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blackhaz
Carpal Tunnel
Reged: 05/20/06
Posts: 1598
Loc: Prague, Czech Republic
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Re: Using a Nightime H-Alpha filter for Solar view
04/18/08 10:11 AM
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Just wanted to add that the standard 7nm Baader H-Alpha deep sky filter does not even work as a Coronado's block filter. Too wide bandpass, no details are seen.
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Maxim Usatov,
Photos and Projects: http://www.bcsatellite.net/bao/
ČAS Solar Section
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