[Comm2011] OCAM2 daily log day 3

[John P. McFarland]

Hi Jeffrey,

Thanks for the feedback.  How is the actual overlap?  It would be very 
interesting to see a 9 square degree mosaic, but only when other higher 
priority tasks are completed.  Let me know if you need any input for the 
processing.

Cheers,


-=John


On Fri, 10 Jun 2011, Jeffrey Bout wrote:

>> -is the 3x3 grid of 5-point dithers as you expect?
>
> The CRVAL pointings of the SA113 3x3 grid 5point dithers are exactly
> on the decimal plate system (the central one of each 5 point dither).
> So YES
>
> Jeffrey
>
> 2011/6/9 Gijs Verdoes Kleijn <verdoes at astro.rug.nl>:
>> Dear Jeffrey, Ewout, Gert, John,
>>
>> Thanks John for the nightlog.
>> Jeffrey, could you inspect the 3x3 grid data? Answers we are looking for
>> in order of priority:
>> -is the 3x3 grid of 5-point dithers as you expect?
>> and then:
>> -what is the astrometric quality of the coadd: talk to Kor and Erik Deul
>> how to do this. And John, you might have advice how to proceed.
>> and finally:
>> -non-photomeric indeed?: come talk to Ewout/me if needed.
>>
>> Ewout+Gert is looking into the 32 offsets. I propose Gert takes the lead
>> in this so Ewout can concentrate on the polar field analysis.
>> Questions here are:
>> -32 positionings in order?
>> -exptime ok: enough standard stars.
>> -should data be repeated: data useful at all given non-photometric
>> conditions?
>>
>> Best wishes, Gijs
>>
>> John P. McFarland wrote:
>>> Hi All,
>>>
>>> Tonight was quite a productive night.  Unfortunately the Toelner is
>>> still not responding, so no new quick checks (despite the 51 test
>>> quick checks) or 4-angle dome flats.  The problem will hopefully be
>>> solved today.  Andrea, Koen, and Dietrich arrived tonight and worked
>>> until around midnight when I took over.
>>>
>>> The conditions were relatively good with mostly excellent 0.5-0.7
>>> arcsec seeing, but somewhat poor transparency.  It is difficult to say
>>> which observations will be photometrically useful.  Several polar
>>> field observations were obtained, so the variable conditions should be
>>> seen there as well.  Complete 32 CCD offset observations in z and g
>>> were obtained for SA107.  These are almost perfect compared to the
>>> last nights' sets, but there was still some very light cirrus visible
>>> on the all-sky cam during these.  Also, please check the 32 CCDs
>>> exposures overlap for the center of the field.  The center was placed
>>> on all the CCDs in the order that they are stored in the RawFitsData.
>>>
>>> A donut template was attempted for the VST people (requested by Koen),
>>> but failed due to some template keyword error (Andrea and Koen will
>>> have to investigate this).  Nonetheless, the focus offsets were done
>>> and the required data secured.
>>>
>>> Following this, the night was wrapped up with a 3x3 grid from the
>>> newest plate system centered on about the SA113 field, taken with
>>> dither,N=5 in r for 60 seconds per exposure.  Please check these out
>>> to make sure all the offsets were done correctly.
>>>
>>> Cheers,
>>>
>>>
>>> -=John
>>> ------------------------------------------------------------------------
>>>
>>> _______________________________________________
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>>
>> --
>> --------------------------------------------------------------------
>> |dr Gijs Verdoes Kleijn         |   astronomer                     |
>> |e-mail: verdoes at astro.rug.nl   |   OmegaCEN / Kapteyn Institute / |
>> |www: www.astro.rug.nl/~verdoes |   Target                         |
>> |tel: +31-50-3638326            |   University of Groningen        |
>> |mobile: +31-654658050          |   postal address:                |
>> |                               |   Kapteyn Astronomical Institute |
>> |                               |   Postbus 800, 9700 AV, Groningen|
>> |                               |   The Netherlands                |
>> --------------------------------------------------------------------
>>
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