Optical Theory Archives
Discovery vs. Zambuto Optical Shoot-out
Nov 25 2011 10:44 AM |
Tim Neubert
in Optical Theory
For this comparison we conclude that Carl Zambuto's seven criteria must be providing the extra contrast that was observed at the eyepiece.
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Tim Neubert
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Stray Light Control in Newtonian Telescopes
Dec 08 2009 07:46 AM |
MitchAlsup
in Optical Theory
Control of stray light is very important in telescope design and construction. This article looks at many of the issues involved
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Mitch Aslup
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Fraunhofer Diffraction and It's Effects on Aperture Masks - A Primer
Sep 01 2009 07:15 AM |
Chris Lord
in Optical Theory
The Fraunhofer diffraction pattern produced by any particular aperture or obstruction placed across that aperture can be modelled using a Fourier Transformation
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Chris Lord
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Aperture Comparision
May 16 2009 05:24 AM |
Guest
in Optical Theory
Curious about how different designs compare as per aperture? Forum member Jared Willson shares his thoughts...
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Jared Willson
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Diffraction Limted Optics
Jul 19 2006 09:12 AM |
Cary
in Optical Theory
I continually see statements of “diffraction limited optics” in the industry and this generates an astounding amount of discussion to exactly what this is and what it means.
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Cary Chleborad
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Venus Phase Naked Eye Experiment
Mar 10 2006 03:09 AM |
Darren Drake
in Optical Theory
In the realm of naked eye astronomy it has always been considered one of the greatest challenges to view the crescent phase of Venus
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Darren Drake
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Telescopes and Resolution
Jan 25 2006 01:54 AM |
Darren Drake
in Optical Theory
I have been an amateur astronomer for about 30 years and have owned many telescopes
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Darren Drake
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Eyepiece Qualities and Aberrations
Jan 09 2006 02:19 AM |
Starman1
in Optical Theory
In today's eyepiece market, there is a lot of confusion about eyepiece characteristics and problems.
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Don Pensack
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Diagonals; Prisms vs. Mirrors
Mar 12 2005 11:44 AM |
Guest
in Optical Theory
Neither mirror nor prism are better. If you notice, every manufacturer of quality scopes with fast focal ratios uses mirror diagonals. Every manufacturer that sells quality scopes with long focal ratios sells prism diagonals. It’s not an accident. You get the diagonal that matches the scope.
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Gary Hand
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