Date: Fri, 21 Apr 2006 12:16:00 GMT From: snedden@apo.nmsu.edu Subject: 2.5m obslog 20060420 (MJD 53846) APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Thursday April 20, 2006 (MJD 53846) ---=== OBSERVING TEAM ===--- Days: Howard Brewington Observers: Stephanie Snedden, Viktor Malanushenko Visitors: Victor Leger ---=== OBSERVING PLAN ===--- Science! ---=== OBSERVING SUMMARY ===--- To start, we got spectroscopy, plate 2077 (cartridge 5) - was DONE. The seening was good, dust was under new criteria, sky was completely clean and we start imaging observations. We got some data on Segue 1260 S strip, then got data on hole area 23 S and on Segue 1062 S strip. More information in to section ImagingDetails. After moon rise we has continue spectroscopy observations. Plate 1849 (cartridge 9) was DONE by three exposure. Plate 2247 (cartridge 4) - special plate: has obtained 5 exposure 120sec each. We wented to twilight. We send e-mail to Brian : ascked check it before declared as done. The dust was approximately 33100, by that, please: mirrow should be cleaned. ---=== OBSERVING LOG ===--- Afternoon: ------------ Found a few problems during the afternoon checkout. The noise bars are still present in the astro/photo monitors. Steph took some images of noise with her digital camera, but it will be a few days before she will be able to process the pictures. I noticed that the gearHead of the south-east Az-motor is leaking oil on the floor of the lower enclosure. I checked spectro focus/collimation and adjusted to ~8-degree C. I noticed while doing a set of preCals that the SOP session returned the many "NaN" as displayed below: Starting Flat field 0 (press cntrl-C to abort) Flushing charge for 15 sec appending BEGIN Exposure is paused; 10s of data were taken appending END EXPOSURE TIME is: 10 2006-04-21 00:13:26Z: NaN value for SPA in spectro fits header 2006-04-21 00:13:26Z: NaN value for IPA in spectro fits header 2006-04-21 00:13:26Z: NaN value for IPARATE in spectro fits header 2006-04-21 00:13:26Z: NaN value for AZ in spectro fits header 2006-04-21 00:13:26Z: NaN value for ALT in spectro fits header 1145578374 1145578402 Closing Flat Field Screen 4 Ne and 4 HgCd lamps are on Starting Arc lamp exposure 0 (press cntrl-C to abort) Flushing charge for 15 sec appending BEGIN Exposure is paused; 2s of data were taken appending END EXPOSURE TIME is: 2 2006-04-21 00:15:43Z: NaN value for IPARATE in spectro fits header 1145578520 1145578540 00:50Z Door and louvers open, fans on (dust=3k). Night: ------------ Spectro: 01:30Z enclosure open, etc. 02:50Z Cartrige 5 Plate 2077, seguefaint105. Done needed FK5. 02:50Z 1200sec S/N= 9.8 7.3 9.8 7.3 03:13Z 1200sec 10.0 7.0 10.1 7.3 03:35Z 600sec 4.0 2.9 3.8 2.8 It was DONE at three exposure. Accumulated S/N=52.5 Imaging (more - in to section ImagingDetails): 04:15Z installed Imager. Run 6101 - On-telescope bias Run 6102 - Donuts for Jim 05:01Z - Run 6103, SEGUE strip 1260 S All the data were good, averaging 1.5 asec FWHM over the run in g 06:59Z Run 6104, Legacy hole 23 S 07:46Z Run 6105, SEGUE strip 1062 S Seeing was good to acceptable, with one bad section (1.8 - 2.0 asec FWHM, frames 25 to 40). The end ramp was done in moonrise. Spectro (continue): 09:30Z Cartrige 9 Plate 1899, chunk95. Done needed FK5 09:43Z 900sec S/N= 5.6 4.4 5.6 6.2 10:00Z 900sec 5.2 4.4 5.5 5.8 10:18Z 1200sec 7.8 5.4 8.1 7.6 It was DONE 10:48Z Cartridge 4 Plate 2247, Segue121. Needed FK5 ! 11:02Z 120sec 11:07Z 120sec 11:12Z 120sec 11:17Z 120sec 11:21Z 120sec 11:50Z We closed, endNight rejoiced. ---=== IMAGING RUN SUMMARY ===--- Run Time Stripe Lambda Last Flavor Comments Start End Begin End Frame ------------------------------------------------------------------------- 6099 23:21Z 23:43Z 100 O -91.52 -86.21 50 ignore 6100 00:50Z 00:53Z 100 O -69.40 -64.00 19 ignore 6101 04:14Z 04:32Z 100 O -18.14 -13.79 43 bias 6102 04:39Z 04:58Z 1260 S -76.51 -71.54 47 calibration 6103 05:00Z 06:46Z 1260 S -79.78 -53.25 191 science 6104 06:54Z 07:43Z 23 S 47.98 60.26 96 science 6105 07:46Z 09:00Z 1062 S 66.32 84.92 138 science ---=== IMAGING RUN DETAILS ===--- Run 6101 - On-telescope bias Run 6102 - Donuts for Jim best focus (a little off, I'm afraid) foc=-270, frame 20 +300 out of focus foc=+30, frame 25 -300 out of focus foc=-650, frame 36 No collimation adjustments made. Collimation looked pretty good (with the usual astigmatism). 05:01Z - Run 6103, SEGUE strip 1260 S Skippy and focus converged by frame 22 Start of ramp: mu 108, frame 26 Start of science: mu 110 frame 41 End of science: mu 129 frame 166 End of ramp: mu 131 frame 180 All the data were good, averaging 1.5 asec FWHM over the run in g 06:59Z Run 6104, Legacy hole 23 S Skippy and focus good from the start Start of ramp: lambda 49, frame 15 Start of science: lambda 51, frame 27 End of science: lambda 56, frame 61 End of ramp: lambda 58, frame 74 Frames 40 - 45 (approx.) may have a change in background level due to 1-m dome lights illuminating the telescope. Noted a few small clouds at collimate, 38689 Reading /data/spectro/53846/sdR-b1-00038689.fit speclog_version: Command not found. Reading /data/spectro/53846/sdR-b1-00038690.fit speclog_version: Command not found. COLLIMATE: Min offset = -0.86 pix COLLIMATE: Max offset = 0.48 pix COLLIMATE: RMS across CCD = 0.35 pix COLLIMATE: Mean offset = -0.12 pix COLLIMATE: Camera b1 appears to be IN-FOCUS (|mean| 0.15 pix) COLLIMATE: Predict blue camera ring movement of 7.1 degrees for spectro-2 COLLIMATE: (if red is already in focus) Log file = Collimate-53846-b2-00038689.log PostScript file = Collimate-53846-b2-00038689.ps Reading /data/spectro/53846/sdR-r1-00038689.fit speclog_version: Command not found. Reading /data/spectro/53846/sdR-r1-00038690.fit speclog_version: Command not found. COLLIMATE: Min offset = -0.22 pix COLLIMATE: Max offset = 0.81 pix COLLIMATE: RMS across CCD = 0.28 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 -1878 steps for spectro-1 COLLIMATE: Issue SOP command: "sp1; mechPiston -1878" Log file = Collimate-53846-r1-00038689.log PostScript file = Collimate-53846-r1-00038689.ps Reading /data/spectro/53846/sdR-r2-00038689.fit speclog_version: Command not found. Reading /data/spectro/53846/sdR-r2-00038690.fit speclog_version: Command not found. COLLIMATE: Min offset = -0.22 pix COLLIMATE: Max offset = 0.46 pix COLLIMATE: RMS across CCD = 0.17 pix COLLIMATE: Mean offset = 0.19 pix COLLIMATE: Camera r2 appears to be OUT-OF-FOCUS (|mean| > 0.15 pix) COLLIMATE: Predict (red) piston movement of -1711 steps for spectro-2 COLLIMATE: Issue SOP command: "sp2; mechPiston -1711" Log file = Collimate-53846-r2-00038689.log PostScript file = Collimate-53846-r2-00038689.ps % Program caused arithmetic error: Floating illegal operand apo_plotbias results: -------------------- IDL 5.5a> --------------------------------------------------------------------------- Filename 02% 05% 10% 50% 90% 95% 98% ------------------- ------ ------ ------ ------ ------ ------ ------ sdR-b1-00038692.fit -5.9 -4.7 -2.6 1.8 7.3 8.4 10.6 sdR-b1-00038692.fit -5.9 -4.7 -2.6 1.8 7.3 8.4 10.6 sdR-b2-00038692.fit -8.3 -6.9 -4.5 1.7 6.8 9.1 10.6 sdR-b2-00038692.fit -8.3 -6.9 -4.5 1.7 6.8 9.1 10.6 sdR-r1-00038692.fit -7.3 -5.3 -4.1 1.3 6.8 7.9 10.1 sdR-r1-00038692.fit -7.3 -5.3 -4.1 1.3 6.8 7.9 10.1 sdR-r2-00038692.fit -8.6 -6.5 -4.5 0.8 6.1 8.2 10.2 sdR-r2-00038692.fit -8.6 -6.5 -4.5 0.8 6.1 8.2 10.2