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Old 22-03-2009, 08:47 PM
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AlexN
Tunnel Vision

AlexN is offline
 
Join Date: Mar 2008
Location: Brisbane, Australia
Posts: 6,708
Anyone used a Canon TE1.4x Converter for astro imaging with a telescope?

I've been wondering about this the past few days.. I've seen many examples of the TE1.4x extenders being used in conjunction with Canon L glass, and I've seen teleconverters being used for lunar shots through scopes...

I was considering a way to increase the imaging FL a little bit without vignetting the field too much..

The new GSO RC should be here early/mid next week, and Im waiting on word from Eric regarding a modded DSLR for "easy" colour imaging.. I was considering getting a TE1.4x extender to increase the focal length to 2270mm Although this would result in the scope being F/11 or there abouts, It would give me a nice field of view..

Just wondering if its been done? and if so, does it cause vignetting? I would imagine not, as generally speaking the longer the focal ratio, the less light falloff you tend to experience.. In any case.. Im open to suggestions, comments on this idea..

Alex.
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