Eyepiece and telescope pairing
Connecting a camera to the Sky-Watcher Evostar 72ED
The exact thread or barrel that lets a camera reach prime focus on the Sky-Watcher Evostar 72ED, and the adapter that makes it work.
- Telescope interface
- 2 in focuser (no rear-cell thread); a T-adapter noses into the focuser
- Adapter needed
- a 2 in prime-focus (nosepiece) T-adapter, plus a camera-brand T-ring
- Camera-side thread
- T-thread (M42 x 0.75), via a camera-brand T-ring
- Prime-focus focal length
- 420 mm (f/5.8)
Reaches a camera through the focuser, with a caveat. The Sky-Watcher Evostar 72ED takes a 2 in nosepiece T-adapter and a T-ring in its focuser, but many Newtonian focusers lack the in-travel to bring a camera sensor to focus, so a low-profile focuser or a short extension may be needed.
A camera reaches a telescope's prime focus through a T-adapter that matches the telescope's interface on one side and the standard T-thread, M42 x 0.75, on the other. A camera-brand T-ring then bayonets to the body.
Unlike a Schmidt-Cassegrain, this design has no threaded rear cell, so the camera mounts through the focuser drawtube. Check that the focuser has enough inward travel to reach focus with the mirror or sensor where a camera sits.
The adapter to buy
Shop a 2 in prime-focus (nosepiece) T-adapter on AmazonaffiliateFind a 2 in prime-focus (nosepiece) T-adapter on eBayaffiliateShop Camera-brand T-ring (M42 x 0.75) on AmazonaffiliateFind Camera-brand T-ring (M42 x 0.75) on eBayaffiliate