Hi all
one of my main goals of astrophotography is to shoot galaxies, a tough subject i know. I live in northern Sydney so i have quite a bit of light pollution. i was thinking of getting a CLS filter for my 600d EOS camera (attached to an f4 10" newt).
http://www.bintel.com.au/Astrophotog...oductview.aspx
i was wondering, how effective are these? will i be able to take photos of magnitude 10 objects with it? will it allow me to have a dark background? or am i doomed with my location.
i have heard that if you have an unmodded DSLR you will get some strange colouring, a blue tint. can this be overcome by shooting with RGB filters?
and finally, are narrow band filters useless for galaxies? i assume that due to the redshift, more distant galaxies will have their light filtered out with these, but are they appropriate for closer Messier, Caldwell and NGC objects?