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Old 24-04-2015, 11:54 PM
Legoman (Leon)
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Legoman is offline
 
Join Date: Apr 2015
Location: Perth Australia
Posts: 2
Celestron 9.25 standard w FF, vs Edgehd 800

Hello there cool people,
Eventually looking to purchase an OTA both for imaging and observing, using up to a 36mm sensor (in theory on occasion I will have opportunity to use a larger medium format sensor, but as I understand it the edgehd's still only have a 42mm circle).
My question is the differences and qualities between a Celestron 9.25 with field flattener/focal reducer and an edgehd 800.
Points of interest;
Focal Length
Frame size
Flatness of frame, and sharpness
General differences of either setup
Thank you
-Leon

Ps, If there is already a similar thread anywhere on the fine interwebs, I shall happily accept a link and go off reading. (:

Ps again, as this is my first post, Me.. I am a student from Perth studying photography with a keen interest in general science, physics primarily, as well as thoroughly enjoying all that is above our heads. Up until now I've only ever imaged 'space' with a static tripod and various lenses up to 800mm with 2x teleconverter. I am hopefully in the process of purchasing a CGEM (tomorrow )... the eventual plan when my student income allows is to add an OTA.
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