Specifications

Illustration 22: ...and a resulting image

If we take images for individual colors and also luminance image, possibly

with different binning and exposure times, the calibration starts to be

relatively complex. We need dark frame for every exposure time and

binning. We need flat field for every filter and binning. We need dark

frames for every flat field. This is the price for beautiful images of deep-sky

wonders.

Color images with color camera

Single-shot color cameras use special CCD detectors with red, green and

blue color filters applied directly on individual pixels. G3 cameras can be

equipped with such detectors (the name of the camera is then followed by

the letter “C” to indicate color CCD).