Date: Mon, 20 Aug 2001 13:06:59 -0500
From: Bill Boroski
Subject: Re: 2.5m obslog 20010813 (MJD 52135)
Pete,
I've been away for a week so if this has already been discussed, apologies.
 I'm still wading through a mountain of mail.
Regarding the change in telescope balance, it's possible that the balance
has been changed as a result of the new instrument latch controller that
was installed during the summer shutdown.  The new controller is quite a
bit larger than the old one.  French is always keenly aware of keeping the
telescope in balance, but I don't know what exactly was done to
counterbalance the new controller, or if all of the instruments were
mounted and counterwieght positions verified.  French, you should comment
on this.
-Bill
At 05:17 AM 8/14/01 -0600, Pete Newman wrote:
>            Apache Point Observatory - SDSS 2.5m Observing Log
>
>                      2001 August 13 - MJD 52135
>
>OBSERVERS' LOG
>==============
>
>
>The telescope balance has changed.  The counterweight positions required
>are about 50 lower than before the shutdown.  So far, we have:
>
>  Engineering camera:   75
>  Spectro cartridge:   250
>