Observing log for UT 2011/02/10

Observers: Jeff Blackburne (OSU), Jill Gerke (OSU)

Observing Assistent: Geno Bechetti
Support Astronomer: Dave Thompson (from Tuscon)
Instrumentation: Doug Officer

Instrument: Lucifer

Conditions: Clear at sunset, with haze around the horizon. Temperature
-6C, winds around 10 m/s, and 50% humidity. Temp fell steadily through
the night, and humidity rose. Winds held steady. Clear all night. We
had to close about 0.5 hour before twilight began because of the
humidity.

Seeing: Varied between 0.8'' and 1.5''

Programs: 
OSU_m82spec -- completed

OSU_lens -- no actual data taken


Detailed Notes:

00:38ish started narrowband (BrG and H2) flats.

01:06 Sunset. Started K and H flats.

2:00 Pointing and collimation. Serious trouble with focus and coma.

04:20 Started OSU_lens_HE0435.acq. Guide star was vignetted, causing
collimation to fail.  Heading to a nearby Persson star to
collimate. More serious collimation problems.

05:52 Aquiring telluric for program OSU_m82spec.
06:10 Arc and flat for telluric
06:23 Acquiring velocity standard, followed by arc and flat.
06:50 Aquiring M82 east field.
07:00ish Starting science exposure
09:01 Arc and flat
09:18 Acquiring telluric, followed by arc and flat.
09:36 Acquiring M82 west field.
09:43 Starting science exposure.
11:53 Arc and flat.
12:03 Acquiring telluric number 2, followed by arcs and flats.

Humidity has been over 90% for a while. D. Thompson warns that the
Lucifer window is in danger of fogging, but we haven't seen anything
yet.

12:28 Frost is forming outside. Closing.