Thread: horsehead nebula filter
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Old 24-09-2010, 06:22 PM
astro744
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astro744 is offline 		 
Join Date: Apr 2007
Posts: 1,244
H Beta filter. Lumicon make one but there are others. See http://www.lumicon.com/astronomy-acc...d=1&cn=Filters

You can get Astronomik locally from Bintel.
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