Mars filter?
Started by Midnight Sun, 06/26/2003 06:05PM
Posted 06/26/2003 06:05PM
Opening Post
Posted 06/26/2003 07:34PM
#1
Repost from yesterday:
For Mars, I like a #21 orange, especially with 6" and smaller scopes because of higher light transmission. A darker #23 red is useful when more aperture is available. See Fred Price's Planetary Handbook and this excellent filter site:
http://sciastro.net/portia/advice/filters.htm
For Mars, I like a #21 orange, especially with 6" and smaller scopes because of higher light transmission. A darker #23 red is useful when more aperture is available. See Fred Price's Planetary Handbook and this excellent filter site:
http://sciastro.net/portia/advice/filters.htm
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