Canopus56 said: <In searching some catalogues and other net pictures, I don't see a reported surface brightness for this nebulae in integrated mag or surface brightness. Care to give an estimate?> I'm not really sure about an estimate, but I did identify a Mag 14.18 star and placed an image showing it at this link: http://tinyurl.com/foqam The star looks brighter than even the brightest areas of the nebulae, but I can't be sure. I would say it is probably Mag 15 or higher. <What's the filter factor on the Ha?> I am using a Schuler 15nm bandpass filter.... not a super narrow band. It passes approximately 90% of the Ha light but blocks nearly everything else. Cheers, Tyler