Guys, I'm interested in which filter would work best to cut out sky pollution glow for Canon 400D DSLR astro-photography of nebulae (generally planetary - like Eagle, Triffid or Helix)?
Living in light polluted North Ryde I was wondering if my next purchase should be a sky glow filter. I was pondering which one to attach to the connect for the Canon EOS.
I was guessing the 2" (to fit the Canon connector tube) Baader UHC-S Nebula filter that MyAstroShop sell for around $195. Can anyone please give advice or opinions?
http://www.myastroshop.com.au/produc...asp?id=MAS-127
At present my say 4 minute shots have noticeable city glow (using Lumicon OAG with a inbuilt focal reducer). Go out to 8 - 12 minute shots and the city glow washes out the fainter signal. The sweet spot at present is about 6 minutes - see triffid below (after a bit of photoshop level,s curves and Gaussian blur on the Neb itself) - so it makes fainter ones like the Helix really hard to grab.
Many thanks,
Matthew