly the same behavior we saw last night. We then checked the axial position of the camera, and we found out that the center of the position was exactly the same as last night, 20pixels off from center of the chip. We recorded the telescope positions, offsets, star image position as we checked the axial position for Dan and Steph emailed him the info. Since there is really no need to take a new pointing model (we were able to point fine both in imaging and spectro mode last night), we decided to do science. We put the cartridge on (cart5 plate 1154) and found that we had a communication problem with the guider camera. The paralan box had the dreaded RED light on. We tried wiggling the cables, check the connections, reseat the connections, pray, curse, reboot the MAC and the guider E-box, but none of these helped. Thanks to Craig's wonderful habit of working long and late, he was still on site. He found the fiber cable inside the guider E-box (the silver box) was bad. After swapping the cable Craig investigated the bad cable. It turns out that the end of the fiber, the part that is connected to the bulkhead, got GUNK on it. Apparently, leaving the end of the cables exposed to the world when we put the engCam on might have allowed GUNKS to get on the fiber end. After cleaning the GUNKS off, the cables were able to tranmit signal again. By the time we solved this problem, the moon was coming up and we had a science plate available, so we swapped to a survey plate. Cart 2 Plate 1437 ---------------------- stars on gotoField. Between clouds and bright sky, we got miserable S/N. We hold and wait to see if the clouds will move away. The bright sky seems to have triggered the scattered light warning from SoS (see the PROBLEM section for the exact error messages). The second exposure was taken in slightly better condition than the first, but the exposure was still not good enough. The clouds moved back in after this second exposure. 3rd exposure (24955) got valid S/N and sky level! We got a calib frames between science exposures when we had clouds. SoS recommended postCalib anyway, so these are not wasted calib frames. We considered putting the imager on to get jim's donuts, but the seeing is not stable enough -- varies up to 1" or so. If the seeing becomes stable and good, then we will mount the imager for the donuts. Around 09:30Z The clouds start to move away fast. We start taking science exposure. We finished this plate in 4 good science exposures (3x900s, 1x1200s). The seeing started to get worse towards the the end of the last science exposure which might be due to the wind changing its direction and now coming from the north. This plate was on the telescope for about 4.5 hrs mainly waiting for the cloud to go away. We did another postCalib. This plate therefore has one calib at the beginning, one calib in the middle and one calib at the end. Cart 9 Plate 1314 ------------------- We fk5ed. We ran a focus sweep and found that there was not really a minimum. The seeing is not great, around 2". The b1 first science exposure (900s) did not make it to s/n2=2. Sigh. Steph not only drove tonight, but worked on DIMM (checking coordinate transformation calculations). She is not done yet, but making progress. Around 11:45Z The humidity is going up and we checked the telescope/doghouse for any wetness. We carefully watch the dewpoint diff. We got 4 good science exposures before we had to stop due to twilight , but was not able to declare it done. We did a postCalib upon SoS's recommendation. 12:50Z We close. We decided not to turn the Thermal King on given the dew point depression of 4C. endNight ran successfully. ---=== IMAGING RUN SUMMARY ===--- Run Time Stripe Lambda Last Flavor Comments Start End Begin End Frame ------------------------------------------------------------------------- 4443 23:33Z 23:46Z 100 O -157.16 -153.91 36 ignore 4444 00:20Z 00:59Z 100 O -145.31 -135.63 79 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 24949, plate -9999 ------- 23:44 24949 0.0 bias 00:05 24950 0.0 bias ----- sequence 24951, plate 1437 ------- 14.8 29.7 15.9 21.0 05:59 24951 10.0 flat 06:02 24952 2.0 arc 06:27 24953 900.1 target 07:07 24954 900.1 target 07:49 24955 900.1 target 08:10 24956 900.1 target 08:14 24957 10.0 flat 08:17 24958 2.0 arc 08:57 24959 900.1 target 09:45 24960 900.1 target 10:04 24961 900.1 target 10:28 24962 1200.1 target 10:31 24963 10.0 flat 10:33 24964 2.0 arc ----- sequence 24965, plate 1314 ------- 10.8 18.9 13.8 18.0 10:58 24965 10.0 flat 11:00 24966 2.0 arc 11:19 24967 900.1 target 11:42 24968 1200.1 target 12:06 24969 1200.1 target 12:30 24970 1200.1 target 12:49 24971 900.1 target 12:52 24972 10.0 flat 12:55 24973 2.0 arc ---=== TELESCOPE OFFSETS AND SCALE I ===--- Time Instrument Az Alt Rot Scale pos offset pos offset pos offset ------------------------------------------------------------------------------ 07:19Z 2 1437 121.43 -0.0003 70.80 0.0007 -71.79 -0.0029 1.000210 10:55Z 9 1314 199.78 -0.0019 62.79 0.0040 31.92 0.0047 0.999880 ---=== TELESCOPE OFFSETS AND SCALE II ===--- ---=== DATA TAPE SUMMARY ===--- Goes: JL7223 Stays: JL7224 ---=== FOCUS LOG ===--- setmir piston Temp Wind Time Inst scale M1 M2 Foc Az Alt (C) MPH Dir filt fwhm ------------------------------------------------------------------------------ 07:19Z 2 1437 1.00021 -2073 -386 200 121 70.8 -2.7 7 282 gdr 1.2 10:55Z 9 1314 0.99988 1185 2326 200 200 62.8 -4.1 3 0 gdr 2.1 ---=== WEATHER LOG ===--- Wind Time Temp F Dewp F MPH Direction Dust DIMM Sky 22:59Z 33 19 5 265 (W) -9999 - Partly Cloudy 23:35Z 29 19 3 267 (W) -9999 - Partly Cloudy 00:07Z 29 21 4 263 (W) -9999 - Mostly Cloudy 00:44Z 27 21 1 214 (SW) -9999 - 01:16Z 25 22 3 329 (NNW) -9999 - 01:48Z 25 19 7 42 (NE) -9999 - 02:25Z 28 14 4 197 (SSW) -9999 - 03:01Z 30 12 10 236 (SW) -9999 - 03:33Z 29 14 8 266 (W) -9999 - 04:05Z 29 15 7 266 (W) -9999 - 04:38Z 29 14 8 269 (W) -9999 - 05:10Z 28 15 7 267 (W) -9999 - 05:42Z 28 15 4 264 (W) -9999 - 06:15Z 27 17 5 270 (W) -9999 - 06:47Z 27 15 7 316 (NW) -9999 - 07:17Z 27 16 8 290 (WNW) -9999 - 07:50Z 26 16 9 305 (NW) -9999 - 08:21Z 26 16 9 314 (NW) -9999 - 08:52Z 26 16 9 330 (NNW) -9999 - 09:24Z 25 16 7 334 (NNW) -9999 - 09:56Z 25 14 5 357 (NNW) -9999 - 10:29Z 25 14 6 27 (NNE) -9999 - 11:01Z 24 14 5 350 (NNW) -9999 - 11:33Z 23 16 5 59 (ENE) -9999 - 12:06Z 24 16 2 352 (NNW) -9999 - 12:36Z 23 17 5 4 (N) -9999 - 13:06Z 24 15 3 358 (NNW) -9999 - 13:39Z 24 14 2 61 (ENE) -9999 - ---=== TELESCOPE STATUS ===--- 02:44Z Fans on, doors cracked 12:50Z Closed Telescope is at stow with sp autofill connected. No interlock bypassed. Dewars: spectro=163 imager=203 ---=== SOFTWARE USED ===--- IOP/SOP: v3_128_0 Watcher: v2_29_0 MCP: v5_25_0 TPM: tpm_v2_37_0 AstroDa: v14_47 TCC: TCC 2.7.1 July 22 2003 sdssProcedures: v1_84 SoS: v4_10_7 hoggPT: v1_6_9 plate-mapper: v4_3_1 ---=== MIRROR NUMBERS ===--- PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A 0.5390 0.5420 Axial B 0.6310 0.6390 Axial C 1.0940 1.0900 Trans D -8.4540 -8.4610 Lateral E 10.8966 10.8966 Lateral F 10.8585 10.8712 GALILS Commanded: 4600. -2850. 850. -9250. 18400. 17850. Actual: 4600. -2850. 850. -9250. 18400. 17850. SETMIR VALUES PriDesOrient: 0.00 0.00 15.20 829.90 1.60 PriOrient: 0.00 0.00 14.91 830.49 3.19 SECONDARY: ---------- Focus: 0.00 Air Temp.: 0.9 Alt.: 29.999997 MIGS TONIGHT NOMINAL Axial A 1.5130 1.5160 Axial B 1.1210 1.1180 Axial C 1.1180 1.1210 Trans D 0.0010 -0.0050 GALILS Commanded: 1628581. 1548386. 1574427. -3900. -8750. Actual: 1628650. 1548200. 1574500. -3900. -8750. SETMIR VALUES SecDesOrient: 1257.00 0.00 -25.00 0.00 146.27 SecOrient: 1257.02 0.07 -24.93 0.31 146.52 ---=== PROBLEMS IN DETAIL ===--- Touch windscreen watcher errors ----------------------------------- altitude (Windscreen touched in altitude: DOWN (2004-02-11 02:54:42Z sdssmcp): 2004-02-11 02:55:01Z ) Counter weight error ------------------------ We saw the following error in watcher, but the counter weights were at the place we wanted to be for observations. Maybe this happened while we lowered the counter weight when we lowered it to change from engCam to spectro? Counterweight 2: limit abort (2004-02-11 04:23:44Z sdssmcp) (Counterweight 2: limit abort (2004-02-11 04:23:44Z sdssmcp): 2004-02-11 04:24:07Z) TPM errors ----------- dewar (Spectro Dewar Scale Communications Fault: 2004-02-11 03:04:41Z) m2 mig (Communications Fault: 2004-02-11 02:50:20Z) tracking (Excessive Az Tracking Error:: 2004-02-11 02:54:39Z) SoS errors -------------- The moony sky seems to have triggered a scattered light warning. sdR-r1-00024953.fit: WARNING: Scattered light median = 36 electrons (Warm CCD or twi?) sdR-r1-00024953.fit: WARNING: Scattered light max = 74 electrons (Warm CCD or twi?) sdR-r2-00024953.fit: WARNING: Scattered light median = 33 electrons (Warm CCD or twi?) sdR-r2-00024953.fit: WARNING: Scattered light max = 61 electrons (Warm CCD or twi?)