The JMI Telescopes Piggyback Camera Mount allows you to attach any camera to the outside of your telescope. This can be done with altazimuth-mount scopes for shorter exposures of up to about 7 minutes, but for sharp pictures free of star drift that go beyond that time you'll need a properly aligned equatorial-mount telescope.
This version wraps around the optical tube assembly and works with Celestron's NexStar 4, 4GT, and 4SE series telescopes.
In the Box
JMI Telescopes Piggyback Bracket for the Celestron NexStar 4 Series Telescopes