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Erik
Site Admin
Joined: 12 Feb 2008
Posts: 5848
Location: Off Grid in Paradise... Mag 7 skies
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 Posted: Mon Oct 19, 2009 12:54 pm Post subject: Wow! Need a fast triplet refractor? |
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Man, what a deal. Though I'm not sure how well it would work as a telescope. Check this out:
http://www.surplusshed.com/pages/item/l13001.html
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-Erik Wilcox
Homebuilt 16" Truss Dob
SV 80mm ED Nighthawk NG on M1 ALT/AZ
Nikon Prostaff 65mm spotter on Trekpod
Konusvue 20x80 binos/Peterson pipemount
Orion 10x50 binos
Homebuilt 80mm f/5 refractor
Mirador 60mm f/12 1960's refractor
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Kawx4d
JAFO
Joined: 04 Nov 2008
Posts: 1503
Location: Semper Transitus
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| Posted: Mon Oct 19, 2009 2:47 pm Post subject: Re: Wow! Need a fast triplet refractor? |
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That's insane! A 6" achro for $250, let alone at f/1.25. You've got to wonder about the off-axis performance especially for wide-field performance at low powers, but the TFOV would be so big it would still be a riot to pan around the Milky Way under dark skies. Take that 21mm Ethos and you've got 9x and a 10.8* True Field!  The 13 would be 15x and a 6.7* field, give or take since I don't have the field stop specs in front of me.
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Kerry
The hopey changey stuff blows, and it ain't workin'......
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Square_peg
galaxy
Joined: 16 Feb 2008
Posts: 1812
Location: Maple Valley, WA
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| Posted: Mon Oct 19, 2009 3:47 pm Post subject: |
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Maybe a good start to an astrograph.
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Tom (Pegster) |
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