LBT OSU/RC Queue Observing: UTC 2009 March 24 

Observers: Paul Martini, Ondrej Pejcha
TO: Wayne Wack
AA: Olga Kuhn

Summary: Photometric at sunset. Started with large temperature differential
between mirrors and ambient. Poor seeing permitted only observations of the
Mainbelt, although some of the images were taken under worse seeing than the
limiting value. Lost ~three hours due to seeing >4". Seeing gradually
improved, but a chiller failure forced us to close early.

Observed: 

M81, two epochs of Mainbelt 0, 5, 10, 15 and 20 degree fields.

Detailed Notes:

UT 0000 

Delay in getting bias frames due to problem with the HBS. 

UT 0100 

Biases

UT 0200 

Mirror temperatures are about 6 degrees warmer than ambient. 
Sky flats in BR, VI. Former are good (15-30k counts), later are okay but 
have a fair number of stars (did 10-15s integrations to get enough counts). 

UT 0230

Setup on M81/M82. Convergence was poor, image quality likely poor too. 

UT 0300 

Starting M81, seeing about 3.5". Moving on to another program. 

UT 0330

Moved to Mainbelt program for 0 degree field, seeing still about 3.5".

UT 0400

Moved to 5 degree field. Seeing slightly improved to ~3".

UT 0430

Data on Mainbelt 10 degree field. Seeing still at 3".

UT 0445

Mainbelt 15 degree field. Repeated observations due to an error in the blue
rotator.

UT 0530

Mainbelt 20 degree field. Seeing got to ~5".

UT 0715

Seeing improved to ~3.8". Obtained second epoch of Mainbelt 0 degree field.

UT 0745

Seeing steady at 3.5". Obtained second epoch of Mainbelt 5 degree field.
OB repeated due to interrupted connection to the red camera.

UT 0830

Attempt to obtain second epoch of 10 degree field failed due to technical
problems (mirror panic and chiller malfunction).

UT 0930

Second epoch of Mainbelt 10 degree field. Seeing between 3" and 2.5".

UT 0945

Second epoch of Mainbelt 15 degree field. Seeing between 2.5" and 2".

UT 1015

Second epoch of Mainbelt 20 degree field. Seeing slightly above 2".

UT 1100

Chiller failure, closed.