From: stephanie snedden
Subject: Re: 2.5m obslog 20080301 (MJD 54527)
Date: Sun, 2 Mar 2008 11:30:49 -0700
Interesting. Note by its number that it is an old plate, so was
drilled long ago. Also, the field is at a somewhat high declination,
and this could reflect a poor fit in our pointing model. If you get a
chance to try it again tonight, and don't find an FK5 right away, try
putting in an "offset calib 0.004,0.006 /pabs" from telrun, and do
your spiralPattern around that center. No guarantees, but it might be
worth a try.
Steph
On Mar 2, 2008, at 5:54 AM, Dan Oravetz wrote:
>
>
> Cartridge 9, 769, chunk25
> *************************
> 01:23Z - gotoField.  No guide stars found and no fk5 found in
> either fiber 10
> or fiber 11.  We tried clearing the offsets and that didn't help.
> We tried
> spiral patterns with offsets of 5" and 10" over 2 loops each and
> still did not
> find the fk5.  All fiducial crossings were fine.  We checked the focus
> (relative focus -50) and it was fine for the temperature (~8C)
> compared with
> the previous night's values.  We tried reloading the plate and
> going to the
> field and that didn't work either.  We decided to mount another
> cartridge and
> see if we were experiencing a problem specific to this plate.
>
>