Subject: 2.5m obslog 20110922 (MJD 55827) From: elenam@apo.nmsu.edu Date: Fri, 23 Sep 2011 12:20:55 +0000 (UTC) APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Thursday September 22, 2011 (MJD 55827) ---- Observing Team ---- Dmitry Bizyaev Olena Malanushenko ---- Observing Plan ---- 22 Sep 2011 55827.0 0.32 02:22 11:30 19:26 04:34 BOSS 9.1 hours ---- Observing Summary ---- In despite of bad weather forecast we had clear sky with moderate seeing 1.2-1.8". We observed 8 plates, 5 of them were DONE: ct=11, pl=4984 ct=16, pl=5022 ct=17, pl=4369 ct=18, pl=4299 ct=15, pl=3647 and 3 of them need more observations: ct=13, pl=4377 ct=12, pl=4362 ct=10, pl=4395 We did not use automatic loop for scale change as it makes jumps of axis. See Dmitry results in problem section. Axises did not jump if scale correction was off. Used the same offset -0.05,+0.02 (-18", +7") to find guider stars for all plates. One louvers cover needs to be fixed. ---- Observing Log ---- Afternoon --------- Telescope was checked and all systems were working properly. 00:07:34 loadCart: ct=15, pl=3647, sd=A; Got boss bias, dark, and hartmann. Adjusted boss spectro collimation to focus. 00:40Z started ventilation Night ------- 01:14:40 encl25m : open; 00:50:07 loadCart: ct=11, pl=4984, sd=A; Used offset -0.05,+0.02 (-18", +7") to find guider stars. 01:47:53 hartSp1: r=-48, b=-0.2, txt=OK, sp1Temp = 13.3 ; 01:47:53 sos.sp1AverageMove = 6465 01:48:09 hartSp2: r=415, b=1.4, txt=OK, sp2Temp = 12.6 ; 01:48:09 sos.sp2AverageMove = 2978 Science 3X 900 sec Guider scale correction was off. s/n = 11.8 26.6 10.5 23.2 DONE 03:00:51 loadCart: ct=16, pl=5022, sd=A; Used offset -0.05,+0.02 (-18", +7") to find guider stars. 03:05:17 hartSp1: r=556, b=1.9, txt=OK, sp1Temp = 12.3 ; 03:05:17 sos.sp1AverageMove = -6307 03:05:33 hartSp2: r=-989, b=-3.4, txt=OK, sp2Temp = 11.9 ; 03:05:33 sos.sp2AverageMove = -7144 Science 5X 900 sec Guider scale correction was off s/n = 13.9 35.6 10.7 28.6 DONE 04:26:46 loadCart: ct=13, pl=4377, sd=A; Used offset -0.05,+0.02 (-18", +7") to find guider stars. 04:30:48 hartSp2: r=-280, b=-1.0, txt=OK, sp2Temp = 11.3 ; 04:30:48 sos.sp2AverageMove = 1753 04:30:54 hartSp1: r=982, b=3.4, txt=OK, sp1Temp = 12.0 ; 04:30:54 sos.sp1AverageMove = 2552 Guider scale correction was off. s/n = 7.1 21.2 6.3 19.0 To CONTINUE 05:45:01 loadCart: ct=12, pl=4362, sd=A; Used offset -0.05,+0.02 (-18", +7") to find guider stars. 05:49:51 hartSp1: r=747, b=2.6, txt=OK, sp1Temp = 11.6 ; 05:49:51 sos.sp1AverageMove = -2335 05:49:58 hartSp2: r=-372, b=-1.3, txt=OK, sp2Temp = 11.0 ; 05:49:58 sos.sp2AverageMove = -715 Science X3 900 sec exposure s/n = 7.9 17.2 6.8 16.5 To CONTINUE 06:48:21 loadCart: ct=17, pl=4369, sd=A; Used offset -0.05,+0.02 (-18", +7") to find guider stars. 06:52:21 hartSp1: r=835, b=2.9, txt=OK, sp1Temp = 10.8 ; 06:52:21 sos.sp1AverageMove = -502 06:52:25 hartSp2: r=-560, b=-1.9, txt=OK, sp2Temp = 10.1 ; 06:52:25 sos.sp2AverageMove = -1168 Science 3X 900 sec s/n 13.6 29.6 12.8 26.5 DONE 7:51:20 loadCart: ct=18, pl=4299, sd=A; Used offset -0.05,+0.02 (-18", +7") to find guider stars. 07:55:12 hartSp1: r=820, b=2.8, txt=OK, sp1Temp = 10.6 ; 07:55:12 sos.sp1AverageMove = -808 07:55:15 hartSp2: r=-184, b=-0.6, txt=OK, sp2Temp = 10.0 ; 07:55:15 sos.sp2AverageMove = -263 Guider scale correction was off. Science X5 900 sec s/n= 11.2 26.4 11.9 23.0, exp=3603.2 DONE 09:14:40 loadCart: ct=10, pl=4395, sd=A; guess offset 09:18:32 hartSp2: r=-484, b=-1.7, txt=OK, sp2Temp = 10.1 ; 09:18:32 sos.sp2AverageMove = -1884 09:18:32 hartSp2: r=-484, b=-1.7, txt=OK, sp2Temp = 10.1 ; 09:18:32 sos.sp2AverageMove = -1884 Science X4 900 sec s/n= 8.6 28.6 10.4 28.9, time=4504.0 To CONTINUE 10:33:19 loadCart: ct=15, pl=3647, sd=A; guess offset 10:36:58 hartSp2: r=191, b=0.7, txt=OK, sp2Temp = 9.7 ; 10:36:58 sos.sp2AverageMove = 640 10:37:01 hartSp1: r=1083, b=3.7, txt=OK, sp1Temp = 10.2 ; 10:37:01 sos.sp1AverageMove = 1490 Science X4 900 sec s/n= 12.9 43.0 11.2 35.1, time= 6305.6 Twilight 11:54:36 encl25m : closed; ---- Telescope Offsets and Scale ---- --- Offsets --- (arcsec) Time Inst Az Alt Rot objArcOff guideRot calibOff -------------------------------------------------------------------------------- 02:05 11-4984A -114.1 65.7 83.2 (-17.1, 0.7) ( -37.9) ( 0.0, 0.0, 0.0) a 02:22 11-4984A -113.5 62.6 86.4 (-16.7, 1.1) ( -33.4) ( 0.0, 0.0, 0.0) a 02:38 11-4984A -113.2 59.4 89.2 (-17.1, 2.6) ( -30.4) ( 0.0, 0.0, 0.0) a 03:11 16-5022A 67.0 63.9 235.4 (-24.5, 6.6) ( 24.2) ( 0.0, 0.0, 0.0) a 03:27 16-5022A 61.5 67.0 231.8 (-23.8, 8.3) ( 32.3) ( 0.0, 0.0, 0.0) a 03:43 16-5022A 54.7 69.9 226.8 (-22.4, 9.8) ( 41.5) ( 0.0, 0.0, 0.0) a 04:00 16-5022A 45.7 72.6 219.8 (-21.4, 11.0) ( 56.6) ( 0.0, 0.0, 0.0) a 04:17 16-5022A 34.2 74.9 210.1 (-20.0, 11.9) ( 77.7) ( 0.0, 0.0, 0.0) a 04:34 13-4377A 13.0 54.2 190.8 (-20.2, 8.9) ( 86.3) ( 0.0, 0.0, 0.0) a 04:51 13-4377A 6.0 54.8 185.0 (-19.3, 9.6) ( 85.5) ( 0.0, 0.0, 0.0) a 05:07 13-4377A -1.2 54.9 179.0 (-18.9, 9.7) ( 83.6) ( 0.0, 0.0, 0.0) a 05:24 13-4377A -8.3 54.7 173.0 (-18.2, 9.2) ( 79.3) ( 0.0, 0.0, 0.0) a 05:54 12-4362A 1.0 55.0 180.8 (-17.5, 9.5) ( 63.2) ( 0.0, 0.0, 0.0) a 06:10 12-4362A -6.1 54.8 174.9 (-16.0, 9.8) ( 59.7) ( 0.0, 0.0, 0.0) a 06:27 12-4362A -13.1 54.3 169.0 (-15.1, 9.4) ( 55.2) ( 0.0, 0.0, 0.0) a 06:57 17-4369A 17.0 53.8 194.2 (-24.8, 10.5) ( 112.3) ( 0.0, 0.0, 0.0) a 07:13 17-4369A 10.1 54.6 188.5 (-23.6, 11.1) ( 112.8) ( 0.0, 0.0, 0.0) a 07:30 17-4369A 3.0 55.0 182.6 (-22.8, 11.1) ( 112.6) ( 0.0, 0.0, 0.0) a 07:59 18-4299A -22.3 59.3 161.3 (-20.6, 8.8) ( 105.3) ( 0.0, 0.0, 0.0) a 08:16 18-4299A -29.6 57.8 155.4 (-19.2, 8.7) ( 97.4) ( 0.0, 0.0, 0.0) a 08:32 18-4299A -36.3 55.9 150.1 (-18.4, 8.2) ( 89.4) ( 0.0, 0.0, 0.0) a 08:48 18-4299A -42.3 53.7 145.5 (-17.8, 9.2) ( 80.9) ( 0.0, 0.0, 0.0) a 09:05 18-4299A -47.7 51.2 141.4 (-17.1, 9.4) ( 73.3) ( 0.0, 0.0, 0.0) a 09:22 10-4395A -2.8 48.8 177.7 (-23.4, 8.6) ( 90.1) ( 0.0, 0.0, 0.0) a 09:38 10-4395A -8.9 48.5 172.5 (-22.7, 8.9) ( 85.8) ( 0.0, 0.0, 0.0) a 09:54 10-4395A -14.9 47.7 167.4 (-22.1, 9.5) ( 80.5) ( 0.0, 0.0, 0.0) a 10:11 10-4395A -20.6 46.7 162.6 (-20.9, 10.3) ( 74.2) ( 0.0, 0.0, 0.0) a 10:42 15-3647A -33.4 52.5 152.4 (-24.4, 9.8) ( 18.3) ( 0.0, 0.0, 0.0) a 10:59 15-3647A -39.1 50.4 148.0 (-23.8, 11.4) ( 10.9) ( 0.0, 0.0, 0.0) a 11:15 15-3647A -44.4 48.1 144.0 (-23.3, 11.4) ( 4.8) ( 0.0, 0.0, 0.0) a 11:31 15-3647A -49.1 45.6 140.6 (-22.2, 12.0) ( -3.9) ( 0.0, 0.0, 0.0) a ---- Focus Log ---- -- Focus --- Time Inst Scale M1 M2 Focus Az Alt Temp Wind Dir -------------------------------------------------------------------------------- 02:05 11-4984A 1.000324 -3198 -1081 427 -114.1 65.7 12.3 11 289 1.4 a 02:22 11-4984A 1.000324 -3198 -1078 423 -113.5 62.6 12.3 8 291 1.4 a 02:38 11-4984A 1.000312 -3080 -1001 394 -113.2 59.4 12.2 10 318 1.4 a 03:11 16-5022A 1.000290 -2863 -847 380 67.0 63.9 11.0 7 355 1.6 a 03:27 16-5022A 1.000271 -2675 -706 371 61.5 67.0 11.7 0 207 1.4 a 03:43 16-5022A 1.000261 -2577 -637 364 54.7 69.9 11.8 4 342 1.3 a 04:00 16-5022A 1.000246 -2427 -534 348 45.7 72.6 12.0 2 336 1.2 a 04:17 16-5022A 1.000231 -2280 -425 338 34.2 74.9 12.1 3 320 1.1 a 04:34 13-4377A 1.000249 -2459 -562 304 13.0 54.2 12.2 2 264 1.3 a 04:51 13-4377A 1.000242 -2389 -508 303 6.0 54.8 12.0 1 241 1.2 a 05:07 13-4377A 1.000235 -2319 -455 299 -1.2 54.9 12.0 2 273 1.3 a 05:24 13-4377A 1.000240 -2370 -502 292 -8.3 54.7 11.8 1 232 1.1 a 05:54 12-4362A 1.000240 -2370 -477 318 1.0 55.0 10.5 5 64 1.4 a 06:10 12-4362A 1.000240 -2370 -452 342 -6.1 54.8 10.5 8 54 1.5 a 06:27 12-4362A 1.000245 -2417 -450 384 -13.1 54.3 9.9 8 66 1.8 a 06:57 17-4369A 1.000284 -2803 -799 352 17.0 53.8 11.5 1 264 1.4 a 07:13 17-4369A 1.000269 -2656 -718 313 10.1 54.6 11.3 2 246 1.5 a 07:30 17-4369A 1.000269 -2656 -733 299 3.0 55.0 11.0 4 256 1.6 a 07:59 18-4299A 1.000239 -2360 -505 294 -22.3 59.3 10.8 2 240 1.5 a 08:16 18-4299A 1.000219 -2162 -331 300 -29.6 57.8 10.6 1 220 1.5 a 08:32 18-4299A 1.000219 -2162 -326 300 -36.3 55.9 10.7 2 202 1.6 a 08:48 18-4299A 1.000224 -2210 -376 284 -42.3 53.7 10.8 1 208 1.7 a 09:05 18-4299A 1.000231 -2280 -418 292 -47.7 51.2 10.9 1 212 1.6 a 09:22 10-4395A 1.000231 -2280 -404 299 -2.8 48.8 11.1 1 221 1.8 a 09:38 10-4395A 1.000236 -2328 -431 312 -8.9 48.5 10.3 4 246 2.0 a 09:54 10-4395A 1.000251 -2478 -548 315 -14.9 47.7 10.0 2 252 1.9 a 10:11 10-4395A 1.000251 -2478 -536 323 -20.6 46.7 10.2 2 257 1.8 a 10:42 15-3647A 1.000226 -2230 -311 363 -33.4 52.5 10.1 3 261 1.9 a 10:59 15-3647A 1.000236 -2328 -388 360 -39.1 50.4 10.3 5 280 1.5 a 11:15 15-3647A 1.000246 -2427 -455 368 -44.4 48.1 10.6 3 305 1.5 a 11:31 15-3647A 1.000246 -2427 -459 355 -49.1 45.6 10.6 6 352 1.4 a ---- Weather Log ---- --- Weather --- Time Inst Temp DP Dif Humid Wind Dir Dust,1um IRSC IRSCm -------------------------------------------------------------------------------- 02:05 11-4984A 12.3 2.8 9.5 52 11 289 808 6.6 1439.0 1.4 a 02:22 11-4984A 12.3 2.6 9.7 51 8 291 851 7.2 1452.0 1.4 a 02:38 11-4984A 12.2 2.7 9.5 52 10 318 847 9.3 1474.0 1.4 a 03:11 16-5022A 11.0 2.2 8.8 54 7 355 794 6.3 1475.0 1.6 a 03:27 16-5022A 11.7 1.3 10.4 48 0 207 709 5.7 1470.0 1.4 a 03:43 16-5022A 11.8 1.1 10.7 48 4 342 788 5.8 1497.0 1.3 a 04:00 16-5022A 12.0 1.4 10.6 48 2 336 785 5.3 1483.0 1.2 a 04:17 16-5022A 12.1 1.4 10.7 47 3 320 802 5.2 1480.0 1.1 a 04:34 13-4377A 12.2 1.4 10.8 47 2 264 763 5.1 1469.0 1.3 a 04:51 13-4377A 12.0 1.7 10.3 49 1 241 761 5.4 1496.0 1.2 a 05:07 13-4377A 12.0 1.5 10.5 48 2 273 834 5.2 1489.0 1.3 a 05:24 13-4377A 11.8 1.7 10.1 49 1 232 756 5.8 1488.0 1.1 a 05:54 12-4362A 10.5 1.4 9.1 53 5 64 750 6.0 1496.0 1.4 a 06:10 12-4362A 10.5 1.4 9.1 53 8 54 712 5.3 1518.0 1.5 a 06:27 12-4362A 9.9 1.9 8.0 57 8 66 798 5.3 1508.0 1.8 a 06:57 17-4369A 11.5 1.6 9.9 50 1 264 816 5.8 1474.0 1.4 a 07:13 17-4369A 11.3 2.1 9.2 53 2 246 853 6.4 1488.0 1.5 a 07:30 17-4369A 11.0 2.4 8.6 55 4 256 805 7.5 1484.0 1.6 a 07:59 18-4299A 10.8 3.4 7.4 60 2 240 1011 6.0 1472.0 1.5 a 08:16 18-4299A 10.6 3.5 7.1 61 1 220 970 6.0 1479.0 1.5 a 08:32 18-4299A 10.7 3.5 7.2 61 2 202 955 5.9 1478.0 1.6 a 08:48 18-4299A 10.8 3.3 7.5 60 1 208 891 6.0 1477.0 1.7 a 09:05 18-4299A 10.9 3.3 7.6 59 1 212 1011 5.4 1470.0 1.6 a 09:22 10-4395A 11.1 3.0 8.1 57 1 221 956 6.2 1479.0 1.8 a 09:38 10-4395A 10.3 3.2 7.1 61 4 246 905 6.2 1492.0 2.0 a 09:54 10-4395A 10.0 3.7 6.3 65 2 252 975 5.8 1486.0 1.9 a 10:11 10-4395A 10.2 3.8 6.4 64 2 257 948 5.9 1494.0 1.8 a 10:42 15-3647A 10.1 3.7 6.4 64 3 261 960 36.2 1490.0 1.9 a 10:59 15-3647A 10.3 4.2 6.1 65 5 280 882 25.5 1492.0 1.5 a 11:15 15-3647A 10.6 3.5 7.1 61 3 305 866 5.5 1493.0 1.5 a 11:31 15-3647A 10.6 3.0 7.6 59 6 352 881 5.3 1494.0 1.4 a Wind 1 um DIMM IRSC Time Temp C Dewp C MPH Dir Dust fwhm mean sigma 18:00 16.5 5.0 9.4 246.4 657 18:15 17.4 5.4 10.7 219.0 758 18:30 14.9 4.0 7.1 196.9 688 18:45 13.7 3.6 4.9 190.7 730 19:00 15.6 5.0 11.6 218.8 741 19:15 14.5 4.2 10.3 255.8 867 19:30 17.6 5.2 13.5 236.9 780 19:45 15.3 4.0 14.6 239.8 833 20:00 17.2 5.0 8.4 271.5 828 20:15 17.3 4.9 11.9 233.4 734 20:30 15.2 3.6 13.4 243.1 713 20:45 18.3 5.0 10.0 239.4 747 21:00 15.1 3.2 7.2 254.9 796 21:15 16.5 5.2 14.6 266.2 969 21:30 16.2 2.0 12.7 297.0 782 21:45 16.7 4.3 12.8 267.3 942 22:00 17.4 5.2 10.3 264.6 858 22:15 16.2 4.2 6.9 267.1 884 22:30 16.8 3.5 7.4 257.3 860 22:45 17.0 2.9 14.3 263.8 863 23:00 17.9 3.6 8.4 261.1 849 23:15 18.0 3.6 8.3 269.5 868 23:30 17.1 1.9 10.2 285.3 793 23:45 15.6 1.9 7.4 282.8 803 00:00 16.0 4.1 11.2 243.0 989 00:15 15.3 4.4 5.7 262.2 830 00:30 14.6 4.4 8.6 224.9 1077 00:45 13.7 4.3 9.4 232.3 836 01:00 12.8 3.8 8.8 236.0 857 01:15 12.3 3.4 6.0 259.9 830 01:30 12.2 3.2 5.3 260.9 828 1.25 1430 6.41 01:45 12.4 2.8 6.9 268.5 788 2.06 1452 6.04 02:00 12.4 2.7 11.0 289.1 864 0.99 1456 6.59 02:15 12.6 2.2 7.9 274.1 810 0.94 1450 6.00 02:30 12.4 2.4 9.2 316.6 819 1.15 1457 6.08 02:45 12.4 2.0 4.0 283.6 838 1.13 1457 5.85 03:00 12.0 1.7 3.8 347.6 854 2.41 1485 6.40 03:15 11.6 1.2 7.9 325.5 776 1.09 1468 5.59 03:30 11.9 0.9 1.2 303.5 709 1.29 1485 5.93 03:45 10.9 1.0 3.4 310.5 788 1.04 1488 8.80 04:00 11.1 1.2 1.6 314.6 785 5.33 1484 5.21 04:15 10.9 1.4 2.5 323.0 742 0.74 1480 5.17 04:30 11.6 1.2 2.9 271.2 767 1.44 1472 5.35 04:45 11.7 1.6 1.4 237.0 755 0.62 1475 5.21 05:00 11.8 1.4 1.2 239.0 737 0.52 1489 5.30 05:15 11.7 1.4 2.2 269.3 751 0.59 1486 5.05 05:30 11.8 1.7 1.2 233.0 807 0.57 1491 9.62 05:45 10.8 1.3 7.4 59.7 794 1.31 1501 7.61 06:00 10.7 1.2 5.8 63.3 720 1.63 1508 5.34 06:15 10.4 1.3 9.7 61.8 718 1.51 1489 5.31 06:30 10.3 1.5 8.2 59.8 798 1.69 1501 5.52 06:45 10.9 1.4 0.2 245.8 772 1.37 1511 5.68 07:00 11.6 1.4 2.8 256.7 816 0.67 1499 5.81 07:15 11.7 2.1 2.3 248.4 853 0.75 1486 6.57 07:30 11.3 2.2 5.0 255.0 805 1.05 1485 7.18 07:45 11.2 2.9 2.0 245.3 875 1.05 1483 6.69 08:00 11.3 3.2 2.3 247.5 1011 0.97 1476 5.55 08:15 11.2 3.5 1.7 222.8 970 0.93 1480 5.95 08:30 11.2 3.4 2.0 215.8 969 0.94 1478 6.25 08:45 11.6 2.9 1.0 211.1 916 1.05 1482 5.77 09:00 11.4 2.4 1.2 222.6 930 1.07 1472 5.65 09:15 11.4 -0.2 0.3 267.5 967 1.25 1480 5.93 09:30 10.8 3.0 5.3 237.8 922 1.24 1482 6.05 09:45 10.8 3.0 2.7 252.4 859 1.17 1492 5.90 10:00 10.6 3.7 2.0 250.5 999 1.15 1489 6.34 10:15 10.0 3.6 2.5 252.0 938 1.30 1492 5.51 10:30 10.0 3.4 2.3 249.0 870 0.91 1495 7.57 10:45 10.5 3.5 4.2 273.7 960 1.38 1427 72.25 11:00 10.7 3.8 5.0 277.2 882 1.71 1493 11.81 11:15 11.0 3.3 3.4 301.5 866 1.26 1493 5.64 11:30 10.0 2.9 5.1 351.8 877 0.97 1495 5.27 11:45 10.7 1.7 4.8 350.1 909 0.99 1497 5.10 12:00 10.5 2.0 2.6 345.8 911 1.28 1505 5.00 ---- Telescope Status ---- 01:14:40 encl25m : open; 11:54:36 encl25m : closed; No interlocks bypassed Status at: 12:07:47 Telescope stowed at: 121.0, 30.0, 0.0 mount Instrument mounted: cartridge = 13 Counterweights at: 284, 283, 284, 285 LN2 autofill systems: Connected and turned on -180L LN2 dewar scales: SP1 263.2 lbs, 20.0 psi SP2 253.8 lbs, 20.0 psi ---- Software Used ---- getVersions, 2011-09-23 00:49:34 ----STUI software: STUI: 1.1 2011-09-09; alerts: v1_2_0; apo: v1_7; boss: trunk+svn126373; boss.daq: 1.3.1; boss.specMech: 3.0.1; gcamera: v1_2_3; guider: v1_3_11; hub: Tag: sdss3_v1_1_8; mcp: v6_6_10; mcp.plc: 28; mcp.azFiducialVersion: v1_96; mcp.altFiducialVersion: v1_96; mcp.rotFiducialVersion: v1_96; platedb: v1_0_5; sop: v1_2_9; sos: v1_1_7; sos.idlspec2d: v5_4_37; tcc: 2.14.0; -----Other software sdssProcedure(sdss3): v3_06; idlspec2d (sos3) --- v5_5_1 plate-mapper3 ------ NOCVS:v5_0_13 ---- Mirror Numbers ---- PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A: -0.129 -0.127 Axial B: 0.073 0.08 Axial C: -0.007 -0.004 Trans D: 0.4093 0.40935 Lateral E: 10.668 10.6553 Lateral F: 12.2809 12.2809 GALILS Commanded: 11300 -650 5500 19600 14350 13950 Actual: 11300 -650 5500 19600 14350 13950 SETMIR VALUES PrimDesOrient: 0.00 -24.31 11.30 612.35 1325.90 PrimOrient: 0.00 -24.31 11.40 612.32 1325.79 SECONDARY: ---------- Focus: 0.00 Air temp: 13.6 Altitude: 30.0 MIGS TONIGHT NOMINAL Axial A: -8.409 -8.408 Axial B: -8.704 -8.705 Axial C: -12.158 -12.158 Trans D: -10.031 -10.018 GALILS Commanded: 1577450 1611550 1562700 -9050 -6750 Actual: 1577463 1611542 1562704 -9050 -6750 SETMIR VALUES SecDesOrient: 1257.00 13.00 8.00 -60.00 174.63 SecOrient: 1256.98 13.02 8.00 -60.38 174.68 ---- Problems in Detail ---- On Sep 23, 2011, at 7:10 AM//Sep 23, 2011, dmbiz@apo.nmsu.edu wrote: Hi Dan, Steph asked us to continue experiments with automatic scale change. We did it during the guider exposures 440-470 (MJD=55827). The exposure was set to 6 sec - the lurches are seen better that for 12 sec exposure time. This is what we see: - manually commanded scale change by 0.0005 creates 1 arcsec lurch. This is what we use to create them (in + and - directions during an exposure). - the lurch does not depend on the status of "Focus" button: it can be either on or off, does not matter. - the lurch does not depend on the "Axis" button either. - if the "Axis" button is turned off, the guide star lurch of ~1" keeps showing in the guider window, it does not disappear at least for several guiding cycles. Apparently, the lurch is not a result of interference between the auto Focus correction and Axis correction. Also, this is not a result of uneven motion of pistons during the scale correction: it does send guide stars to a slightly wrong place. Dmitry