[Aavso-photometry] odd observations of U CRT comp stars

[Yenal Ogmen]

Hi all,

Last night I observed U Crt. I took 5 images, each one
is a stack of 10 frames of 10 seconds. When I tried to
do photometry I see that there is something wrong.
Brightness of the comparison stars 127 130 135 and 138
of the chart d are different than what I see on my
images. Fluxes of these stars show that 127 is fainter
than 130 and 130 is fainter than 135. What am I doing wrong?

Yenal Öðmen
  Green Island Observatory Homepage
www.geocities.com/yenalogmen 
Geçitkale 
North Cyprus



 
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