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Jeff Young
Post Laureate
Reged: 08/04/05
Posts: 3055
Loc: Ireland
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Re: Baader Mark V and fast Newtonians
06/21/08 06:35 PM
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I found the calculation of all the factors to be a nightmare and also ended up experimenting. I use the MkVs in very different conditions than Wargentin, but this thread might still be a useful place to collect the results.
In my f/10 MCT I use the MkV bino head with the T2 diagonal. The 1.7X glasspath compensator is inserted into the bino side of the T2 diagonal housing. This gives me exactly 1.7X.
In my f/6.8 refractor I use the MkV bino head with the T2 diagonal and 1.7X glasspath compensator in the same position. With the Astro-Physics BARCON element threaded into the objective side of the T2 housing I get 2.8X. With the AP BARCON element threaded into the 2" nosepiece (which is in turn threaded into the T2 housing) I get 3.2X. With the 2" nosepiece inserted into the assembled BARCON (complete with tube), I get 4X.
-- Jeff.
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Nikon 18x70s / UA Millennium Colorado:
Solarscope SF70 / TV Pronto / AP400QMD Coronado SolarMax40 DS / Bogen 055+3130
APM MC1610 / Tak FC-100 / AP1200GTO Tak Mewlon 250 / AP600EGTO
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