Date: Mon, 31 Aug 2015 16:03:27 -0600 (MDT)
Subject: Re: [sloan-25mlog 2544] Re: 2.5m obslog 20150830 (SJD 57265)
From: "Audrey Oravetz"
Understood. Thanks,
Audrey
>    I took a look at the fiducial logs, and fiducials 15, 26, and 27 have
> consistently high errors, which would seem to indicate that the
> fiducial table doesn’t match the position of those fiducials for some
> reason.  All other fiducials seem normal in their errors.  I would
> recommend not forcing corrections for fiducials 15, 26, and 27.
> Hopefully this goes away with the next fiducial data set and pointing
> model.
>
> -Dan
>
>
> On Aug 31, 2015, at 7:29 AM, Robert Lupton the Good
>  wrote:
>
>> We don't correct large errors on slew because we're not sure they're
>> correct.  If you hadn't applied that +3000 would you have found the
>> stars?
>>
>> 					R
>>
>>> The 15-degree fiducial for the azimuth
>>> drive read (roughly) +3000 - too large to correct, during the slew to
>>> cart
>>> 4. We manually corrected it and slewed back to the field only to find
>>> that
>>> the stars were not there (we had this problem once before a few nights
>>> ago). We used a spiral pattern to find this field, which turned out to
>>> be
>>> -5" off in RA and +16" in DEC.
>> ____________________________________________________________
>> Logs of Nightly APO Activities
>> https://trac.sdss.org/tracmailman/browser/private/sloan-25mlog/index.html
>
>