[Comm2011] report from Groningen

[Gijs Verdoes Kleijn]

Dear Ewout et al.,

A brief summary report for you from Groningen data analysis:
Tilt: can we help (see John's email for details)?   
PSF distorsions :  can we help (see John's email for details)?
Crosstalk: we will also look into effect of cable replacement here.  
Linearity: well within specs for all CCDs  
Saturation:     already at 57000 ADU   
Readnoise:    seems in spec: to be confirmed completely   
Bias: seem in spec: to be confirmd completey   
Hotpixels:     hot pixel counts look ok compared to ILT 2005 report.
DomeFlats: patterns noted which were also seen in Fabrice's thesis. 
Effect on data reduction TBD.       
Coldpixels: counts look ok compared to ILT 2005 report         
Science Data: data reduction on-going. Quick look raw data so far: 
cosmetics: bad columns here and there, reflected light. 

Feel free to off-load tasks on us when possible.

Best wishes, on behalf of team here, Gijs

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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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