[digital_astro] 1.25" visual back to 2" visual back

From: bretm151 (mckee_at_antispamdomain.not)
Date: Wed Nov 26 2003 - 19:03:13 EST


Greetings:

I have a Celestron 5" SCT with a 1.25" visual back. If I take it
off, the tube that goes forward isn't much more than 1.25"s.

 
I would like to use one of the 2" "digital camera" eyepieces
(Williams, Scopetronics) with my CP 5700 but to do that I would need
to get a 2" visual back. Unfortunatly, I'm doubting that they will
do me any good since the entry to the eyepiece isn't 2".

But...

I have a picture in my head (and there lies the danger :-) that the
light is focused into the eyepiece and it might not need to be full
width in front of the eyepice.

If someone who knows more about telescopes than I do could comment I
would really appreciate it...

Bret

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