Astro Photgraphy with PhaseOne PhaseOne P25+back black cal

Questions, comments and suggestions regarding Phase One P+ series and P series digital camera backs.

Astro Photgraphy with PhaseOne PhaseOne P25+back black cal

Postby juan1 » Sun Jul 16, 2017 3:23 am

I tried doing some astro photography last night and i had some unexpected results. one exposure at 8 minutes had revealed ore stars than a exposure of 36 minutes. In fact the 36 minute exposure was completely black. ISO was at 100 on both images. My question is this; The longer the exposure, the more aggressive the black calibration? If so, is there a solution to not have the black cal mistake stars from noise? I would very interested if anyone has other possible solutions or advise.
juan1
 
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