\OSU/RC Queue Observing UTC 2011 November 22
(civil date 2011 Nov 21/22)
===========================================

Observers: K.Z. Stanek, R. Stoll (OSU)
Observing Assistant: Steve Allanson
Support Astronomer : Dave Thompson (from home)
Instrumentation    : Tim Shih

Instrument:  MODS

Summary:  

It is beautiful and clear, but we are closed all night, first due to high 
humidity, and for the rest of the night due to ice on the dome.  Because ice 
was accumulating until after sunset, the snow-melt system doesn't help us 
out; they've found that using it at night simply melts the rime and refreezes 
it into a solid ice sheet.  Assuming this weather holds, we will be open 
tomorrow, and we are raring to take data.

Details:

Sadly, none.  We took as full a set of calibrations as we could yesterday, 
so there's little point in repeating them.  No data tonight.


09:04:
Taking 0.8" and 1.0" dual grating mode flats.  Rick will probably explain 
that the 0.6" flats serve this purpose just as well, but we haven't anything 
better to do tonight.

Note:  I did not scale the exposure times when changing the slit width, so 
this first set may saturate.

grflats1.cal
grflats0_8.cal

They do not appear to be saturating, but at 57k counts the chip may be 
non-linear?  I'll run another set with exptimes halved.

10:11
grflats1s.cal
grflats0_8s.cal

NB: enclosure lights were on during the first set.  They were turned off at 
10:11 before the second set began.