From: "Pete Newman"
Subject: RE: 2.5m obslog 20031228 (MJD 53002)
Date: Mon, 29 Dec 2003 12:59:07 -0700
Two points, one trivial, one serious:
Observers wrote:
> The temperature tonight was changing between 11.1 C and 13.1 C.
That's -11.1 C and -13.1 C.
> u3 went wrong tonight as well- an e-mail to Jim about captured bias frames
> was sent to Jim (see it in the problem section).
The last time this happened (the first time?) was 2002/3/2 (MJD 52336, see
http://www.astro.princeton.edu:81/sdss-25mlog/msg.1018.html) which was also a
night plagued by cold-weather problems.  Obviously, the CCDs themselves are
well below ambient temperature, so does this point at a problem with the
dewar 3 power supply or other electronics at ambient?
--Pete