March 14, 2011
Observers: J. Bechtold, D. Thompson, F. Bian, L. Jiang
2:25pm. Lights off in the dome. Started series of 900s darks for Linhua's observations tonight.
5:15pm. Taking internal flats with Halo 3 for imaging
5 exposures in J, 6 sec each starting with file 5
5 exposures in Ks, 5 sec each
5 exposures in H, 4 sec each
frames 21-40 Dave did WCS testing
5:51pm. Taking sky flats (thin clouds)
10 exposures in Br_gam at 5:54 pm, exposure time 2s, counts ~11000, images 41-50
10 exposures in Br_gam at 6:00 pm, exposure time 2s, counts ~7000, images 51-60
10 exposures in H2 at 6:01 pm, exposure time 2s, counts ~8500, images 61-70
counts are getting higher due to clouds, stopped for a few minutes
Alt changed to 60 deg
Cirrus everywhere as sun is setting. Twilight flats are problematic.
Checked telescope center on Lucifer detector -- ok
6:45pm. Going to star near 3C220 to collimate. Still light out, clouds moving in.
7:10pm. At 3C220 Too bright out to see guide star.
7:20pm. Not collimating.
7:45pm Starting integration. 3c220.spec.txt starting with file #79
LOTS OF CIRRUS
8pm. Seeing 1.1" or so, but still cloudy
8:05pm. Lots of clouds, but seeing 0.8" in guider. However we're getting yellow warnings from the WFS and guide star is elongated. No wind.
9:05pm. Started 3c220.spec2.txt, file starts 94. Seeing 1" still cloudy. This script is the same as spec1 except it starts with an offset to get back to the center.
9:50pm. Seeing 2.2" Looks like it might get clearer eventually.
10:20pm Seeing 1.5"
10:30pm Doing 3c220.arcs.txt
10:35pm Doing 3c220.flat.txt
10:35pm 3c220_tell2.acq.txt Going to the telluric standard
10:50pm 3c220_tell2.spec.txt Seeing 1" Saturated
10:55pm qq.txt Changed exposure time to Dit=5, NDIT=4
11:00 pm Executing sdss1343.slit2.acq.txt
11:20pm Executing sdss1343.spec.txt seeing 1.2"
aborted after one image because AGW unit had RPC communication error and we stopped guiding
11:35pm Reaquiring with sdss1343.slit2.acq.txt. seeing .8" in guider.
11:45pm Execute sdss1343.spec.txt seeing 1.0"
1:30am sdss1343_tell_spec.txt seeing .5"
1:35am sdss1343_slit1.acq.txt Tonight the central wavelength will be at 1.88microns
1:45am sdss1343.spec.txt seeing in guider .45"
3:10am sdss1343.arcs.txt for slit 1
3:15am sdss1343.flat.txt for slit 1
3:16am executing jiang_acq.sdf66.txt Still hazy.
3:35am executing jiang_sci_acq.txt Seeing 0.58" in guider
5:45am. aborted jiang_sci_acq.txt and executed jiang_arc_sdf66.txt and jian_flat_sdf66.txt