-- Main.jill - 13 Jan 2007

-- Main.gredel - 14 Jan 2007

clear sky, low wind, strong ice accumulation on enclosure, trying to de-ice by exposing walls to sun

Mirror at +1 degree centigrade, ambient temp -13 C (from SMT) --> don't expect too good image quality mirror cooling started

some doubts about SMT temperature, measurement outside building with portable mini-temp-anemometer gives -4 C --> what is the correct temp?

21:12 25 x bias (U-band) --> 880 ADU not all bias frames get transferred, known problem, 'too many downloaded pixels', does not occur for longer exposures in sci obs

21:28 dark 900s (U-band) --> 880 ADU

21:46 dark 900s (U-band) --> 880 ADU

high clouds moving in

22:12 dark 3600 s (U-band) --> 890 ADU

sorry again - too much ice accumulation, cannot open
Topic revision: r3 - 15 Jan 2007, gredel
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