APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Wednesday October 2, 2002 (MJD 52550) ---=== OBSERVING TEAM ===--- Pete Newman (day) Dan Long Atsuko Nitta Scot Kleinman Steph Snedden (Shaking PT) Visitors: Larry Carey Russel Owen ---=== OBSERVING PLAN ===--- Shake down. o Checkout the telescope o Pointing model o Collimation check o Imaging and spectro to make sure we can do routine observations. o Astronmetric calibration scan will be nice. o biasGen and biasCheck ---=== OBSERVING SUMMARY ===--- Steph did a PT checkout -- The pointing looks good. We were closed due to high winds and did not get on sky until middle of the night. Through the night the humidity rose and right after we close in twilight, it reached closure condition. o MCP fiducial table was bult and new MCP was cut o Home and Relaxed the mirrors. o Rough collimation check with engCam indicates that the collimation is good. o Two pointing models were taken as part of Dan's pointing model tests -- one allowing the rotator to move and another without any rotator motions. Both models have good RMS (1.4" and 1.3" respectively) and the pointing differences is small ~1" when using the engCam. The true test will be when we compare pointing using the two models with the spectrographs. o Although we did not do use iop/sop tonight and had no data to archive, we ran endNight to make sure it still works. The cause of the failure is due to the spectro/gang tape drive 1 is flashing all its lights and iop cannot talk to it. PR was filed. ---=== OBSERVING LOG ===--- Fiducial tables were built for MCP based on the measurements taken today by Wendell Jordan and French Leger. Azimuth: GC=1033566994-1033569908 T=10.45C All fiducials read correctly with the exception of #19, in which case the read head triggers on #19 fiducial however is displayed as #18 in the MCP. Thus, two #18 fiducials are displayed in the MCP since also the real fiducial #18 is displayed correctly. Replaced in MJD 52550 after change to allow for fiducial 19 working: GC=1033593442-1033597259 T=12.07C We know that the new azimuth fiducial read head makes the MCP think the telescope is at 119deg27min when it is in fact at 121deg. The mean scale on the azimuth axis is 0.01402 arcsec/encoder-tick, so the error of 1deg33min becomes +398003 ticks. We therefore apply this correction to the encoder position for fiducial 19 using: plotMcpFiducials -az -y pos1 -x deg -time0 1033593442 -time1 1033597259 -scale -canon -reset -table az_fixed.dat -setCanonical 19:31414191 where 31414191 = 31016188 + 398003 and 31016188 is the default canonical encooder position for fiducial #19. New scale: 0.014016749168327692 (was 0.014016590412478571) Altitude: GC=1033570211-1033572667 T=10.45C All fiducials read correctly. plotMcpFiducials -alt -mjd 52549 -time0 1033570211 -time1 1033572667 -y pos1 -table alt.dat Scale not changed per procedures. Rotator: GC=1033572906-1033575215 T=10.52C All fiducials read correctly. plotMcpFiducials -rot -mjd 52549 -time0 1033572906 -time1 1033575215 -y pos1 -table rot.dat -reset -canon -scale New scale: 0.021315788668860709 (was 0.021315786571172373) Checked in the new fiducial tables and edited the scales in axis.h, and taged a new version v5_13_5. When the telescope is at Az=121 both green lights turn on indicating that the telescope is indeed in stow position. Dan relaxed the primary mirror inside the building. But when we tried to move the building off, it refused to do so. We verified that, 1. Telescope is at (121, 6). PLC knows the telescope is at AZ=121 or it would have not let us go to ALT=6 (which we did verify by trying to move the telescope down at AZ=121+-1.5 and the telescope halted.) 2. The west door hits the switch. 3. The hatch to the lower enclosure is closed. We were ready to bypass the building interlock, but then the wind went above 35m/h so we closed the doors and decided to wait for the wind to die down. French is aware of this problem and will work on it tomorrow. PT checkout ------------ Steph came in today to checkout the PT. Steph checked the pointing and found that at worst it was off by ~1.5 arcmin. Spectro Monthly Checkout -------------------------- We took some bias frames (frame 16418-16430) while we were closed for the high wind. Pointing Model --------------------- We finally opened around 06:20Z bypassing the building interlock. We could not find an FK5 star after the first slew. Dan decided to look for a very bright star (2 mag star) from the bright star catalogue. We were able to see the glow from the bright star at the edge of the engcam. Once we centered, we slewed to another FK5 star not too far from the bright star but could not find it. So we decided to try yet another bright star. Surprisingly, we could not find the bright star! Dan defocused since a big donut is easier to find and searched for a star by systematically offsetting and takig exposures (i.e. spiral pattern by hand), but no luck. We decided to go back to the first bright star we were able to find. We found the bright star again, but not centered at all and we had to use very different offset from last time to center it. We then tried for the closest FK5 again. This time the star showed up!! Why did this not work the first time?! BTW, there was no fiducial correction error at any time, so that is not the cause of our problem. The donuts we saw indicated that the collimation is good. We will check it again when we have the imager on. We focused and started a manual pointing model. With the current pointing model, we were afraid that we will not be able to gather pointing model in our usual automated way. Dan commanded the telescope in ALT in 10 degree increment to look for closest FK5 star and have the pointing correction recorded. Then he did similar in AZ creating a grid in AZ. During taking the data, we mistakenly (caused by a typo) slewed the telescope further than we meant to (instead of moving 20 degrees in AZ, we moved 130 degrees in AZ), but the star showed up on the chip. PHEW. It looks as if we could have taken the pointing model data the usual way. So we decided to take 70pt model. We took two pointing models, with and without allowing rotator to move. In TCC this corresponds to rottype=obj (rotator moves) and rottype=horizon (no rotator motions). This was part of Dan's pointing model test. The two models are called: telmod_20021003_obj.dat --> model with rottype=obj telmod_20021003_hor.dat --> model with rottype=horizon Both models showed similar RPM, 1.4" when rotator motion and 1.3" without it. Dan tested pointing with engCam using both models and showed the error was about 2.5" and random for both models. Not surprising since we always seem to be able to repeat pointing beautifully with the engCam when we check our pointing models. We did not have time to test the pointing with the spectrographs which would have been a better test. That will have to wait until tomorrow. Here are the detail of the pointing models with Dan's comments: This pointing model data set was taken with the rottype set to object. The model output was called telmod.dat;36 and was also copied to telmod_20021003_obj.dat in the same tdat directory. * * * * * * * * * * * * * * * * * * * * * * * TPOINT * * Telescope Pointing Analysis System * * Version 4.4-4 * * * * * * * * * * * * * * * * * * * * * * * * inmod tdat:telmod DKA300:[TCC.PTERR]PTERR_20020827.DAT;1 T 70 1.6537 IE -183.9152 IA -422.0261 AN -0.4958 AW -2.8693 HWCA2 +0.0470 HWSA2 -0.1478 HNCA1 +0.7635 HNSA1 +0.1092 CA +10.3378 PZZ1 -140.7807 ACEC +0.5788 ACES +0.0098 TX -2.5094 END * getdat pterr_20021003.dat;1 Read 72 data points * fix * fit coeff change value sigma 1 IE -183.92 2 IA -422.03 3 AN -0.50 4 AW -2.87 5 HWCA2 +0.05 6 HWSA2 -0.15 7 HNCA1 +0.76 8 HNSA1 +0.11 9 CA +10.34 10 PZZ1 -140.78 11 ACEC +0.58 12 ACES +0.01 13 TX -2.51 Sky RMS = 129.68 Popn SD = 129.68 * call t4014 * use * fit coeff change value sigma 1 IE -13.408 -197.32 0.757 2 IA +171.363 -250.66 0.831 3 AN +1.673 +1.18 0.262 4 AW -1.898 -4.77 0.257 5 HWCA2 -0.339 -0.29 0.338 6 HWSA2 +0.079 -0.07 0.348 7 HNCA1 +0.053 +0.82 0.392 8 HNSA1 -0.435 -0.33 0.391 9 CA +9.929 +20.27 0.616 10 PZZ1 -0.689 -141.47 2.515 11 ACEC +0.276 +0.85 0.473 12 ACES -1.062 -1.05 0.479 13 TX -0.127 -2.64 1.216 Sky RMS = 1.44 Popn SD = 1.59 * The data set for the fit below was taken with rottype set to horizon. The output model for the horizon data set is called telmod.dat;35 and is also copied to telmod_20021003_hor.dat * inmod tdat:telmod DKA300:[TCC.PTERR]PTERR_20020827.DAT;1 T 70 1.6537 IE -183.9152 IA -422.0261 AN -0.4958 AW -2.8693 HWCA2 +0.0470 HWSA2 -0.1478 HNCA1 +0.7635 HNSA1 +0.1092 CA +10.3378 PZZ1 -140.7807 ACEC +0.5788 ACES +0.0098 TX -2.5094 END * getdat pterr_20021003.dat;2 Read 72 data points * fit coeff change value sigma 1 IE -15.036 -198.95 0.694 2 IA +171.283 -250.74 0.759 3 AN +2.019 +1.52 0.239 4 AW -1.337 -4.21 0.235 5 HWCA2 +0.086 +0.13 0.309 6 HWSA2 -0.296 -0.44 0.318 7 HNCA1 +0.029 +0.79 0.358 8 HNSA1 -0.183 -0.07 0.357 9 CA +9.618 +19.96 0.563 10 PZZ1 -0.366 -141.15 2.279 11 ACEC +0.391 +0.97 0.431 12 ACES -0.738 -0.73 0.438 13 TX -0.466 -2.98 1.096 Sky RMS = 1.32 Popn SD = 1.46 We decided to test endNight to make sure it works. We used the cloudy night tapes since there was no data to archive. endNight failed because it could not find /astrolog/tmp_tape1. /astrolog/tmp_tape2 existed, but not tmp_tape1. We reran endNight with same results. Dan went to change to different tape and foud out that all lights on gang/spectro drive 1 were flashing. So probably iop could not talk to tape1 and could not talk to it. That is why "tmp_tape1" were not created and endNight failed. We filed a PR and left the tape drive in its flashing mode. ---=== IMAGING RUN SUMMARY ===--- Run Time Stripe Lambda Last Flavor Comments Start End Begin End Frame ------------------------------------------------------------------------- 3350 20:23Z 20:47Z 100 O 26.35 32.33 54 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 ===--- UT Exp Time flavor comment (S/N)^2 totals ========================================== b1 r1 b2 r2 ----- sequence 16412, plate -9999 ------- 19:54 16412 0.0 bias ----- sequence 16413, plate -9999 ------- 20:05 16413 0.0 bias 20:08 16414 0.0 bias 20:13 16415 0.0 bias 05:24 16418 0.0 bias -- 05:35 16419 0.0 bias | 05:37 16420 0.0 bias | 05:39 16421 0.0 bias | 05:42 16422 0.0 bias | 05:44 16423 0.0 bias | Part of monthly checkout biases 05:46 16424 0.0 bias | 05:48 16425 0.0 bias | 05:50 16426 0.0 bias | 05:52 16427 0.0 bias | 05:55 16428 0.0 bias | 05:57 16429 0.0 bias | 05:59 16430 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: JL Stays: JL ---=== 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 19:53Z 58 35 14 215 (SW) 173 - 20:26Z 57 34 18 201 (SSW) 218 - 20:58Z 54 32 12 185 (S) 187 - 21:30Z 56 32 19 194 (SSW) 191 - 22:02Z 58 31 17 209 (SSW) 218 - 22:35Z 56 31 13 201 (SSW) 354 - 23:07Z 56 32 23 204 (SSW) 379 - 23:39Z 55 30 18 213 (SSW) 487 - 00:15Z 53 28 24 213 (SSW) 656 - 00:52Z 50 28 21 204 (SSW) 595 - 01:24Z 50 28 17 198 (SSW) 742 - 01:54Z 51 27 26 189 (S) 739 - 03:47Z 54 23 24 183 (S) 229 - 04:56Z 54 26 24 191 (S) 150 - 05:28Z 54 27 28 193 (SSW) 168 - 06:00Z 52 28 22 188 (S) 159 - 06:33Z 51 27 12 217 (SW) 419 - 07:05Z 50 27 15 180 (S) 405 - 07:37Z 49 31 13 191 (S) 349 - 08:09Z 47 32 13 213 (SSW) 354 - 08:42Z 46 33 10 208 (SSW) 326 - 09:14Z 46 34 12 217 (SW) 391 - 09:46Z 45 34 9 250 (WSW) 359 - 10:23Z 44 34 13 241 (WSW) 343 - 10:59Z 44 35 9 266 (W) 321 - 11:31Z 43 35 7 281 (W) 414 - 12:04Z 41 37 7 279 (W) 418 - 12:36Z 41 38 14 296 (WNW) 380 - ---=== TELESCOPE STATUS ===--- around 00:00Z Fans on 06:15Z Opened enclosure 11:45Z Closed enclosure Telescope is at stow with engCam on. The building interlock, AZ/ALT slip interlocks are bypassed. Spectro 114.8lb Imager 165.6lb ---=== SOFTWARE USED ===--- IOP/SOP: v3_84_0a Watcher: v2_19_0 MCP: v5_13_4 TPM: tpm_v2_17_0 AstroDa: v14_47 TCC: 2.6.5 sdssProcedures: SoS: v4_9_10 hoggPT: v1_5_8 plate-mapper: v4_1_0 ---=== MIRROR NUMBERS ===--- PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A 0.0820 0.0890 Axial B 0.7910 0.8040 Axial C 0.0720 0.0790 Trans D -9.1060 -1.5180 Lateral E 1.8660 1.8220 Lateral F 1.4180 0.0000 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.: 5.3 Alt.: 29.990302 MIGS TONIGHT NOMINAL Axial A 1.5160 1.4640 Axial B 1.1510 1.1520 Axial C 1.1000 1.0770 Trans D -0.7010 -0.7160 GALILS Commanded: 1619876. 1555492. 1576361. -3400. -7900. Actual: 1619650. 1555250. 1576350. -3400. -7900. SETMIR VALUES SecDesOrient: 1257.00 0.00 -20.00 0.00 130.98 SecOrient: 1257.13 0.07 -20.02 -0.49 130.84 ---=== PROBLEMS IN DETAIL ===---