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Old 06-12-2009, 08:39 AM
gavinadams (Gavin)
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gavinadams is offline
 
Join Date: Nov 2009
Location: Sydney, Australia
Posts: 6
Question How do I calculate magnification with a t-adapter

Hi All,
I have a celestron Nexstar 6SE.
This has a focal length of 1500mm and the standard eyepiece is 25mm.
So 1500mm divided by 25mm gives a magnification of 60x.

So I have my t-ring for my nikon d70 and a 32mm camera projection eyepiece. Which is fine and easy to calculate the magnification for that.
(approx 47x)

I'm considering the celestron t-adapter (#93633-A).
There seems to be no specs as to the focal length of this unit. As it contains no optics, maybe it has no focal length?

And from basic maths 1500mm divided by zero is zero, so that can't be right.

So the question is when I mount my d70 onto the back of 6SE with a t-apater what magnification should I get?

Cheers,
Gavin
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