There is no "bright part" of the Horse Head. I have never been so lucky. Sig On Wed, Feb 22, 2012 at 12:51 PM, Brent Watson <brentjwatson@yahoo.com>wrote:
The only time I can claim to have seen the North American nebula was through an Edmund Astroscan - 4-1/4 inch bowling ball. I have seen the bright part of the Horse Head through my 12.5 inch at a star party in southern Ut. Through the 22 inch I actually have seen the indent of the dark nebula against the bright portion, but it was just an indent - a sort of semicircular indentation along one side of the nebula. Again that observation was made in southern T. I don't recall any filtration, although it may have been through a deep sky filter. I am pretty sure the 12.5 inch observation was without any filter in place. _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy
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-- Siegfried