[Comm2011] Fwd: Readnoise mystery

[helmich]

-------- Original Message --------
 		SUBJECT: 
 		Readnoise mystery
 		DATE: 
 		Thu,  5 May 2011 02:46:33 +0200
 		FROM: 
 		helmich 
 		TO: 
 		"Valentijn  E.A. (valentyn)" , Kuijken , Dietrich Baade , Olaf
Iwert , Christoph Geimer 
Here are 4 plots of read noise values in ADU. The last two plots of
this evening should show readnoise values like the plot for 2 May,
but the values remain high as if the last changes were not reverted.
The last readnoise template was taken to confirm this unexpected
result. In this plot we see on top of this a very high readnoise for
CCD 91. Cross cuts in skycat of that CCD show a strange noise
pattern.

Ewout 
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