CELESTIAL
CHROMATIC
IMAGERY
Most CCD chips are only capable of recording
monochromatic (or black and white) images. However, by using a special
technique called RGB composite assembly, it is possible to create
color images from monochromatic files. This is done by imaging an
object three times, once through a red,
green,
and blue filter
(hence the term RGB).
Each of these images, then, contains only the spectral signature of that
particular wavelength. When combined together digitally, they produce
a reasonably accurate color representation of that object.
It is also possible to add a fourth layer, a black and white 'luminance'
layer, to enhance the image (this process is called LRGB).
I am just starting out in LRGB imaging, so check back often for new images.
