Hello all
dont buy a 3nm OIII filter unless you are prepared to commit hours of exposure time - especially with just 5" of aperture!
This is a narrowband shot of NGC 7822 and the emission nebula Ced214 in Cepheus.
SHO pallete was used, and exposure time was 6:5:22 hours. First frame was 26 Aug, last was 16 Oct.
http://tinyurl.com/3y5ve4v
thanks for looking as always.
cheers
Martin