APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Friday October 31, 2003 (MJD 52944) ---=== OBSERVING TEAM ===--- Dan Long Scot Kleinman (swing) Jurek Krzesinski ---=== OBSERVING PLAN ===--- Science! ---=== OBSERVING SUMMARY ===--- Spectroscopy all night. Clouds precluded useful data first half. Slow clearing second half allowed us to finish 3 plates (1 1257, 5 1495, 9 1508). A fourth was declared done on advice of Brian Yanny (6 1152). Strange looking guider exposures at the start of the night were traced to a bad connection in the data cable between the camera and the electronics box. Cartridge 2 exhibits the same out of focus guider flats as last night (when other cartridges did not). Further investigation into why cartridge 2 is different from the rest in this regard is probably warranted. Three (probably moth related) too large to correct errors slewing in azimuth. ---=== OBSERVING LOG ===--- Afternoon checkout: ------------------- Imager -ok., DAs - ok., Spectrographs - ok, in focs. MIGs -ok. Telescope fiducialized. Night: ------ At the start of the night we noticed the bottom third of guider frames (for example see 0299 and 0300) are darker due to what appears to be alternating bright and dark columns. The dark columns are about 35 counts and the bright ones are about 150. Where there is significant signal within this region, the effect disappears. This puts fibers 1, 4, 7, and 11 in the strange region. Cable wiggling between the camera and the guider electronics box cured the problem at least for now. Thankyou Craig. It did not return the rest of the night. Cartridge 2 1521: 00:43Z Too large to correct in azimuth on first slew. Value about 6000. Thick cirrus, relatively bright moon, and poor seeing ( >2.5" ) conspiring against us at the start of the night. Useless signal levels in half hour exposures. With this much cloud and such poor seeing, we will probably have to wait until moonset to have a chance at useful data. Like last night, the guider flats for cartridge 2 were slightly out of focus compared with other cartridges. It is enough that in good seeing conditions it is possible one could miss best focus by an amount large enough to reduce efficiency. 06:20Z The moon has set and the clouds are thinning enough to make it worth trying again. Cartridge 5 1495: merged73 9.2 3.5 8.5 5.8 21.7 12.6 19.4 18.3 52943 ------------------- 30.9 16.1 27.9 24.1 06:24Z gotoField Guide stars on slew. 06:36Z 1st science Only need one useful exposure on this plate to declare it done. 06:59Z instChange Cartridge 9 1508: merged73 23.6 12.1 20.8 9.6 11.0 6.8 10.5 5.8 52943 ------------------- 34.6 18.9 31.3 15.4 07:03Z gotoField Guide stars on slew. 07:15Z 1st science Skies mostly clear now. Only patchy cirrus. 07:38Z 2nd science Done in two exposures 08:00Z instChange Cartridge 4 1629: photoz79 39.3 22.7 42.7 30.2 8.9 4.5 8.8 8.0 52942 ------------------- 48.2 27.2 51.5 38.2 08:04Z gotoField Guide stars on slew. 08:19Z 1st science 08:42Z 2nd science 09:05Z 3rd science 09:28Z 4th science 09:51Z 5th science plate expired. Looks like it will need one more exposure to finish 10:20Z instChange Cartridge 1 1257: taurus63 10:24Z gotoField FK5 needed. Found about 10 arcseconds away. 10:42Z 1st science Like the last taurus plate, the guide stars are extremely faint. We are using 1 minute guider exposures to get just enough signal for centroiding. Possilby related to the unusually faint guide stars is the unusually high guider efficiency reading - in excess of 200%! The non-standard set of objects is giving SoS indigestion, especially in spectrograph 1. 11:04Z 2nd science 11:21Z 3rd science The plate will be done with too little time to get data on another cartridge, so we are taking an additional exposure 11:37Z 4th science. 12:00Z Twilight. Closing up. ---=== IMAGING RUN SUMMARY ===--- Run Time Stripe Lambda Last Flavor Comments Start End Begin End Frame ------------------------------------------------------------------------- 4230 22:59Z 23:18Z 100 O 93.81 98.70 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):y QA Procedures Done (y/n):y b1-L: 1240 b1-R: 1037 b2-L: 1230 b2-R: 1208 r1-L: 1183 r1-R: 1231 rightmost fiber cut off at upper right. r2-L: 555 r2-R: 1562 2 rightmost fibers cut off at upper right. UT Exp Time flavor comment (S/N)^2 totals ========================================== b1 r1 b2 r2 ----- sequence 23096, plate -9999 ------- 23:00 23096 0.0 bias ----- sequence 23097, plate 1521 ------- 23:33 23097 0.0 bias 23:36 23098 10.0 flat 23:40 23099 2.0 arc 23:43 23100 2.1 arc 23:45 23101 2.1 arc ----- sequence 23102, plate 1521 ------- 0 0 0 0 00:15 23102 0.0 bias 01:26 23103 10.0 flat 01:29 23104 2.0 arc 02:03 23105 1800.1 target 02:36 23106 1800.1 target 03:09 23107 1800.1 target ----- sequence 23108, plate 1495 ------- 9.2 3.5 8.5 5.8 06:32 23108 10.0 flat 21.7 12.6 19.4 18.3 52943 06:34 23109 2.0 arc ------------------- 06:58 23110 1200.1 target 30.9 16.1 27.9 24.1 ----- sequence 23111, plate 1508 ------- 23.6 12.1 20.8 9.6 07:11 23111 10.0 flat 11.0 6.8 10.5 5.8 52943 07:14 23112 2.0 arc ------------------- 07:37 23113 1200.1 target 34.6 18.9 31.3 15.4 07:59 23114 1200.1 target ----- sequence 23115, plate 1629 ------- 39.3 22.7 42.7 30.2 08:15 23115 10.0 flat 8.9 4.5 8.8 8.0 52942 08:18 23116 2.0 arc ------------------- 08:41 23117 1200.1 target 48.2 27.2 51.5 38.2 09:04 23118 1200.1 target 09:27 23119 1200.1 target 09:50 23120 1200.1 target 10:13 23121 1200.1 target 10:16 23122 10.0 flat 10:19 23123 2.0 arc ----- sequence 23124, plate 1257 ------- ???? ???? 17.6 20.2 10:37 23124 10.0 flat 10:39 23125 2.0 arc 11:04 23126 1200.1 target 11:20 23127 800.1 target 11:36 23128 800.1 target 11:52 23129 800.1 target 11:55 23130 10.0 flat 11:57 23131 2.0 arc ---=== TELESCOPE OFFSETS AND SCALE I ===--- Time Instrument Az Alt Rot Scale pos offset pos offset pos offset ------------------------------------------------------------------------------ 01:32Z 2 1521 9.41 0.0036 56.95 0.0006 187.83 0.0194 1.000000 01:32Z 2 1521 9.37 0.0036 56.95 0.0006 187.80 0.0194 1.000000 06:37Z 5 1495 -37.92 0.0035 50.84 0.0007 148.80 -0.0215 1.000000 07:19Z 9 1508 -14.99 0.0053 56.43 -0.0006 167.38 0.0036 0.999970 08:24Z 4 1629 -15.88 0.0044 56.18 0.0025 166.63 -0.0121 1.000370 10:54Z 1 1257 280.62 0.0038 65.64 0.0063 113.73 0.0014 1.000470 ---=== TELESCOPE OFFSETS AND SCALE II ===--- ---=== DATA TAPE SUMMARY ===--- Goes: JL6950 Stays: JL6951 endNight rejoiced. ---=== FOCUS LOG ===--- setmir piston Temp Wind Time Inst scale M1 M2 Foc Az Alt (C) MPH Dir filt fwhm ------------------------------------------------------------------------------ 01:32Z 2 1521 1.00000 0 1260 100 9 56.9 9.4 9 178 - 2.4 06:40Z 5 1495 1.00000 0 1229 50 -39 50.5 9.8 15 188 - 1.5 07:19Z 9 1508 0.99997 296 1457 50 -15 56.4 10.1 20 189 - 1.6 08:24Z 4 1629 1.00037 -3653 -1812 50 -16 56.2 9.7 15 199 - 1.3 10:54Z 1 1257 1.00047 -4639 -2752 -50 281 65.7 9.9 18 180 - 1.6 ---=== WEATHER LOG ===--- Wind Time Temp F Dewp F MPH Direction Dust DIMM Sky 23:24Z 49 25 6 173 (S) 747 - Thick Cirrus 00:13Z 49 24 4 174 (S) 587 - Cirrus 00:45Z 48 23 14 157 (SSE) 640 - Cirrus 01:17Z 49 25 16 182 (S) 847 - Thick Cirrus 01:50Z 47 24 16 148 (SSE) 715 - Thick Cirrus 02:20Z 48 23 14 156 (SSE) 644 - Thick Cirrus 02:50Z 50 20 10 181 (S) 595 - Thick Cirrus 03:22Z 48 22 7 180 (S) 674 - Really Thick Cirrus 03:54Z 51 24 7 189 (S) 438 - Too Thick to be " 04:27Z 47 20 12 173 (S) 721 - Thick High Cloud 04:59Z 49 19 16 178 (S) 503 - Thick High Cloud 05:31Z 49 21 12 177 (S) 591 - Thick High Cloud 06:03Z 49 24 14 182 (S) 531 - Thick High Cloud 06:35Z 48 23 13 192 (SSW) 580 - Cirrus 07:08Z 50 23 18 195 (SSW) 570 - Thin Cirrus 07:39Z 49 23 16 191 (S) 530 - Patchy Cirrus 08:09Z 49 22 14 209 (SSW) 472 - Patchy Cirrus 08:41Z 49 23 17 184 (S) 533 - Patchy Cirrus 09:13Z 49 27 19 195 (SSW) 638 - Patchy Cirrus 09:45Z 49 23 18 198 (SSW) 682 - Patchy Cirrus 10:18Z 50 19 16 226 (SW) 560 - Patchy Cirrus 10:48Z 49 24 19 181 (S) 626 - Clear 11:18Z 49 26 20 172 (S) 628 - Clear 11:50Z 49 27 22 177 (S) 651 - Clear 12:23Z 48 27 17 172 (S) 617 - Clear ---=== TELESCOPE STATUS ===--- 23:55Z Doors Open, Fans On 00:25Z Enclosure Open 12:00Z Enclosure Closed, Fans Off Stowed at 30 deg alt, Cartridge 2 installed. Spectro auto-fill connected. Spectrograph dewar 12:30Z Dewar wt 256 lb Imager dewar (swapped on close) 12:30Z Dewar wt 311 lb No interlocks bypassed. ---=== SOFTWARE USED ===--- IOP/SOP: v3_120_0 Watcher: v2_24_0 MCP: v5_23_0 TPM: tpm_v2_33_0 AstroDa: v14_47 TCC: User added to message hub (tcc: 2.7.1) sdssProcedures: v1_77 SoS: v4_10_6 hoggPT: v1_6_9 plate-mapper: v4_3_1 ---=== MIRROR NUMBERS ===--- PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A 0.5430 0.5460 Axial B 0.6450 0.6290 Axial C 1.0880 1.0900 Trans D -8.6110 -8.5750 Lateral E 10.8839 10.9093 Lateral F 10.8585 10.8712 GALILS Commanded: 4600. -2850. 850. -7250. 19000. 18450. Actual: 4600. -2866. 866. -7275. 19011. 18425. 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.: 12.1 Alt.: 30.055896 MIGS TONIGHT NOMINAL Axial A 1.5140 1.5100 Axial B 1.1050 1.0990 Axial C 1.1130 1.1160 Trans D -0.8330 -0.8210 GALILS Commanded: 1628606. 1548065. 1574458. -3900. -8750. Actual: 1628641. 1548187. 1574504. -3899. -8726. SETMIR VALUES SecDesOrient: 1257.00 0.00 -25.00 0.00 146.27 SecOrient: 1256.95 -0.02 -25.02 0.25 146.57 ---=== PROBLEMS IN DETAIL ===---