Surface Brightness of Deep-Sky Objects Measured with a Digital Camera

Surface Brightness of Deep-Sky Objects Measured with a Digital Camera
http://www.clarkvision.com/astro/sur...roduction.html
http://www.clarkvision.com/astro/sur...y3.v12-800.jpg

"The Surface Brightness distribution of an object determines its
contrast and visibility as well as the exposure times needed by a
camera to record it on film or an electronic sensor. Modern digital
cameras have a good linear response and can be used for photometry.
However, their response curves for the red, green, and blue sensors
are different than the traditional B and V systems that astronomers
use. However, this could be an advantage for recording truer color
and predicting what the eye can see".

See: http://www.clarkvision.com/astro/sur...roduction.html