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Achernar
Postmaster
Reged: 02/25/06
Posts: 5211
Loc: Mobile, Alabama, USA
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Re: Some success with the H-beta filter
10/30/09 05:47 PM
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I've used my Hydrogen beta filter successfully on the Horsehead, California and Cocoon nebulas. It also worked on the Orion nebula too. I've tried it on IC-405, but the views I got through an O-III looked a lot better to me. As for the Horsehead, it did look like an irregular bite out of IC-434, but I did see hints of the horse head. Through an 18-inch, there was no doubt that I was seeing a perfect outline of a horse's head.
Taras
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15-inch F/4.5 Dob under construction
10-inch F/4.5 Discovery Dob
6-inch F/8 Homebuilt Dob
4 1/4-inch F/4 Homebuilt reflector
A whole bunch of eyepieces, filters and other accessories....
One curious cat
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