APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Monday March 10, 2003 (MJD 52709) ---=== OBSERVING TEAM ===--- swing: Jurek Krzesinski night: Pete Newman Steph Snedden Support: Larry Carey (UW) Visitors: Lor Gehret & students (Latin School of Chicago) Scotsuko Nitta Kleinman, borrowing the 3.5-m ---=== OBSERVING PLAN ===--- Science! ---=== OBSERVING SUMMARY ===--- Four plates declared done, plus imaging on strip 29N in excellent seeing. Two critical-high PRs. One on counterweights, one on imager photo shutters. ---=== OBSERVING LOG ===--- Afternoon checkout: Problems with id3 - after rebooting DAs, everything went back to normal. See the problems section for details. Since then: DAs -ok, spectro guider ok, MIGs - ok. Spectrographs in foucs. ----------------------------------------------------------------------------- Night: ------- 01:51Z Cartridge 1, plate 1266. Stars on slew. Seeing was subarcsec. Smear done. Declared done with a total exposure time of 3000 s. 02:49Z We started a long bias on the telescope to see if we trigger any gang transfer problems - before we start imaging for real. After 251 frames, there were no problems, so the drift was ended. Pete tried instChange from a different SOP session than his operations session. There was still a time-out (see the problems section). Smear done. Plate declared done with a total exposure time of 2400 s. 03:34Z Cartridge 2, plate 941. Stars on slew. Smear done. Plate completed after 2400 s exposure. 04:57Z Cartridge 3, plate 1216. Stars on slew. SOP indicated a large scale change after finding the field. Instead of applying the scale change, another gotoField -gflat was issued. After that, the guide stars indicated no scale change was needed. Had a warning about bad sky residuals in SoS. Smear done. Plate declared done with a total exposure time of 2190 s. 06:09Z Cartridge 4, plate 1218. Problems finding guide stars with a regular startMon. We needed a startMon -simple. The reason was guide star 6 was too close to the edge of the display. However, we did not see this error message in SOP until "showGuiderFrame" was issued. Previously, the "star too close to the edge..." message showed up right away. The symptoms were that the guider flat displayed normally, but the next gcam of the guide stars did not display, although the exposure completed normally. Smear done. Declared this plate done with a total exposure of 2190 s. 07:15Z Cartridge 5, plate 1015. Stars on slew. Took one exposure of 720 s, and a smear. Not done. We then went down to switch to the imager. Counterweight 1 failed as we were moving to the lower limit, followed by a failure of the counterweight controller box. See the problems section. With Larry's much appreciated help, we manually moved the counterweights. 09:29Z We begin imaging. Strip 29 N, Run 3716: startLambda -6. Focus loop converged at frame 18. 09:35Z Start of ramp, lambda=-3, frame 22. 09:43Z Start of science, lambda=-1, frame 35. 11:51Z End of science, lambda= 11:59Z End of drift, lambda= , frame 263. 12:01Z Donuts for Jim, run 3717 ...SHUTTERS DID NOT OPEN! We ended the drift and issued a regular goDrift 12:08Z Second attempt at donuts, run 3718. Shutters still closed. We start troubleshooting. See problem section. Run 3719, shutters open after a minute or two. Twilight. No donuts, Jim. Sorry. Run 3720 Bias on imager. ---=== IMAGING RUN SUMMARY ===--- Run Time Stripe Lambda Last Flavor Comments Start End Begin End Frame ------------------------------------------------------------------------- 3714 00:16Z 00:45Z 100 O -118.46 -111.30 62 ignore 3715 03:12Z 05:38Z 100 O -74.31 -37.65 259 ignore 3716 09:26Z 12:01Z 29 N -5.17 33.80 274 science 3717 12:04Z 12:07Z 29 N 34.37 35.18 18 engineering 3718 12:09Z 12:13Z 29 N 35.68 36.74 20 engineering 3719 12:15Z 12:25Z 29 N 37.24 -51.23 30 engineering 3720 12:36Z 13:00Z 100 O 66.97 73.13 50 bias on telescope ---=== IMAGING RUN DETAILS ===--- See the main log section. ---=== SKIPPY RESULTS ===--- Run Frame nFrames stars muErr muRms nuErr nuRms rot az el --------------------------------------------------------------------------- 3716 13 4 35 -3.000 0.100 7.000 0.124 -0.00491 314 65 3716 17 4 40 -3.100 0.440 7.100 0.403 -0.00484 314 65 3716 70 4 23 -4.700 0.063 7.700 0.137 -0.00493 317 68 3716 123 4 40 -4.400 0.067 7.300 0.082 -0.00440 318 70 3716 175 4 42 -5.500 0.091 6.000 0.101 -0.00303 316 73 3716 228 4 46 -5.700 0.487 4.000 0.253 0.00027 309 76 3718 9 4 55 -6.300 0.085 1.100 0.152 0.00611 294 78 ---=== LTMATCH RESULTS ===--- Run Field nFields alt az nGood rowMean rowSig colMean colSig rot ------------------------------------------------------------------------ 3716 27 1 66 225 13 1.380 0.080 2.520 0.127 -0.00847 3716 27 1 66 225 13 1.336 0.064 2.745 0.209 -0.00923 3716 27 1 66 225 12 1.533 0.095 2.724 0.197 -0.00916 3716 27 1 66 225 12 1.470 0.149 2.578 0.209 -0.00867 3716 27 1 66 225 19 1.522 0.094 2.525 0.113 -0.00849 3716 46 1 67 224 11 0.842 0.171 1.838 0.318 -0.00618 3716 46 1 67 224 11 0.826 0.186 1.886 0.282 -0.00634 3716 46 1 67 224 7 0.956 0.159 2.153 0.306 -0.00724 3716 46 1 67 224 9 0.973 0.183 1.861 0.334 -0.00626 3716 46 1 67 224 13 0.989 0.195 2.009 0.251 -0.00676 3716 80 1 68 222 13 0.328 0.111 1.401 0.172 -0.00471 3716 80 1 68 222 12 0.304 0.105 1.436 0.141 -0.00483 3716 80 1 68 222 5 0.417 0.118 1.582 0.129 -0.00532 3716 80 1 68 222 12 0.361 0.123 1.742 0.188 -0.00586 3716 80 1 68 222 11 0.467 0.125 1.762 0.146 -0.00592 3716 97 1 69 222 15 0.618 0.129 1.374 0.163 -0.00462 3716 97 1 69 222 15 0.547 0.116 1.522 0.112 -0.00512 3716 97 1 69 222 7 0.719 0.064 1.554 0.183 -0.00523 3716 97 1 69 222 9 0.774 0.066 1.444 0.100 -0.00486 3716 97 1 69 222 19 0.835 0.113 1.571 0.167 -0.00528 3716 132 1 71 222 22 0.663 0.112 0.277 0.148 -0.00093 3716 132 1 71 222 17 0.646 0.130 0.450 0.115 -0.00151 3716 132 1 71 222 18 0.703 0.083 0.435 0.139 -0.00146 3716 132 1 71 222 14 0.670 0.109 0.420 0.155 -0.00141 3716 132 1 71 222 19 0.725 0.096 0.418 0.130 -0.00141 3716 150 1 72 222 7 1.040 0.131 0.477 0.071 -0.00160 3716 150 1 72 222 16 0.923 0.122 0.537 0.134 -0.00180 3716 150 1 72 222 16 1.006 0.148 0.516 0.109 -0.00173 3716 150 1 72 222 19 1.099 0.195 0.533 0.104 -0.00179 3716 150 1 72 222 14 0.972 0.142 0.572 0.092 -0.00192 3716 185 1 74 225 14 0.560 0.147 -0.866 0.108 0.00291 3716 185 1 74 225 13 0.512 0.075 -0.658 0.150 0.00221 3716 185 1 74 225 17 0.637 0.087 -0.688 0.076 0.00231 3716 185 1 74 225 14 0.613 0.069 -0.770 0.103 0.00259 3716 185 1 74 225 12 0.620 0.075 -0.632 0.106 0.00212 3716 204 1 75 228 14 0.122 0.105 -0.506 0.062 0.00170 3716 204 1 75 228 10 0.131 0.070 -0.340 0.061 0.00114 3716 204 1 75 228 20 0.233 0.048 -0.337 0.146 0.00113 3716 204 1 75 228 13 0.208 0.073 -0.308 0.090 0.00104 3716 204 1 75 228 12 0.178 0.063 -0.296 0.087 0.00099 3716 238 1 77 234 23 0.533 0.135 -1.722 0.184 0.00579 3716 238 1 77 234 15 0.469 0.084 -1.768 0.083 0.00594 3716 238 1 77 234 12 0.496 0.097 -1.653 0.164 0.00556 3716 238 1 77 234 17 0.405 0.100 -1.680 0.142 0.00565 3716 238 1 77 234 16 0.459 0.102 -1.805 0.189 0.00607 3716 255 1 78 239 20 0.622 0.197 -3.060 0.138 0.01029 3716 255 1 78 239 14 0.578 0.156 -2.954 0.099 0.00993 3716 255 1 78 239 10 0.601 0.178 -2.931 0.109 0.00985 3716 255 1 78 239 13 0.708 0.139 -3.066 0.089 0.01031 3716 255 1 78 239 14 0.679 0.093 -3.103 0.091 0.01043 ---=== 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 00:20 19830 10.0 flat 00:23 19831 2.0 arc 00:26 19832 2.1 arc 00:28 19833 2.1 arc ----- sequence 19834, plate -9999 ------- 01:23 19834 0.0 bias ----- sequence 19835, plate 1266 ------- 01:56 19835 10.0 flat 01:59 19836 2.0 arc 02:24 19837 900.1 target 02:48 19838 900.1 target 03:11 19839 1200.1 target 03:19 19840 240.0 smear 03:22 19841 10.0 flat 03:24 19842 2.0 arc ----- sequence 19843, plate 941 ------- 03:44 19843 10.0 flat 03:46 19844 2.0 arc 04:05 19845 900.1 target 04:21 19846 750.1 target 04:36 19847 750.1 target 04:43 19848 240.0 smear ----- sequence 19849, plate 1216 ------- 04:58 19849 10.0 flat 05:01 19850 2.0 arc 05:18 19851 730.1 target 05:33 19852 730.1 target 05:49 19853 730.1 target 05:57 19854 240.0 smear ----- sequence 19855, plate 1218 ------- 06:18 19855 10.0 flat 06:21 19856 2.0 arc 06:37 19857 730.1 target 06:52 19858 730.1 target 07:08 19859 730.1 target 07:16 19860 240.0 smear ----- sequence 19861, plate 1015 ------- 07:27 19861 10.0 flat 07:29 19862 2.0 arc 07:44 19863 720.1 target 07:52 19864 240.0 smear ---=== TELESCOPE OFFSETS AND SCALE I ===--- Time Instrument Az Alt Rot Scale pos offset pos offset pos offset ------------------------------------------------------------------------------ 02:17Z 1 1266 81.43 0.0023 65.29 0.0003 247.72 0.0064 1.000000 03:49Z 2 941 124.53 0.0017 66.29 0.0008 -72.49 -0.0042 1.000060 05:04Z 3 1216 141.01 -0.0072 79.45 0.0011 -44.22 0.0046 1.000210 06:27Z 4 1218 204.03 -0.0004 78.85 0.0032 27.76 -0.0129 1.000180 07:32Z 5 1015 182.75 -0.0017 68.26 0.0025 3.95 -0.0160 1.000070 ---=== TELESCOPE OFFSETS AND SCALE II ===--- ---=== DATA TAPE SUMMARY ===--- Goes: JL6068-6073, 6074 Stays: JL6075-6080, 6081 ---=== FOCUS LOG ===--- setmir piston Temp Wind Time Inst scale M1 M2 Foc Az Alt (C) MPH Dir filt fwhm ------------------------------------------------------------------------------ 01:55Z 1 1266 1.00009 -888 279 -137 85 60.7 6.9 7 265 - 1.2 03:42Z 2 941 1.00006 -591 460 -190 124 65.0 5.6 10 233 - 1.3 05:04Z 3 1216 1.00021 -2073 -808 -210 141 79.4 6.2 8 224 - 1.5 06:16Z 4 1218 1.00018 -1776 -598 -245 195 79.6 5.9 7 257 - 1.4 07:32Z 5 1015 1.00007 -690 317 -245 183 68.3 6.2 8 246 - 1.3 10:02Z imager 1.00000 0 -623 -494 223 67.4 6.0 9 259 23 1.1 10:38Z imager 1.00000 0 -616 -482 222 70.5 5.8 8 259 23 0.95 ---=== WEATHER LOG ===--- Wind Time Temp F Dewp F MPH Direction Dust DIMM Sky 00:04Z 49 7 8 295 (WNW) 141 - clear 00:36Z 47 6 10 263 (W) 164 - " 01:09Z 44 7 7 265 (W) 222 - " 01:39Z 43 5 6 261 (W) 213 - " 02:09Z 44 6 7 266 (W) 212 - " 02:42Z 44 6 6 265 (W) 222 - " 03:14Z 41 7 6 254 (WSW) 255 - " 03:46Z 41 8 8 245 (WSW) 227 - " 04:17Z 41 6 8 217 (SW) 210 - " 04:48Z 43 6 7 217 (SW) 314 - " 05:19Z 42 5 6 259 (W) 300 - " 05:50Z 43 6 7 237 (WSW) 344 - " 06:22Z 42 5 7 265 (W) 257 - " 06:53Z 43 5 8 254 (WSW) 253 - " 07:24Z 43 5 8 236 (SW) 249 - " 07:56Z 43 5 8 235 (SW) 269 - " 08:28Z 42 6 7 243 (WSW) 254 - " 09:01Z 42 5 6 252 (WSW) 215 - " 09:33Z 43 3 11 245 (WSW) 162 - " 10:05Z 43 4 7 249 (WSW) 168 - " 10:37Z 42 4 7 264 (W) 166 - " 11:10Z 42 3 8 264 (W) 168 - " 11:42Z 42 3 10 269 (W) 195 - " 12:14Z 42 4 7 265 (W) 186 - " 12:47Z 42 5 9 270 (W) 161 - " 13:20Z 40 5 4 257 (WSW) 169 - " ---=== TELESCOPE STATUS ===--- 01:50Z Thermo King off. Blowers & cone fans on, louvers open. 01:05Z Building opened 12:45Z Enclosure closed. Blowers & cone fans off. Telescope at 30 deg alt with imager mounted and spectro autofill connected. Counterweights at 710 13:19Z Spectro dewar weight: 108 13:20Z Imager dewar weight: 180 ---=== SOFTWARE USED ===--- IOP/SOP: v3_109_4 Watcher: v2_21_0 MCP: v5_18_0 TPM: tpm_v2_27_0 AstroDa: v14_47 TCC: TCC 2.6.8 November 13 2002 sdssProcedures: v1_64 SoS: v4_9_13 hoggPT: v1_6_6 plate-mapper: v4_2_0 ---=== MIRROR NUMBERS ===--- PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A 0.0930 0.0790 Axial B 0.7960 0.7970 Axial C 0.8220 0.8240 Trans D -9.0760 -9.1130 Lateral E 1.8820 1.8870 Lateral F 0.0000 1.4300 GALILS Commanded: 5400. -3700. 900. -200. 31550. 30650. Actual: 5400. -3700. 900. -200. 31550. 30650. SETMIR VALUES PriDesOrient: 0.00 -11.80 23.00 1256.90 642.10 PriOrient: 0.00 -12.16 22.81 1257.41 642.19 SECONDARY: ---------- Focus: 0.00 Air Temp.: 9.9 Alt.: 30.009571 MIGS TONIGHT NOMINAL Axial A 1.5170 1.5170 Axial B 1.1570 1.1560 Axial C 1.1000 1.0990 Trans D -0.7010 -0.7070 GALILS Commanded: 1619712. 1555114. 1576487. -3400. -7900. Actual: 1619650. 1555250. 1576350. -3400. -7900. SETMIR VALUES SecDesOrient: 1257.00 0.00 -20.00 0.00 130.98 SecOrient: 1257.02 -0.08 -20.06 -0.51 130.94 ---=== PROBLEMS IN DETAIL ===--- Afternoon checkout DA problems: ------------------------------- During the afternoon checkout imager bias, the following watcher errors occurred. After issuing an endDrift for run 3714, the following id2 and id3 errors showed up: (note that the previous run 3713 was the one on which problems with id2 and id3 occured and when we decided to reset crates, so everything below happened after resetting crates): id2's archiver and tape drives dsc E archStsFail Failed to receive exabyte command completion status (dsc_E_archStsFail Failed to receive exabyte command completion status : 2003-03-11 00:44:58Z ) dsc E archWrFail Tape write error while archiving frame 3713 9.42 (dsc_E_archWrFail Tape write error while archiving frame 3713 9.42 : 2003-03-11 00:44:58Z ) dsc E archShutDown1 Archiver shutting down first drive (dsc_E_archShutDown1 Archiver shutting down first drive : 2003-03-11 00:44:58Z) dsc E trcErr dscArch CheckPrevOp: rstatus = 0x8001421c, drive 1 (dsc_E_trcErr dscArch_CheckPrevOp: rstatus = 0x8001421c, drive 1 : 2003-03-11 00:44:58Z ) dsc E trcErr dscArch CheckPrevOp: rstatus = 0x8001421c, drive 2 (dsc_E_trcErr dscArch_CheckPrevOp: rstatus = 0x8001421c, drive 2 : 2003-03-11 00:44:58Z ) dsc E archShutDown2 Archiver shutting down second drive (dsc_E_archShutDown2 Archiver shutting down second drive : 2003-03-11 00:44:58Z) id3's archiver and tape drives dsc E archShutDown1 Archiver shutting down first drive (dsc_E_archShutDown1 Archiver shutting down first drive : 2003-03-11 00:44:58Z) dsc E archWrFail Tape write error while archiving frame 3713 9.43 (dsc_E_archWrFail Tape write error while archiving dsc E archShutDown2 Archiver shutting down second drive (dsc_E_archShutDown2 Archiver shutting down second drive : 2003-03-11 00:44:58Z) dsc E archStsFail Failed to receive exabyte command completion status (dsc_E_archStsFail Failed to receive exabyte command completion status : 2003-03-11 00:44:58Z ) dsc E trcErr dscArch CheckPrevOp: rstatus = 0x8001421c, drive 1 (dsc_E_trcErr dscArch_CheckPrevOp: rstatus = 0x8001421c, drive 1 : 2003-03-11 00:44:58Z ) dsc E trcErr dscArch CheckPrevOp: rstatus = 0x8001421c, drive 2 (dsc_E_trcErr dscArch_CheckPrevOp: rstatus = 0x8001421c, drive 2 : 2003-03-11 00:44:58Z ) Watcher Errors: --------------- MCP azimuth (correction for azimuth 198240 is too large (2003-03-11 01:36:29Z sdssmcp): 2003-03-11 01:36:51Z TPM dewar (MAJOR: 2003-03-11 01:35:16Z) tracking (MAJOR: 2003-03-11 01:24:05Z) m2 temp (MAJOR: 2003-03-11 02:19:25Z) dewar (MAJOR: 2003-03-11 05:24:57Z) tracking (MINOR: 2003-03-11 05:58:30Z) m2 temp (MAJOR: 2003-03-11 05:06:44Z) m2 temp (MAJOR: 2003-03-11 06:54:57Z) SOP instChange: --------------- sp1> instChange I think that we haven't started slewing To kill this message, type 'schedule watchTCCSlew {} 0' I think we got there before I knew we started I don't think the slew ever started (after 30s) sp1> Is that last message from watchTCCSlew or tccPutAndWait? The slew finished about when the "got there before we started" message, then the last message came about 30 seconds later. The slew itself was quite normal. Issued at the command line in a +different+ SOP session to that from which I run SOPGUI Counterweight Failure: ---------------------- Counterweight 1 stopped while moving down from 280. We tried moving it a few more times, remotely and at the control box. It would move about an inch, then stop, and then we were unable to get it to move at all. At the control box, in manual mode, we could hear what sounded like relays clicking, but there was no counterweight motion. We then tried moving other counterweights (which had moved before counterweight 1 failed) and they would no longer move. We are afraid something has failed in the control box. We tried replacing the external fuse, even though it looked okay, but it made no difference. We also smelled an odor of something overheating in the lower enclosure that is probably related, although we couldn't verify that it came from the control box. At this point, we called Jon B. Of the different options discussed, we opted to manually move the counterweights. We dragged Larry from bed so he could supervise. We used both an electric drill and a manual crank to move them to 22.5 inches from the bottom of the window to the bottom of the counterweight. This is equivalent to a counterweight setting of 710, near the upper limit, and a good enough balance for the imager. The details of how to use the electric drill to move the counterweight have been folklored (telescope/enclosure section). Imager Shutters: ---------------- The photo shutters failed to open when we started the donuts drift (run 3717. The astrometric shutters behaved themselves. im> cc imstat PHOTOMETRIC_TOP_SHUTTERS NOT_OPEN # !!!_FAULT_!!! PHOTOMETRIC_BOTTOM_SHUTTERS NOT_OPEN # !!!_FAULT_!!! ASTROMETRIC_TOP_SHUTTERS OPEN ASTROMETRIC_BOTTOM_SHUTTERS OPEN TBARS UNLATCHED "cc close all" cleared the fault. The third time we issued a "cc open all" the shutters opened AFTER one or two minutes, the shutter status was OPEN and we saw stars. The shutter pressure gauge in the lower enclosure was normal at 80 psi, but we did hear a hiss from the imager. We are not sure if that was the normal purge line hiss, or the sound of a leak. A PR was filed. Spectro focus check (ambient temperature 6.5 C): ------------------------------------------------- sp1> Coll_motor_A 3788 Coll_motor_B 3787 Coll_motor_C 2585 sp2> Coll_motor_A 3519 Coll_motor_B 3524 Coll_motor_C 3516 IDL> collimate, 19832 % Compiled module: COLLIMATE. Reading /data/spectro/52709/sdR-b1-00019832.fit Reading /data/spectro/52709/sdR-b1-00019833.fit COLLIMATE: Min offset = -0.57 pix COLLIMATE: Max offset = 0.76 pix COLLIMATE: RMS across CCD = 0.30 pix COLLIMATE: Mean offset = 0.10 pix COLLIMATE: Camera b1 appears to be IN-FOCUS (|mean| < 0.15 pix) COLLIMATE: Predict blue camera ring movement of -3.6 degrees for spectro-1 COLLIMATE: (if red is already in focus) Log file = Collimate-52709-b1-00019832.log PostScript file = Collimate-52709-b1-00019832.ps Reading /data/spectro/52709/sdR-b2-00019832.fit Reading /data/spectro/52709/sdR-b2-00019833.fit COLLIMATE: Min offset = -0.18 pix COLLIMATE: Max offset = 0.49 pix COLLIMATE: RMS across CCD = 0.17 pix COLLIMATE: Mean offset = 0.17 pix COLLIMATE: Camera b2 appears to be OUT-OF-FOCUS (|mean| > 0.15 pix) COLLIMATE: Predict blue camera ring movement of -5.9 degrees for spectro-2 COLLIMATE: (if red is already in focus) Log file = Collimate-52709-b2-00019832.log PostScript file = Collimate-52709-b2-00019832.ps Reading /data/spectro/52709/sdR-r1-00019832.fit Reading /data/spectro/52709/sdR-r1-00019833.fit COLLIMATE: Min offset = -0.70 pix COLLIMATE: Max offset = 0.36 pix COLLIMATE: RMS across CCD = 0.29 pix COLLIMATE: Mean offset = -0.21 pix COLLIMATE: Camera r1 appears to be OUT-OF-FOCUS (|mean| > 0.15 pix) COLLIMATE: Predict (red) piston movement of 1925 steps for spectro-1 COLLIMATE: Issue SOP command: "sp1; mechPiston 1925" Log file = Collimate-52709-r1-00019832.log PostScript file = Collimate-52709-r1-00019832.ps Reading /data/spectro/52709/sdR-r2-00019832.fit Reading /data/spectro/52709/sdR-r2-00019833.fit COLLIMATE: Min offset = -0.77 pix COLLIMATE: Max offset = 0.02 pix COLLIMATE: RMS across CCD = 0.20 pix COLLIMATE: Mean offset = -0.20 pix COLLIMATE: Camera r2 appears to be OUT-OF-FOCUS (|mean| > 0.15 pix) COLLIMATE: Predict (red) piston movement of 1843 steps for spectro-2 COLLIMATE: Issue SOP command: "sp2; mechPiston 1843" Log file = Collimate-52709-r2-00019832.log PostScript file = Collimate-52709-r2-00019832.ps IDL> I called it in focus, for that early evening. No pistoning has been applied.