I own a 10" Dob and I have recently bought Astronomik's UHC, OIII and H-Beta filters. I've tried the UHC and OIII on M42 and Eta Carinae and the contrast gain is MASSIVE, especially with the OIII. A good first impression.
Now if the moon would just kindly bugger off.
Quote:
Originally Posted by ngcles
In a 46cm 'scope, the improvement on the horsehead has to be seen to be believed.
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I can back you up on that....