[Comm2011] OCAM2 daily log day 4

[John P. McFarland]

Hi Gijs,

That is in the works, but we have two problems: one is we have to wait for 
Bernard and Achim to figure out the Toelner issues before we can take flats, 
and the second is ambiguity of the rotator angle as recorded in the headers. 
The former will have to wait until at least tomorrow and the latter will 
require flawless logging until we have it figured out.

Cheers,


-=John


On Fri, 10 Jun 2011, Gijs Verdoes Kleijn wrote:

> Thanks John,
> 
> Our first analysis of the g twilights at 4 rotator angles indicate it will
> be useful to have:
> for r 4 rotator angles twilights (alternative i)
> domeflats at same rotator angles.
> 
> See you Sunday.
> Cheers, Gijs
>  
> 
> Op 10-6-2011 12:29, John P. McFarland schreef:
>       Hi All,
>
>       Tonight we managed to get sky flats in g and r.  Following the
>       guiding testing where VST responded well to the corrections, a
>       monitoring template was taken with the ADC out and then in,
>       checking the focus in between. Following this, the linearity
>       test was started.  The night was initially photometric, but very
>       light clouds were visible during at least part of the linearity
>       exposures.  Also, the long (800 second) exposures show the
>       effect of significant tracking errors.  Please check if these
>       are still useful. If not, we can use 10, 100, 200, and 400
>       second exposures for the linearity instead.  Following these
>       observations, there was only enough time for one 32 CCDs
>       exposure with the ADC in.
>
>       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                         |
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