APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Monday April 4, 2005 (MJD 53465) ---=== OBSERVING TEAM ===--- Jurek Krzesinski Howard Brewington Mike Harvanek (swing) ---=== OBSERVING PLAN ===--- Science! ---=== OBSERVING SUMMARY ===--- Dust and high wind kept us closed most of the night. We switched on the HVAC to keep the higher pressure inside the enclosure, but even so, the dust level climbed up in there up to 18000 (outside was 40000)! Could the day crew clean the mirrors please? [French called and he said that the mirrors will be cleaned today]. When we opened the seeng was very bad and mirrors were not in equilibrum, neverles we got some photons on one plate: 1675. PROBLEMS: -------- On the last exposrue (already in twilight) Landru got frozen and we had to use the copilot computer to read out the exposure. Unfortunately Jurek issued endStare without loadC 7 1675 and the exposure 31738 was reduced as bias. To see how much s/n we've got, we changed the following fits file keywords for that exposure: FLAVOR=[bias] -> ['science'] RADEG=[-9.9990000000e+03] -> [2.2176520000e+02] DECDEG=[-9.9990000000e+03] -> [4.6218260000e+01] PLATEID=[-9999] -> [1675] TILEID=[-9999] -> [1180] but sos did not reduce the exposure, because it found that flat field screens were not closed while the exposure was read out, so we changed that keyword too: apofix, 31738, 'ffs', '0' and that worked. Sos reported s/n > 2, but please tell us if the FF should have been closed to call that exposure good? ---=== OBSERVING LOG ===--- Afternoon: ---------- Based on the temperatures forecast for this evening, no spectro collimation adjustments were performed. Numbers are in the Problems section. High wind and dust prevented early ventilation. No problems to report. Night: ------ 10:00Z Most of the night was lost due to the bad weather conditions (high wind and dust. So after we opened, the seeing is very bad and the mirrors are totaly out of equilibrum. But maybe we can get some photons? 10:23Z Cart 7 plt 1675 mounted. Stars on go to field. 11:40Z Landru got frozen on Howard. He logged on host from the other computer and killed all iop sessions (this way Jurek could regrab instrument and force the exposure to read out, then took post calib for that plate). Landru had to be reset. All the rest end night duties were done from the second observer computer. When we checked the sos, we sow that the science exposure was read out as an BIAS exposure. That happened because Jurek did not issued loadC 7 1675 command from the sop he was reading out that exposure. So he had to changed manualy the fits file keywards and redo sos exposure 31738 to see how much signal we collected. But be aware that there are plenty of wrong keywords on that exposure. After that sos reported s/n > 2 for the exposure 31738. endNight finished ok. ---=== IMAGING RUN SUMMARY ===--- Run Time Stripe Lambda Last Flavor Comments Start End Begin End Frame ------------------------------------------------------------------------- 5229 23:43Z 00:02Z 100 O -101.72 -96.81 46 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): QA Procedures Done (y/n): UT Exp Time flavor comment (S/N)^2 totals ========================================== b1 r1 b2 r2 ----- sequence 31726, plate -9999 ------- 23:39 31726 0.0 bias ----- sequence 31727, plate 1972 ------- 23:50 31727 10.0 flat collimation 23:52 31728 2.0 arc collimation 23:57 31729 2.1 arc collimation 23:59 31730 2.1 arc collimation ----- sequence 31731, plate -9999 ------- 00:48 31731 0.0 bias 00:51 31732 0.0 bias 00:55 31733 0.0 bias ----- sequence 31734, plate 1675 ------- 10:30 31734 10.0 flat 10:32 31735 2.0 arc 11:01 31736 1200.1 target 11:23 31737 1121.6 target ----- sequence 31738, plate -9999 ------- 11:47 31738 900.1 bias ----- sequence 31739, plate 1675 ------- 11:51 31739 2.0 arc 11:53 31740 10.0 flat ---=== TELESCOPE OFFSETS AND SCALE I ===--- Time Instrument Az Alt Rot Scale pos offset pos offset pos offset ------------------------------------------------------------------------------ 10:40Z 7 1675 228.57 0.0040 65.80 0.0030 65.49 -0.0074 1.000420 ---=== TELESCOPE OFFSETS AND SCALE II ===--- ---=== DATA TAPE SUMMARY ===--- Goes: JL8428 Stays: JL8429 ---=== FOCUS LOG ===--- setmir piston Temp Wind Time Inst scale M1 M2 Foc Az Alt (C) MPH Dir filt fwhm ------------------------------------------------------------------------------ 10:40Z 7 1675 1.00042 -4145 -1594 700 229 65.8 -2.5 16 316 gdr 2.7 ---=== WEATHER LOG ===--- Wind Time Temp F Dewp F MPH Direction Dust DIMM Sky 23:20Z 52 8 32 240 (WSW) 3151 - 23:52Z 51 7 35 265 (W) 3647 - 00:22Z 49 6 36 265 (W) 5751 - 00:52Z 48 6 22 253 (WSW) 6729 - 01:30Z 46 8 22 251 (WSW) 5739 - 02:01Z 44 8 32 232 (SW) 3617 - 02:33Z 44 8 36 243 (WSW) 2922 - 03:05Z 45 8 48 254 (WSW) 4672 - 03:37Z 44 8 36 260 (W) 3531 - 04:10Z 43 7 36 254 (WSW) 3483 - 04:42Z 41 4 21 266 (W) 38778 - 05:14Z 40 5 24 294 (WNW) 23671 - 05:46Z 38 5 26 273 (W) 13125 - 06:18Z 37 8 23 267 (W) 13546 - 06:51Z 36 9 25 263 (W) 16216 - 07:23Z 35 12 26 293 (WNW) 10716 - 07:55Z 34 12 21 269 (W) 8088 - 08:27Z 33 13 32 275 (W) 5844 - 08:59Z 31 13 17 301 (WNW) 6467 - 09:32Z 29 9 16 345 (NNW) 3581 - 10:04Z 28 10 11 355 (NNW) 2638 - 10:37Z 27 12 8 342 (NNW) 2145 - 11:09Z 27 13 13 308 (NW) 2286 - 11:41Z 26 14 23 312 (NW) 1768 - 12:13Z 25 12 11 334 (NNW) 1127 - 12:46Z 25 10 15 351 (NNW) 814 - ---=== TELESCOPE STATUS ===--- 10:00Z We opened, but not refilled since for two more observing hours it should be enough LN2 in dewars. 12:05Z Telescope closed hoses hooked up, spectro dewars refilled. ---=== SOFTWARE USED ===--- IOP/SOP: v3_143_1 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 0.5750 0.5770 Axial B 0.5890 0.5880 Axial C 0.9450 0.9460 Trans D -8.1990 -8.1960 Lateral E 10.0457 10.0330 Lateral F 11.5951 11.5951 GALILS Commanded: 4300. -1900. 2850. -13300. -7600. -7650. Actual: 4299. -1917. 2868. -13303. -7614. -7660. 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.: 10.9 Alt.: 30.248781 MIGS TONIGHT NOMINAL Axial A 1.5700 1.5680 Axial B 1.0480 1.0460 Axial C 1.1610 1.1590 Trans D -0.2100 -0.2020 GALILS Commanded: 1619176. 1604858. 1528506. -13800. -9950. Actual: 1619188. 1604973. 1528571. -13820. -9964. SETMIR VALUES SecDesOrient: 1257.00 27.97 -10.00 -90.00 257.89 SecOrient: 1256.95 27.96 -10.03 -89.96 257.50 ---=== PROBLEMS IN DETAIL ===--- Spectro collimation details: ---------------------------- Initial sp1 Coll_motor_A 2799 Coll_motor_B 2794 Coll_motor_C 4178 Initial sp2 Coll_motor_A 6000 Coll_motor_B 4600 Coll_motor_C 3300 im> caget tpm_TM_PMSSAvg tpm_TM_TelairAvg.VALA tpm_TM_PMSSAvg 8.62214 tpm_TM_TelairAvg.VALA 9.9075 Based on the forecast temperature for tonight, no adjustments were performed. Spectro collimation remains set for +5 C. Final collimate output COLLIMATE: Mean offset = 0.10 pix COLLIMATE: Camera b1 appears to be IN-FOCUS (|mean| < 0.15 pix) COLLIMATE: Mean offset = 0.05 pix COLLIMATE: Camera b2 appears to be IN-FOCUS (|mean| < 0.15 pix) COLLIMATE: Mean offset = -0.45 pix COLLIMATE: Camera r1 appears to be OUT-OF-FOCUS (|mean| > 0.15 pix) COLLIMATE: Predict (red) piston movement of 4105 steps for spectro-1 COLLIMATE: Mean offset = -0.10 pix COLLIMATE: Camera r2 appears to be IN-FOCUS (|mean| < 0.15 pix) COLLIMATE: Predict (red) piston movement of 946 steps for spectro-2