Re: [ATM] What is that Image size in Calculations

["Geogre Nikolidakis" <geoniko@otenet.gr>]

Hi again 
I would like to thank you for your answering to my questions.
You helped me to understand better that the decision about the secondary
size is a little bit complicated and needs more investigation.
But there is a point that I still can't understand. It is supposed that 
there is an optimum full illuminated image size about 0.5" as Mr. Mike
Lockwood mentioned.
Considering that one of my low power eyepiece is the 35 mm panoptic with a
field stop about 39 mm ~ 1.56", then illuminate the 0.5" that is about 33 %
of full field stop of the panoptic. 
Then what is the benefit using the 2" eyepiece than one of 1 1/4" ?

George Nikolidakis


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