From: kaike pan
Subject: Re: [sdss3-25mlog 36] 2.5m obslog 20110308 (MJD 55629)
Date: Wed, 9 Mar 2011 05:58:57 -0700
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On Mar 9, 2011, at 5:34 AM, alaina@apo.nmsu.edu wrote:
>
>
> ---- Observing Summary ----
>
> Collimator motors are accumulating a tilt throughout the night.
> After 4 cart
> changes, sp1B is 150 more than it should be.  Ticket 1246
>
    For more information, see the ticket.
   We accumulated 100 steps on B actuator of SP1, -20 steps on B
actuator of SP2
during 2 weeks (not one night). But the accumulation seems real
because I checked and
found it increases gradually, a few step per night.
   -kaike
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On Mar 9, 2011, at 5:34 AM, alaina@apo.nmsu.edu =
wrote:---- Observing Summary =
----Collimator motors are accumulating a tilt throughout =
the night.  After 4 =
cart changes, sp1B is 150 more than it should be.  Ticket 1246   For more =
information, see the ticket. =
   We accumulated 100 steps on =
B actuator of SP1, -20 steps on B actuator of =
SP2 during 2 weeks (not one night). But the accumulation =
seems real because I checked andfound it increases =
gradually, a few step per =
night.  -kaike=
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