Subject: 2.5m obslog 20080109 (MJD 54475)
Date: Thu, 10 Jan 2008 06:06:40 -0700 (MST)
From: hjbrew@apo.nmsu.edu (Howard Brewington)
                       APACHE POINT OBSERVATORY SDSS 2.5M
                                 OBSERVING LOG
                           Wednesday January  9, 2008
                                  (MJD 54475)
---=== OBSERVING TEAM ===---
Viktor Malanushenko (day)
Howard Brewington (observer)
Elena Malanushenko (observer)
---=== OBSERVING PLAN ===---
	Science!
---=== OBSERVING SUMMARY ===---
The seeing was very bad for a big part of the night (5.0")
Added good signal to plates: 1630, 2609, and 1636
---=== OBSERVING LOG ===---
Afternoon:
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All equipment are checked and work properly.
Spectro collimation set for 0C.
Ventilation is started at 23:25Z.
Cart 9 is mounted.
Night:
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00:10Z Sunset
01:31Z Enclosure off, topped-off spectro secondary dewars, checked top/bottom
       balance, did a test slew, checked fiducial crossing in each axis,
       started the DIMM.
01:39Z Evening twilight
01:49Z Cart 09, plate 2865 (segFaint170). An fk5 star was used to find field.
       Under photometric skies, the seeing was about 1.4" as reported by the
       DIMM. One (bad) exposure was completed; see below.
       02:03 48741 10.0   flat
       02:06 48742 2.0    arc
       02:35 48743 1501.0 target (bad)
02:40Z Cart 01, plate 2866 (segFaint170)  An fk5 star was located but after a
       skicky and goToField, the guide stars were not found. This process was
       tried again without success.  Finally, offsets were made at the field
       to locate the guide stars. The seeing was about 1.4" as reported by the
       DIMM; however, seeing decreased to ~3.0" by the end of the exposure.
       This exposure was bad ; see below. A second exposure was not started
       after the (poor) SOS results were posted.
       03:00 48744 10.0   flat
       03:02 48745 2.0    arc
       03:26 48746 1201.0 target (bad)
03:35Z Cart 07, plate 1630 (photoz79). Field was found with goToField. Seeing
       was 2.5 to 3.5" as reported by the DIMM.
       During the second exposure, we lost power on site and the
       generator turned on for about ten minutes.  A few minutes later, after
       this exposure readout, the telescope halted (alt, az, and rot). A
       goToField was done, and the guider was restarted, which restored the
       guide stars.  Wind had increased to ~38 MPH. A total of three exposures
       were done; the second one was bad; see below.
       04:09 48747 10.0   flat
       04:12 48748 2.0    arc
       04:42 48749 1500.0 target
       05:10 48750 1500.0 target (bad)
       05:43 48751 1500.0 target
05:48Z Cart 02, plate 1636 (photoz79). Field was found with goTofield. Seeing
       was 1.3" as reported by the DIMM. Wind gusts had improved to
Coll_motor_A -11051
Coll_motor_B -11028
Coll_motor_C -12137
sp2>
Coll_motor_A -3943
Coll_motor_B -4890
Coll_motor_C -5041
------------------
tpm_TM_PMSSAvg                1.67643
tpm_TM_TelairAvg.VALA         3.2425
------------------
IDL 5.5a> collimate, 48737
% Compiled module: COLLIMATE.
Reading /data/spectro/54475/sdR-b1-00048737.fit
Reading /data/spectro/54475/sdR-b1-00048738.fit
 COLLIMATE: Min offset = -1.15 pix
 COLLIMATE: Max offset =  0.99 pix
 COLLIMATE: RMS across CCD =  0.53 pix
 COLLIMATE: Mean offset = -0.05 pix
 COLLIMATE: Camera b1 appears to be IN-FOCUS (|mean|  0.15 pix)
 COLLIMATE: Predict blue camera ring movement of   -7.2 degrees for spectro-2
 COLLIMATE:   (if red is already in focus)
Log file        = Collimate-54475-b2-00048737.log
PostScript file = Collimate-54475-b2-00048737.ps
Reading /data/spectro/54475/sdR-r1-00048737.fit
Reading /data/spectro/54475/sdR-r1-00048738.fit
 COLLIMATE: Min offset = -0.57 pix
 COLLIMATE: Max offset =  0.46 pix
 COLLIMATE: RMS across CCD =  0.28 pix
 COLLIMATE: Mean offset = -0.12 pix
 COLLIMATE: Camera r1 appears to be IN-FOCUS (|mean|  0.15 pix)
 COLLIMATE: Predict (red) piston movement of  3071 steps for spectro-2
 COLLIMATE:   Issue SOP command: "sp2; mechPiston 3071"
Log file        = Collimate-54475-r2-00048737.log
PostScript file = Collimate-54475-r2-00048737.ps
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Initial MechSend s:
sp1> -11051,-11028,-12137
sp2> -3943,-4890,-5041
T current +1.7C, expected T=0C
Collimate results sp1> mechPiston +1134 steps; sp2> +3071 steps
Movements sp1> -566, sp2> +1377
    sp1 did not move
New MechSend s:
sp1> -11051,-11028,-12137
sp2> -2562, -3512, -3663
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