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DAVIDG
Carpal Tunnel
Reged: 12/02/04
Posts: 1538
Loc: Hockessin, De
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Re: The 'Best' telescope and eyepieces
07/05/08 01:13 PM
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There are four elements in a Schupmann including the star diagonal. To correct for atmospheric dispersion you very slightly tilt the field mirror while looking through the eyepiece which completely tunes out the color from the atmosphere. My newtonians show more color then my Schupmann.
- Dave
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Homemade 'scopes 8"f/7,6" f/5", 6"f/4, 4.25" Schief. 60mm Coronagraph,60mm H-alpha system, 4.25" White-light Solar Newtonian,solar spectroscope, 4.5" f/16 Schupmann Medial refractor, 14 Stellafane awards 7 in optics
Engineering = Taking what you have and making what you need.
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