photometry with 8 bit cameras

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#583401
Robin Leadbeater
Participant

Long exposure astro cameras with higher dynamic range are certainly better for photometry but I played around with  8 bit camera photometry a few years back and found it was possible to do high(ish) precision photometry with 8 bit cameras (even exoplanets, just)  provided you sum many frames to get the counts. eg

http://www.threehillsobservatory.co.uk/astro/Photometry_GO_Com.htm

http://www.threehillsobservatory.co.uk/astro/TrES_1.htm

One thing to watch though with these cameras is that the gamma is set to 1 so the response is linear.

Cheers

Robin