Date: Sun, 27 Mar 2005 15:25:49 -0700 (MST)
From: Jurek Krzesinski
Subject: Re: 2.5m obslog 20050326 (MJD 53456)
On Sun, 27 Mar 2005, John Barentine wrote:
>                                  OBSERVING LOG
>                             Saturday March 26, 2005
>
> No on-sky operations tonight because of a critical failure of the rolling
> enclosure electrical system (see Problems section).
Bruce and Jurek checked if we can open the dome during the day after
the Sun melted the ice. We were able to move the enclosure off and on
without any problems. We also checked the power rails and found them
clean of ice, after they were beeing heat by direct sun light.
We support the hypothesis that the problems from the last night were
connected to the ice building on the power rails after some snow shower
which took place during the day.
Also be aware that ODH sensor in a lower enclosure is not working
properly. We left it on buzzzzzing for those who will came later.
If you want to switch it off tell Jurek and he will show you
how to do it. For the safety reason we left the hand ODH meter in the
controll room.
   Jurek and Bruce