Marumi "Deep Sky" Filter?

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Marumi "Deep Sky" Filter?

Did Marumi ever make a "Deep Sky" filter for astrophotography? I see one being offered as "58mm Marumi Deep Sky Filter" in an online classified advertisment. No one I have talked to is familiar with it. Does anyone know about it and how it worked?

2007-02-04 04:47:13 · 1 answers · asked by Search first before you ask it 7 in Science & Mathematics ➔ Astronomy & Space

1 answers

websearch for "deep sky filter" specification yields:
http://www.company7.com/optec/graphics/filter_graphs/17266.gif

Which looks like an all-pass that blocks blue-green

see: http://www.starlightccd.com/prodserv/filters.php for more information.

2007-02-04 14:43:18 · answer #1 · answered by arbiter007 6 · 1⤊ 0⤋