Why no mirror telephotos for DSLR Canon?

Started Jan 25, 2010 | Discussions thread
Lee Jay
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Re: Question about telescope
In reply to gdjoslin, Jan 29, 2010

gdjoslin wrote:

Can I put a T mount on this scope to take pictures are not.
It is a NexStar 114 GT Computerized Telescope.

I sort of doubt you can get an SLR mounted to that without modifications. I had a Nexstar 130SLT for a while, and it couldn't do it without a barlow or without moving the main mirror forward. The problem is that these little Newtonians don't have enough back focus for an SLR at prime focus to reach focus (you can't move the camera "in" far enough.

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