[Peter Ward]

Originally Posted by multiweb

I use a QHY8 cooled CCD 6MP on a Celestron Nexstar SLT 130. Here's my current attempt to date (just a bit over 4h from Liverpool) still noisy though.

http://www.multiweb.com.au/astro/ic4...81222_ha_f.jpg

Excuse my ignorance Marc...but is it a colour or mono chip? . (their web site indicates it is colour....in which case the result you are getting would be normal, as very few pixels are gathering h-alpha light)