Quote:
Originally Posted by cometcatcher
Narrow band imaging uses very sharp bandpass filters to isolate various nebula emissions like Ha, SII and OIII. They are similar to nebula filters but isolate one passband at a time.
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I see. Surely that is no good with an unmodified DSLR then ? Dedicated camera and filter wheel is the way to go for that ?
I am assuming then that you stack the various bands together ? Do you have to take as many subs for each band or is your total integration split between the various filters ?