On Tue, 6 Mar 2007 12:44:25 +0000, in uk.sci.astronomy , Jim
wrote:

In article , Pete Lawrence wrote:

The third method, which is most common with DSLR cameras, is prime
focus coupling. Here you lose both the eyepiece and the camera's lens.
The path to the camera's chip is as pure as it gets - i.e. there's no
glass between it and the telescope's primary mirror. This is the route
you want to follow Jim.


How do you go about getting greater magnification in that situation?

You use a high-density CCD and enlarge the image photographically. You
can also use a Barlow.

Remember that the eyepiece spreads out the photons more, ideally for
photography you want to avoid that...
--
Mark McIntyre