APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Tuesday May 31, 2005 (MJD 53522) ---=== OBSERVING TEAM ===--- John Barentine Atsuko Nitta Kleinman Visitor: French Leger ---=== OBSERVING PLAN ===--- Science! ---=== OBSERVING SUMMARY ===--- We took advantage of a nice, clear, photometric night to do extensive imaging and an hour of spectroscopy right at the end. Finished Stripe 17S (-24 < lambda < +16) and part of 39N (+17 < lambda < +36) before moonrise. Finished the night with two science exposures on SEGUE Plate 2181. ---=== OBSERVING LOG ===--- Afternoon --------- We are Stephless for checkout (find us new observers, Steph!) Checkout went fine. No changes were made to spectro focus; see Problems section for details. I did notice that the fill line leading to sp2 from its dewar was leaking a bit of nitrogen at the quick disconnect. See Problems. Night ----- It was clear and photometric near sunset, so we put the imager on the telescope. During twilight we got an on-telescope bias (Run 5359) which appears good. 03:10Z Run 5360 (Stripe 17S, startLambda=-38) We began well before the ramp since end of twilight was still 30 minutes away. Seeing was very good to start with --- DIMM reported values consistently near 0.5 arcsec. Science began at lambda=-24, but skippy was happy and we were in focus well before the ramp (by frame 55). Seeing was in spec throughout except for the first 49 frames which seeingRun called bad apparently because of the first several frames being in bright twilight. We believe all of the frames past 25 are good, though that extends well before the ramp. (Run 5361 was labeled "ignore" because we did the scanStripe incorrectly by giving it the wrong startLambda for the beginning of science.) 07:05Z Run 5362 (Stripe 39N, startLambda=+13.5) In focus from the beginning of the run, skippy happy by frame 10. Seeing was in spec throughout the run. We knew the moon was going to rise before we finished the stripe, so we looked for moonrise affecting the data by montoring sky levels in astroline. Moonrise occurred at about Frame 158 by time, but we did not see an enhancement in sky levels until about 30 minutes after moonrise (Frame 204) at which we ended the drift. We declared the run "good" such that it would all get reduced. Please advise as to how much of the run is considered acceptable. Skippy picked up an exceedingly large value of muErr when run on Frame 159 for 4 frames -- maybe we ran over a moth? -- but this was the only odd value. See Skippy section for complete details. Incidentally, for future reference, at what sky levels ought we to quit? Was our strategy valid, or will all the post-moonrise data be discarded? 09:10Z Run 5363 (Stripe 39N, startLambda=44.5) Monthly imager donuts for 22 frames. Focus values (approximate) are -400 at Frame 10, -700 at Frame 15, and -100 at Frame 20. Data have been transferred to phoenix for JEG. 09:17Z Run 5364 (On-telescope bias) Switched to spectroscopy for the last ~1 hour of the night. 09:52Z Cart 1 Plate 2181 (tile 8053, segue117). GSOGTF. Seeing was still very good -- with some focus tweaks, we got the seeing measurements in all of the guide fibers to bottom out at 0.98 arcsec (DIMM was reading 0.6 arcsec at the time). This plate was recorded as "0" in SoS (see Problems section). We obtained two science exposures on this plate which took us right up to the start of twilight and a few minutes beyond. This provided enough signal to consider the plate finished, but we need an additional exposure so we left this plate on the telescope. Closed up for the night at 10:45Z. ---=== IMAGING RUN SUMMARY ===--- Run Time Stripe Lambda Last Flavor Comments Start End Begin End Frame ------------------------------------------------------------------------- 5358 00:18Z 00:37Z 100 O -36.55 -31.86 45 ignore 5359 02:39Z 03:02Z 100 O -1.37 4.50 53 bias 5360 03:09Z 07:01Z 17 S -37.59 20.57 402 science 5361 07:04Z 07:05Z 39 N 20.32 20.73 16 ignore 5362 07:08Z 09:06Z 39 N 13.70 43.38 212 science 5363 09:07Z 09:17Z 39 N 43.63 46.03 30 engineering 5364 09:19Z 09:35Z 100 O 98.87 102.85 39 bias ---=== IMAGING RUN DETAILS ===--- ---=== SKIPPY RESULTS ===--- Run Frame nFrames stars muErr muRms nuErr nuRms rot az el --------------------------------------------------------------------------- 5360 25 4 49 -8.700 0.164 -0.400 0.081 -0.00861 256 45 5360 58 4 31 -10.000 0.819 0.000 0.475 -0.01000 257 46 5360 76 4 39 -11.100 0.196 -0.200 0.164 -0.00730 258 46 5360 100 4 48 -10.300 0.206 -0.500 0.130 -0.00764 258 46 5360 128 4 41 -11.400 0.224 -0.800 0.090 -0.00761 259 47 5360 181 4 45 -10.800 0.187 -1.200 0.143 -0.00814 260 47 5360 234 4 47 -10.300 0.226 -1.700 0.150 -0.00773 260 48 5360 286 4 52 -9.400 0.178 -2.300 0.128 -0.00753 259 48 5360 340 4 37 -8.900 0.190 -3.200 0.101 -0.00801 259 48 5360 391 4 42 -9.500 0.149 -3.800 0.106 -0.00779 258 48 5362 12 2 42 -6.800 0.124 2.900 0.135 -0.00112 344 52 5362 12 4 80 -6.900 0.120 2.900 0.127 -0.00094 344 52 5362 17 4 88 -6.500 0.135 2.900 0.145 -0.00057 344 52 5362 63 4 93 -7.100 0.096 2.300 0.138 0.00081 342 58 5362 115 4 58 -7.600 0.109 0.900 0.152 0.00454 335 63 5362 159 4 77 -2165.000 0.112 -0.800 0.114 0.00644 325 66 5362 166 4 78 -9.700 0.145 -1.200 0.162 0.00726 323 67 ---=== LTMATCH RESULTS ===--- Run Field nFields alt az nGood rowMean rowSig colMean colSig rot ------------------------------------------------------------------------ 5360 34 1 45 283 17 -1.626 0.172 1.960 0.125 -0.00659 5360 34 1 45 283 24 -1.340 0.132 2.018 0.152 -0.00679 5360 34 1 45 283 22 -0.614 0.176 2.303 0.216 -0.00774 5360 34 1 45 283 13 -0.224 0.161 2.177 0.128 -0.00732 5360 34 1 45 283 13 0.287 0.120 2.364 0.164 -0.00795 5360 51 1 46 283 11 -1.026 0.163 1.061 0.217 -0.00357 5360 51 1 46 283 17 -0.431 0.138 1.300 0.109 -0.00437 5360 51 1 46 283 13 0.136 0.136 1.451 0.280 -0.00488 5360 51 1 46 283 17 0.595 0.238 1.557 0.271 -0.00524 5360 51 1 46 283 18 0.964 0.127 1.425 0.165 -0.00479 5360 86 1 46 282 16 -1.323 0.262 1.055 0.201 -0.00355 5360 86 1 46 282 15 -1.015 0.254 1.106 0.127 -0.00372 5360 86 1 46 282 12 -0.303 0.322 1.422 0.136 -0.00478 5360 86 1 46 282 18 0.196 0.297 1.478 0.170 -0.00497 5360 86 1 46 282 7 0.757 0.172 1.370 0.134 -0.00461 5360 104 1 46 282 15 -1.680 0.150 1.000 0.144 -0.00336 5360 104 1 46 282 9 -1.370 0.115 0.885 0.149 -0.00298 5360 104 1 46 282 16 -0.801 0.185 0.802 0.140 -0.00270 5360 104 1 46 282 12 -0.270 0.288 0.900 0.197 -0.00303 5360 104 1 46 282 15 0.328 0.188 0.859 0.201 -0.00289 5360 125 1 47 281 10 -1.255 0.114 1.013 0.167 -0.00341 5360 125 1 47 281 9 -0.560 0.107 1.031 0.213 -0.00347 5360 125 1 47 281 16 0.053 0.167 1.154 0.224 -0.00388 5360 125 1 47 281 17 0.551 0.217 1.177 0.136 -0.00396 5360 125 1 47 281 10 0.951 0.145 1.156 0.134 -0.00389 5360 157 1 47 281 13 -1.472 0.165 1.026 0.115 -0.00345 5360 157 1 47 281 8 -0.936 0.122 1.062 0.180 -0.00357 5360 157 1 47 281 13 -0.398 0.196 0.901 0.270 -0.00303 5360 157 1 47 281 11 0.129 0.118 0.883 0.213 -0.00297 5360 157 1 47 281 12 0.648 0.147 0.804 0.227 -0.00270 5360 193 1 47 281 8 -1.081 0.412 1.391 0.185 -0.00468 5360 193 1 47 281 14 -0.781 0.276 1.048 0.437 -0.00352 5360 193 1 47 281 18 -0.098 0.243 1.277 0.312 -0.00430 5360 193 1 47 281 10 0.415 0.254 1.250 0.325 -0.00420 5360 193 1 47 281 8 1.060 0.224 1.698 0.163 -0.00571 5360 209 1 48 280 11 -1.115 0.333 0.442 0.284 -0.00149 5360 209 1 48 280 13 -0.510 0.177 0.448 0.284 -0.00151 5360 209 1 48 280 8 -0.070 0.347 0.698 0.168 -0.00235 5360 209 1 48 280 11 0.252 0.312 0.716 0.175 -0.00241 5360 209 1 48 280 11 0.874 0.139 0.955 0.172 -0.00321 5360 244 1 48 280 11 -1.094 0.315 1.139 0.459 -0.00383 5360 244 1 48 280 11 -0.314 0.146 0.842 0.183 -0.00283 5360 244 1 48 280 13 -0.071 0.312 1.066 0.177 -0.00358 5360 244 1 48 280 7 0.641 0.200 1.129 0.141 -0.00380 5360 244 1 48 280 15 1.104 0.147 1.235 0.230 -0.00415 5360 262 1 48 281 14 -0.701 0.261 1.303 0.284 -0.00438 5360 262 1 48 281 8 -0.084 0.114 1.325 0.174 -0.00445 5360 262 1 48 281 15 0.608 0.292 1.286 0.159 -0.00432 5360 262 1 48 281 15 0.836 0.336 1.465 0.226 -0.00493 5360 262 1 48 281 7 1.184 0.207 1.163 0.299 -0.00391 5360 298 1 48 281 16 -0.901 0.309 1.147 0.185 -0.00386 5360 298 1 48 281 14 -0.518 0.197 1.120 0.277 -0.00377 5360 298 1 48 281 15 0.003 0.253 0.958 0.234 -0.00322 5360 298 1 48 281 10 0.559 0.097 0.930 0.177 -0.00313 5360 298 1 48 281 16 1.030 0.203 0.719 0.241 -0.00242 5360 316 1 48 281 13 -1.184 0.153 0.678 0.202 -0.00228 5360 316 1 48 281 11 -0.682 0.130 0.950 0.113 -0.00319 5360 316 1 48 281 15 -0.142 0.145 0.881 0.259 -0.00296 5360 316 1 48 281 7 0.453 0.149 0.671 0.127 -0.00226 5360 316 1 48 281 13 0.710 0.176 0.553 0.148 -0.00186 5360 351 1 48 282 6 -0.806 0.197 0.807 0.223 -0.00271 5360 351 1 48 282 14 -0.243 0.320 0.781 0.188 -0.00263 5360 351 1 48 282 17 0.400 0.394 0.888 0.255 -0.00299 5360 351 1 48 282 7 0.758 0.268 0.512 0.256 -0.00172 5360 351 1 48 282 12 1.255 0.257 0.400 0.157 -0.00135 5360 367 1 48 282 9 -0.486 0.113 0.716 0.099 -0.00241 5360 367 1 48 282 17 -0.109 0.172 0.786 0.189 -0.00264 5360 367 1 48 282 21 0.454 0.189 0.811 0.160 -0.00273 5360 367 1 48 282 6 0.958 0.159 0.829 0.070 -0.00279 5360 367 1 48 282 16 1.605 0.210 0.670 0.192 -0.00225 ---=== SPECTROSCOPY DATA SUMMARY ===--- Summary Checked (y/n): yes QA Procedures Done (y/n): yes UT Exp Time flavor comment (S/N)^2 totals ========================================== b1 r1 b2 r2 ----- sequence 32910, plate -9999 ------- 00:25 32910 0.0 bias 00:31 32911 0.0 bias ----- sequence 32912, plate 1827 ------- 00:42 32912 10.0 flat 00:45 32913 2.0 arc 00:49 32914 2.1 arc 00:52 32915 2.1 arc ----- sequence 32916, plate -9999 ------- 09:23 32916 0.0 bias ----- sequence 32917, plate 0 ------- 22.5 14.7 18.0 19.1 10:00 32917 10.0 flat (meets SEGUE requirements to 10:02 32918 2.0 arc declare this plate done but 10:21 32919 900.1 target we have only 2 exposures total) 10:40 32920 900.1 target (NOTE: The last plate is actually 2181 but was recorded in SoS and image headers as "Plate 0".) ---=== TELESCOPE OFFSETS AND SCALE I ===--- Time Instrument Az Alt Rot Scale pos offset pos offset pos offset ------------------------------------------------------------------------------ 10:06Z 1 2181 246.29 0.0000 56.57 0.0000 91.05 0.0000 1.000130 ---=== TELESCOPE OFFSETS AND SCALE II ===--- ---=== DATA TAPE SUMMARY ===--- Goes: JL8574-8579, JL8591 Stays: JL8580-8585, JL8592 ---=== FOCUS LOG ===--- setmir piston Temp Wind Time Inst scale M1 M2 Foc Az Alt (C) MPH Dir filt fwhm ------------------------------------------------------------------------------ 08:18Z imager 1.00000 0 -511 -389 207 64.1 14.3 4 264 -- 0.9 09:29Z imager 1.00000 0 -231 -100 247 68.2 14.1 1 194 10:10Z 1 2181 1.00013 -1284 -70 -170 246 55.9 13.6 2 264 -- 0.98 ---=== WEATHER LOG ===--- Wind Time Temp F Dewp F MPH Direction Dust DIMM Sky 00:09Z 63 22 10 284 (WNW) 541 - Clear 00:41Z 62 23 5 307 (NW) 598 - 01:11Z 60 22 13 284 (WNW) 597 - 01:44Z 59 23 9 270 (W) 598 - 02:14Z 57 21 9 270 (W) 603 - 02:46Z 57 21 4 268 (W) 602 - 03:19Z 58 21 9 231 (SW) 634 - 03:51Z 57 20 13 209 (SSW) 555 - 04:23Z 56 18 12 217 (SW) 536 - 04:56Z 56 18 7 213 (SSW) 556 - 05:28Z 55 19 8 210 (SSW) 609 - 06:00Z 55 20 9 224 (SW) 604 - 06:32Z 55 21 4 265 (W) 678 - 07:06Z 56 20 5 267 (W) 651 - 07:37Z 57 19 4 263 (W) 683 - 08:10Z 57 20 5 267 (W) 676 - 08:42Z 57 21 5 245 (WSW) 604 - 09:14Z 57 21 3 254 (WSW) 644 - 09:45Z 56 21 4 273 (W) 615 - 10:15Z 56 22 1 259 (W) 610 - 10:47Z 55 22 1 342 (NNW) 638 - Clear 11:19Z 53 22 4 12 (NNE) 659 - ---=== TELESCOPE STATUS ===--- 02:05Z Fans and blowers on, doors cracked, louvers open 02:25Z Enclosure off 10:45Z Enclosure on, fans off, louvers closed, spectro dewars force-filled Telescope parked at 121,30 with Cart 1 (Plate 2181) mounted Counterweights at 270 Spectro autofill reconnected No interlocks bypassed Dewar weights at 11:15Z Imager: 150lbs 21psi Spectro: 84lbs 20psi ---=== SOFTWARE USED ===--- IOP/SOP: v3_149_0 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: v2_02 SoS: v10_4_7 hoggPT: v1_6_9 plate-mapper: v4_3_1 ---=== MIRROR NUMBERS ===--- PRIMARY: -------- Scale: 1.000110 MIGS TONIGHT NOMINAL Axial A -0.5150 0.5770 Axial B -0.5080 0.5880 Axial C -0.1540 0.9460 Trans D -8.1910 -8.1960 Lateral E 10.0457 10.0330 Lateral F 11.5951 11.5951 GALILS Commanded: 21350. 15150. 19900. -13300. -7600. -7650. Actual: 21343. 15127. 19911. -13303. -7585. -7634. SETMIR VALUES PriDesOrient: -1085.86 4.57 1.18 64.25 -249.76 PriOrient: -1086.26 4.56 0.88 64.15 -249.58 SECONDARY: ---------- Focus: -170.00 Air Temp.: 12.2 Alt.: 29.997473 MIGS TONIGHT NOMINAL Axial A 2.6410 1.5680 Axial B 2.1070 1.0460 Axial C 2.2190 1.1590 Trans D -0.2060 -0.2020 GALILS Commanded: 271930. 259451. 183344. -14200. -10150. Actual: 272313. 258098. 181696. -14205. -10168. SETMIR VALUES SecDesOrient: 187.91 27.97 -10.00 -90.00 257.89 SecOrient: 188.60 27.67 -9.40 -89.75 257.83 ---=== PROBLEMS IN DETAIL ===--- Spectro Focus Check ------------------- Initial "mechSend s" output sp1 Coll_motor_A 106 Coll_motor_B 305 Coll_motor_C 216 sp2 Coll_motor_A -1765 Coll_motor_B -1764 Coll_motor_C -2363 Output from goSpecFocus: sp1 red l-r = 0.031 pixels, tolerance = 0.15 pixels, focused sp2 red l-r = -0.051 pixels, tolerance = 0.15 pixels, focused sp1 blue l-r = 0.127 pixels, tolerance = 0.15 pixels, focused sp2 blue l-r = 0.036 pixels, tolerance = 0.15 pixels, focused Output from collimate: COLLIMATE: Mean offset = 0.11 pix COLLIMATE: Camera b1 appears to be IN-FOCUS (|mean| < 0.15 pix) COLLIMATE: Mean offset = 0.07 pix COLLIMATE: Camera b2 appears to be IN-FOCUS (|mean| < 0.15 pix) COLLIMATE: Mean offset = -0.02 pix COLLIMATE: Camera r1 appears to be IN-FOCUS (|mean| < 0.15 pix) COLLIMATE: Mean offset = -0.08 pix COLLIMATE: Camera r2 appears to be IN-FOCUS (|mean| < 0.15 pix) Temperatures tonight are not forecast to be significantly different from last night, so we will call everything in spec and not make changes. The temps at the time of the focus check were: tpm_TM_PMSSAvg 11.9964 tpm_TM_TelairAvg.VALA 12.66 And The Tap Drips (Drip, Drip, Drip, Drip...) --------------------------------------------- During checkout I noticed LN2 dripping from the quick disconnect fitting on the fill line between sp2 and its attendant dewar. It's not an especially large amount of liquid but the dripping is continuous during a fill. Just an observation that seemed unusual. Plate 2181 Checks Out --------------------- SoS called this "Plate 0" despite a successful loadCartridge and a correct tileId and cartridge number. The plate was also recorded as "0" in the image headers. We had to use postfix to change the header information, but the misidentification created a problem for spectro QA. We were unable to pull up spectra in IDL ("No science exposures for plate 2181"). QA up through visual inspection of science frames was done with nothing evidently awry.