APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Sunday November 2, 2003 (MJD 52946) ---=== OBSERVING TEAM ===--- Night: Howard Brewington, Pete Newman Visitors: Lots of Colorado University folk. ---=== OBSERVING PLAN ===--- Science - last full science night of the dark run. ---=== OBSERVING SUMMARY ===--- First 5 hours lost to moonlight, then one plate done (1511), good data on another (1255), then imaging on 39S over -47 <= lambda <= -33 (plus ramp up, so we hope this is enough to reduce). Final hour of darkness lost to high winds. The imager safety latch display is confusing - see problem section #2, which requires an answer from an enginee. As there is only one moony night left this run, we deliberately chose NOT to swap the finished plate. ---=== OBSERVING LOG ===--- Afternoon: During preflight checks, we discovered how to restart sdsshost from maintenance mode, after we accidentally omitted the "-i6" parameter from the routine shutdown command. Pending approval from Craig that this is not a security breach, we will folklore the process. During spectro focus checks (though not noticed until later) watcher reported VME errors from the spectro cameras on the third arc exposures (frame 23167). See problem section #1 for details. Spectrographs were in focus. Night: Lots of moon, so we start with spectroscopy, unfortunately with a lot of plates with fields need the Moon. Guide stars acquired on gotoField unless stated otherwise. Observing sequence: 00:58Z Plate 1107, cartridge 2. No useful signal in 4 exposures, 6300s. Merged program requiring standard survey S/N. FK5 found easily during twilight. This plate (as other early evening plates) is close to the Moon: the first 15 minute exposure returned a (S/N)^2 of 1.1, and 30 mins 1.7. And all exposures failed the SoS sky level criterion. We kept trying but logged this time to "Other weather problem". We finally gave up on this plate and moved on. 03:35Z Plate 1487, cartridge 7. No useful signal in 3 exposures, 4200. Merged program requiring standard survey S/N. Once more the Moon rules the night. We move on, to a plate further from the Moon on the sky. 05:18Z Plate 1511, cartridge 9. Done in 4 exposures, 4800s. FK5 needed but easily found. Merged program requiring standard survey S/N. 07:13Z Plate 1255, cartridge 4. Not done in 2 exposures, 2400 s. Taurus program requiring standard survey S/N. Guide stars on the gotoField, but they were lost during a large scale change of 0.047 per cent (this plate drilled for -2C, previous for +11C). FK5 star found 8 arcsec west. The Moon set under photometric skies before plate 1255 could be finished, so we switched to imaging. While mounting the imager, we noted a problem with the safety latch status display (or perhaps the latches) - see problem #2 for details. See imaging sections below for run details. 03:22Z Rapidly degrading seeing then rapidly increasing wind speed, so we closed. Ororgraphic cloud followed soon after. endNight is running. We dismounted the imager for cartridge 2. There is dead-animal smell in the doghouse...again. Counterweight 4 (SW corner) squeaks when going up to upper limit. ---=== IMAGING RUN SUMMARY ===--- Run Time Stripe Lambda Last Flavor Comments Start End Begin End Frame ------------------------------------------------------------------------- 4232 23:46Z 00:01Z 100 O 107.64 111.47 39 ignore doghouse bias 4233 08:45Z 10:23Z 39 S -51.36 -26.77 178 science 4234 10:37Z 10:57Z 100 O -89.33 -84.12 49 bias ---=== IMAGING RUN DETAILS ===--- Seeing quality determined by seeingRun. Lambdas are on boresight. Run 4233 - 39 S -47 <= lambda <= -33 ------------------------------------ Frame Lambda Comments ----- ------ ------------------------------------------------------ 8 -51.2 Focus converged 13 -50.5 Skippy happy 23 -49 Start ramp up 33 -47.7 Nice interacting pair of galaxies in dewar 6 r chip. 36 -47 Start science 97 -37.4 Short excusion to broader seeing, though seeingRun flagged the whole section as good. 130 -33 Seeing good -> bad. 140 -31.4 What looks like a polar galaxy (ring almost perpendicular to disk) seen in dewar 1 r chips near left border. 142 -31.1 Dewar 5 r chip: cartwheel-type spiral with large external ring. 170 -27 endDrift: stopped by high winds. We hope that when the ramp up is included, this represents a reducible segment. Run 4234 - Bias, on telescope, T-bars unlatched ----------------------------------------------- ---=== SKIPPY RESULTS ===--- Run Frame nFrames stars muErr muRms nuErr nuRms rot az el --------------------------------------------------------------------------- 4233 13 4 166 -4.300 0.435 1.800 0.462 -0.00115 71 57 4233 24 4 138 -3.700 0.227 2.400 0.390 -0.00127 68 58 4233 77 4 69 -3.500 0.117 3.500 0.133 -0.00022 54 60 4233 130 4 85 -4.300 0.138 4.300 0.155 -0.00084 40 59 ---=== LTMATCH RESULTS ===--- Run Field nFields alt az nGood rowMean rowSig colMean colSig rot ------------------------------------------------------------------------ 4233 35 1 58 116 37 -0.562 0.209 1.884 0.285 -0.00633 4233 35 1 58 116 50 -0.295 0.195 2.008 0.229 -0.00675 4233 35 1 58 116 55 0.012 0.168 2.066 0.226 -0.00694 4233 35 1 58 116 44 0.315 0.185 1.978 0.195 -0.00665 4233 35 1 58 116 38 0.497 0.135 1.817 0.300 -0.00611 4233 53 1 59 121 48 -1.151 0.179 1.608 0.168 -0.00541 4233 53 1 59 121 41 -0.748 0.207 1.725 0.170 -0.00580 4233 53 1 59 121 60 -0.449 0.223 1.729 0.193 -0.00581 4233 53 1 59 121 49 -0.271 0.186 1.795 0.232 -0.00604 4233 53 1 59 121 28 -0.151 0.210 1.669 0.237 -0.00561 4233 88 1 59 131 22 -1.531 0.094 0.944 0.266 -0.00317 4233 88 1 59 131 44 -1.181 0.165 1.279 0.311 -0.00430 4233 88 1 59 131 31 -0.912 0.198 1.261 0.280 -0.00424 4233 88 1 59 131 29 -0.660 0.245 1.303 0.173 -0.00438 4233 88 1 59 131 28 -0.329 0.168 1.182 0.197 -0.00397 4233 106 1 59 135 29 -1.947 0.223 1.625 0.302 -0.00546 4233 106 1 59 135 36 -1.608 0.202 1.656 0.271 -0.00557 4233 106 1 59 135 34 -1.247 0.236 1.643 0.274 -0.00553 4233 106 1 59 135 42 -1.103 0.256 1.663 0.286 -0.00559 4233 106 1 59 135 28 -0.699 0.205 1.581 0.288 -0.00532 4233 141 1 58 144 24 -2.543 0.466 2.006 0.293 -0.00675 4233 141 1 58 144 22 -2.231 0.393 2.064 0.221 -0.00694 4233 141 1 58 144 32 -1.799 0.378 2.160 0.291 -0.00726 4233 141 1 58 144 20 -1.621 0.431 2.192 0.223 -0.00737 4233 141 1 58 144 28 -1.268 0.371 2.107 0.305 -0.00708 4233 159 1 56 147 13 -1.708 0.359 1.031 0.389 -0.00347 4233 159 1 56 147 16 -1.662 0.355 1.273 0.369 -0.00428 4233 159 1 56 147 15 -1.150 0.375 1.378 0.390 -0.00463 4233 159 1 56 147 13 -1.015 0.390 1.242 0.472 -0.00417 4233 159 1 56 147 13 -0.504 0.425 1.433 0.550 -0.00482 ---=== 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 23163, plate -9999 ------- 23:38 23163 0.0 bias ----- sequence 23164, plate 1585 ------- Focus checks - ignore 00:05 23164 10.0 flat 00:07 23165 2.0 arc 00:10 23166 2.1 arc 00:13 23167 2.1 arc ----- sequence 23168, plate 1107 ------- All useless - ignore 00:44 23168 0.0 bias 01:11 23169 10.0 flat 01:13 23170 2.0 arc 01:37 23171 900.1 target 02:10 23172 1800.1 target 02:43 23173 1800.1 target 03:16 23174 1800.1 target ----- sequence 23175, plate 1487 ------- All useless - ignore 03:46 23175 10.0 flat 03:49 23176 2.0 arc 04:13 23177 1200.1 target 04:36 23178 1200.1 target 05:13 23179 1800.1 target ----- sequence 23180, plate 1511 ------- 18.5 17.2 18.0 21.7 DONE 05:33 23180 10.0 flat 05:36 23181 2.0 arc 05:55 23182 900.1 target 06:23 23183 1500.1 target 06:51 23184 1500.1 target 07:09 23185 900.1 target ----- sequence 23186, plate 1255 ------- 12.4 15.4 19.4 8.8 Not done 07:31 23186 10.0 flat 07:34 23187 2.0 arc 07:59 23188 1200.1 target 08:22 23189 1200.1 target ---=== TELESCOPE OFFSETS AND SCALE I ===--- Time Instrument Az Alt Rot Scale pos offset pos offset pos offset ------------------------------------------------------------------------------ 01:18Z 2 1107 22.01 0.0040 55.19 0.0007 198.30 0.0207 1.000180 03:52Z 7 1487 2.01 0.0042 57.23 -0.0003 181.60 -0.0168 1.000020 06:17Z 9 1511 20.49 0.0054 55.47 -0.0017 197.06 0.0011 0.999980 07:39Z 4 1255 65.71 0.0032 74.66 0.0008 238.08 0.0129 1.000480 ---=== TELESCOPE OFFSETS AND SCALE II ===--- ---=== DATA TAPE SUMMARY ===--- Goes: JL6930-JL6935, JL6955 Stays: JL6936-JL6941, JL6956 ---=== FOCUS LOG ===--- setmir piston Temp Wind Time Inst scale M1 M2 Foc Az Alt (C) MPH Dir filt fwhm ------------------------------------------------------------------------------ 01:18Z 2 1107 1.00018 -1778 -206 100 22 55.2 9.6 18 208 BG38 1.8 03:52Z 7 1487 1.00002 -198 1046 50 2 57.2 9.7 20 198 BG38 1.5 06:17Z 9 1511 0.99998 198 1403 75 20 55.5 7.6 20 225 BG38 1.5 07:39Z 4 1255 1.00048 -4739 -2674 125 66 74.7 6.9 24 223 BG38 1.5 ---=== WEATHER LOG ===--- Wind Time Temp F Dewp F MPH Direction Dust DIMM Sky 23:32Z 52 21 23 221 (SW) 414 - Cirrus to S 00:04Z 50 22 22 224 (SW) 736 - " 00:36Z 49 24 16 211 (SSW) 946 - Clear 01:09Z 48 23 16 205 (SSW) 1088 - " 01:39Z 49 23 13 195 (SSW) 689 - " 02:12Z 49 25 19 195 (SSW) 917 - " 02:45Z 49 24 18 201 (SSW) 867 - " 03:17Z 49 22 21 202 (SSW) 708 - " 03:50Z 49 22 18 202 (SSW) 660 - " 04:22Z 49 21 22 210 (SSW) 658 - " 04:53Z 48 22 21 212 (SSW) 1496 - " 05:25Z 46 22 18 226 (SW) 1347 - " 05:55Z 46 21 19 219 (SW) 1385 - " 06:25Z 46 23 21 212 (SSW) 884 - " 06:55Z 45 23 24 228 (SW) 620 - " 07:26Z 45 24 23 237 (WSW) 390 - " 08:00Z 45 24 22 220 (SW) 365 - " 08:32Z 45 24 23 215 (SW) 340 - " 09:04Z 45 26 26 211 (SSW) 311 - " 09:37Z 44 28 26 225 (SW) 401 - " 10:09Z 43 33 29 218 (SW) 531 - " 10:42Z 42 33 28 228 (SW) 585 - Patchy cloud 11:14Z 42 33 20 243 (WSW) 631 - ---=== TELESCOPE STATUS ===--- 00:20Z Doors open, fans on. Outside temp ~9.5C, fork ambient ~11C. 00:30Z Enclosure off. 10:22Z Enclosure on - high wind. No interlocks bypassed. Status at 11:39Z: Telescope stowed at: 30 deg Instrument mounted: Cartridge 2 Counterweights at: 270 Autofill systems: On 180L LN2 dewar scales: Spectro 92 lb, 16 psi (filling) Imager 200 lb, 20 psi ---=== SOFTWARE USED ===--- IOP/SOP: v3_120_0 Watcher: v2_24_0 MCP: v5_23_0 TPM: tpm_v2_33_0 AstroDa: v14_47 TCC: TCC 2.7.1 July 22 2003 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 0.5400 0.5460 Axial B 0.6420 0.6290 Axial C 1.0890 1.0900 Trans D -8.6070 -8.5750 Lateral E 10.8712 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.: 10.9 Alt.: 29.998394 MIGS TONIGHT NOMINAL Axial A 1.5130 1.5100 Axial B 1.1050 1.0990 Axial C 1.1120 1.1160 Trans D -0.8290 -0.8210 GALILS Commanded: 1628682. 1548090. 1574584. -3900. -8750. Actual: 1628641. 1548187. 1574504. -3899. -8726. SETMIR VALUES SecDesOrient: 1257.00 0.00 -25.00 0.00 146.27 SecOrient: 1257.01 -0.05 -25.03 0.24 146.59 ---=== PROBLEMS IN DETAIL ===--- Problem #1 - VME errors from the spectrographs ============================================== Watcher reported the following. Fram 23167 is a Hartman arc exposure during preflight checks. Status Inactive Run 52946 Frame 23167 dsc E trcErr WRONG num of pix?? for (sr<<16)|ccd:0x00000001 rowIdx:74 (dsc_E_trcErr WRONG num of pix?? for (sr<<16)|ccd:0x00000001 rowIdx:74 : 2003-11-03 00:44:11Z ) dsc E trcErr WRONG num of pix?? 2124 should be 2128 (dsc_E_trcErr WRONG num of pix?? 2124 should be 2128 : 2003-11-03 00:44:11Z ) dsc E trcErr WRONG num of pix?? for (sr<<16)|ccd:0x00000000 rowIdx:74 (dsc_E_trcErr WRONG num of pix?? for (sr<<16)|ccd:0x00000000 rowIdx:74 : 2003-11-03 00:44:11Z ) I am not sure how to identify which CCD had the problem. We cleared the watcher flags and continued. The problem did not recur. Problem #2 - Imager safety latch display ======================================== When we mounted the imager, we noted that the status lights on the latch control panel showing the state of the safety latches seems to be reversed. When the imager was NOT engaged, the lamps show the latches to be "on". When the imager IS engaged, they are shown "off". Is this misunderstanding the display, or is the status display inverted, or are the safeties themselves toggeled the wrong way? If it's the last, then how do we toggle them back?