we are a not-for-profit institution who have been gifted a Celestron
CGE 1400 telescope by one of our trustees. We want to connect a good
camera that can stream the images to a TV set? What camera should we
consider buying?

The cheapest and simplest way would be to buy an electronic eyepiece
(e.g. Meade) and plug it directly into the TV.  I'm not sure that
would give you broadcast quality though, nor do I know whether it
would be able to display whatever you're interested in looking at. 
Could you give a bit more detail about what you'd like to do, please?

Ian G.

Dear Ian,

Thank you for your suggestion. We are setting up a virtual science
classroom for underprivileged children to help them understand science
better. Since Astronomy has high visual and aesthetic appeal we will
broadcast content on different aspects of astronomy. For example,
solar system, galaxies et al. We want live streaming of pictures from
the telescope to give the children an impression of "being there" if
you get the drift. Imagine our setup to be like a planetarium except
that the images will be real rather than simulated

Hydshishir

Hi Hydshishir

Good luck with your project - I've done observing sessions with
underpriviledged children and it's hugely rewarding!

The commercial systems I know of are intended to display an image from
the telescope on a television screen or PC - you plug the camera or
its control box into a TV and you're up and running!  They're not
designed for broadcasting though.  To set up what you've got in mind
there are a lot of technical and logistical questions that need to be
answered, and I'm not competent to do that!  Here are some links to
people who are:-

The Video Astrophotography E-mail Discussion Group -
http://www.fortunecity.com/victorian/canterbury/222/astrovid.htm
The QuickCam and Unconventional Imaging Astronomy Group -
http://www.cometdust.demon.co.uk/QCUIAG/

 Ian G.