Subject: 2.5m obslog 20071207 (MJD 54442) Date: Sat, 8 Dec 2007 05:54:19 -0700 (MST) From: snedden@apo.nmsu.edu (Steph Snedden) APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Friday December 7, 2007 (MJD 54442) ---=== OBSERVING TEAM ===--- Elena Malanushenko (day) Howard Brewington (observer) Stephanie Snedden (observer) ---=== OBSERVING PLAN ===--- Science! ---=== OBSERVING SUMMARY ===--- - Humidity. Never opened. - Spectro monthly biases and darks were done. - We found a leak in the GN2 imager fill pressurization system. We think it is fixed. ---=== OBSERVING LOG ===--- Afternoon: --------- All equipment are checked and work properly. Spectro collimation was set for 2.7C and no adjustment nessasary. Diskspace is 220G on /data and 209G on /file. No ventilation started because of high humidity. Night: ------ Our old friend, humidity, paid us another visit. Soon he will wear out his welcome. We completed the spectro monthly biases and darks. Biases: frames 47783 - 47807 Darks: frames 47808 - 47810 Results from apo_plotbias: Bias Filename 02% 05% 10% 50% 90% 95% 98% ------------------- ------ ------ ------ ------ ------ ------ ------ sdR-b1-00047783.fit -6.1 -3.9 -2.8 2.7 7.1 9.1 10.4 sdR-b2-00047783.fit -8.2 -6.2 -4.4 1.2 7.3 8.5 11.0 sdR-r1-00047783.fit -7.1 -5.2 -3.8 1.6 7.1 8.8 10.3 sdR-r2-00047783.fit -7.8 -6.1 -4.7 1.2 6.5 7.9 10.0 Done for 77.186643 sec. % Program caused arithmetic error: Floating underflow % Program caused arithmetic error: Floating illegal operand IDL 5.5a> apo_plotbias, 47783 Dark Filename 02% 05% 10% 50% 90% 95% 98% ------------------- ------ ------ ------ ------ ------ ------ ------ sdR-b1-00047808.fit -3.2 -1.0 0.7 5.9 12.2 14.3 16.6 sdR-b2-00047808.fit -4.6 -3.3 -0.9 5.5 12.6 14.3 16.8 sdR-r1-00047808.fit -4.6 -3.5 -1.5 4.5 10.5 12.5 15.1 sdR-r2-00047808.fit -5.3 -3.7 -1.6 4.1 10.4 12.5 15.2 Done for 73.660164 sec. % Program caused arithmetic error: Floating illegal operand IDL 5.5a> apo_plotbias, 47808 endNight rejoiced quickly. On closing up, we found a leak in the imager fill pressurization system. We think we fixed it. Details in the problems section. ---=== IMAGING RUN SUMMARY ===--- Run Time Stripe Lambda Last Flavor Comments Start End Begin End Frame ------------------------------------------------------------------------- 7222 22:15Z 22:39Z 100 O 119.27 125.34 55 ignore 7223 22:59Z 23:05Z 100 O 130.29 131.87 25 ignore 7224 01:18Z 01:35Z 100 O 165.05 169.46 41 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 47773, plate -9999 ------- 22:17 47773 0.0 bias ----- sequence 47774, plate 2840 ------- 22:28 47774 10.0 flat 22:31 47775 2.0 arc 22:41 47776 10.0 flat ----- sequence 47777, plate 2309 ------- 23:08 47777 10.0 flat 23:11 47778 2.0 arc 23:14 47779 3.0 arc 23:16 47780 3.0 arc ----- sequence 47781, plate -9999 ------- 23:26 47781 0.0 bias 23:30 47782 0.0 bias ----- sequence 47783, plate 2309 ------- 01:09 47783 0.0 bias 01:11 47784 0.0 bias 01:13 47785 0.0 bias 01:16 47786 0.0 bias 01:18 47787 0.0 bias 01:20 47788 0.0 bias 01:22 47789 0.0 bias 01:25 47790 0.0 bias 01:27 47791 0.0 bias 01:29 47792 0.0 bias 01:32 47793 0.0 bias 01:34 47794 0.0 bias 01:36 47795 0.0 bias 01:38 47796 0.0 bias 01:41 47797 0.0 bias 01:43 47798 0.0 bias 01:45 47799 0.0 bias 01:47 47800 0.0 bias 01:50 47801 0.0 bias 01:52 47802 0.0 bias 01:54 47803 0.0 bias 01:56 47804 0.0 bias 01:59 47805 0.0 bias 02:01 47806 0.0 bias 02:03 47807 0.0 bias 02:37 47808 0.0 dark 02:55 47809 0.0 dark 03:13 47810 0.0 dark ---=== TELESCOPE OFFSETS AND SCALE I ===--- Time Instrument Az Alt Rot Scale pos offset pos offset pos offset ------------------------------------------------------------------------------ ---=== TELESCOPE OFFSETS AND SCALE II ===--- ---=== 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 20:54Z 43 36 21 252 (WSW) 1977 - partly cloudy 21:26Z 41 35 14 242 (WSW) 1847 - ' 21:59Z 40 36 20 268 (W) 1927 - ' 22:30Z 42 36 21 269 (W) 1866 - ' 23:00Z 43 35 24 249 (WSW) 1816 - ' 23:31Z 40 35 22 233 (SW) 1827 - mostly clear 00:02Z 38 35 22 219 (SW) 1884 - ' 00:43Z 38 34 23 237 (WSW) 2054 - ' 01:15Z 38 36 24 222 (SW) 2328 - foggy 01:47Z 38 36 19 223 (SW) 2550 - ' 02:19Z 37 36 20 243 (WSW) 2454 - ' 02:51Z 37 36 18 243 (WSW) 2375 - ' 03:21Z 37 36 15 259 (W) 2472 - ' 03:52Z 36 35 17 241 (WSW) 2114 - ' 04:22Z 35 35 23 240 (WSW) 1847 - ' 04:52Z 35 35 14 234 (SW) 10122 - ' 05:22Z 35 35 17 240 (WSW) 48993 - ' 05:52Z 34 34 15 263 (W) 62881 - ' 06:22Z 34 34 11 256 (WSW) 49344 - ' 06:55Z 33 33 13 267 (W) 1470 - ' 07:27Z 33 32 15 273 (W) 1608 - ' 07:59Z 34 32 11 284 (WNW) 1648 - ' 08:31Z 33 32 13 261 (W) 1603 - ' 09:04Z 32 31 11 230 (SW) 1809 - mostly clear 09:36Z 32 31 17 209 (SSW) 1694 - ' 10:08Z 32 32 9 213 (SSW) 1667 - ' 10:40Z 32 31 13 191 (S) 1506 - ' 11:12Z 33 27 19 206 (SSW) 1201 - ' 11:45Z 33 29 16 203 (SSW) 1323 - ' 12:18Z 32 30 22 223 (SW) 1484 - partly cloudy ---=== TELESCOPE STATUS ===--- Never ventilated or opened. No interlocks bypassed. Status at: 12:50Z Telescope stowed at: 30,121,00 mount Instrument mounted: Cartridge 3 Counterweights at: 260 lbs LN2 autofill systems: Connected and turned on. 180L LN2 dewar scales: Spectro 271 lbs, 23 psi Imager 274 lbs, 20 psi ---=== SOFTWARE USED ===--- IOP/SOP: v4_38_0 Watcher: v2_36_0 MCP: v6_4_0 TPM: tpm_v3_5_0 AstroDa: v15_13_1 TCC: TCC 2.7.2.1 August 6 2004 sdssProcedures: v2_37 SoS: v5_1_8 plate-mapper: v4_3_1 ---=== MIRROR NUMBERS ===--- PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A -5.2150 -5.2130 Axial B -0.2124 -0.2135 Axial C -0.0016 -0.0016 Trans D 11.6430 11.6400 Lateral E 9.9695 9.9568 Lateral F 11.5443 11.5316 GALILS Commanded: 4600. -2000. 2650. -9300. -9800. -9800. Actual: 4600. -2000. 2650. -9300. -9800. -9800. SETMIR VALUES PriDesOrient: 0.00 0.00 0.00 0.00 0.00 PriOrient: 0.00 0.00 0.00 0.00 0.00 SECONDARY: ---------- Focus: 0.00 Air Temp.: 5.6 Alt.: 29.999997 MIGS TONIGHT NOMINAL Axial A 0.8020 0.7973 Axial B 0.6125 0.6041 Axial C 0.5476 0.5425 Trans D 0.5955 0.5999 GALILS Commanded: 1637589. 1645841. 1469167. -12250. -11850. Actual: 1637658. 1645862. 1469294. -12275. -11866. SETMIR VALUES SecDesOrient: 1257.00 60.00 -9.43 -50.00 240.90 SecOrient: 1256.94 60.03 -9.42 -49.89 240.40 ---=== PROBLEMS IN DETAIL ===--- Imager pressurization system GN2 leak: ------------------------------------- At the end of the night, the GN2 bottle was empty and the pressure about 12 psi at the 180-l dewar. We swapped to the spare GN2 bottle and saw there was a leak because the float valve went up when we opened the GN2.Turning off the inline valve next to the doghouse stopped the leak. We then were able to trace it to the connector at the 180-l dewar itself, verified when Howard's ear heard the faint hiss. A little torqueing of the connector at the gas line sealed the leak, hopefully permanently. Bias: Filename 02% 05% 10% 50% 90% 95% 98% ------------------- ------ ------ ------ ------ ------ ------ ------ sdR-b1-00047773.fit -5.4 -4.2 -2.1 2.3 7.8 8.9 11.1 sdR-b2-00047773.fit -8.1 -6.3 -4.4 1.3 7.6 9.1 11.4 sdR-r1-00047773.fit -6.9 -4.9 -3.8 2.1 8.1 9.3 11.5 sdR-r2-00047773.fit -7.1 -6.1 -4.0 1.3 7.6 9.7 11.8 ----------------- Spectro collimated for 2.7C, no collimation adjustnment nessasary.