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Thanks John,<br>
<br>
Our first analysis of the g twilights at 4 rotator angles indicate
it will be useful to have:<br>
for r 4 rotator angles twilights (alternative i)<br>
domeflats at same rotator angles.<br>
<br>
See you Sunday.<br>
Cheers, Gijs<br>
<br>
<br>
Op 10-6-2011 12:29, John P. McFarland schreef:
<blockquote
cite="mid:alpine.LRH.2.00.1106101050001.26589@bolton.intra.astro.rug.nl"
type="cite">Hi All,
<br>
<br>
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.
<br>
<br>
Cheers,
<br>
<br>
<br>
-=John
<br>
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