Coverage of
common CCDs on various targets as a function of focal
length
Just what will you actually be able to fit on that scope and
camera? You might be surprised. Many CCD cameras have fairly
small chips that make their view of the universe about as big
as a 6 mm Plossl gives you. Click on the links below to see
examples of approximate coverage of different sized CCDs as a
function of scope focal length. Images taken from the
Digitized Sky Survey.
Type 1/3" CCDs (~6 mm diagonal)
Type 1/2" CCDs (~8 mm diagonal)
Type 2/3" CCDs (~11 mm diagonal)