Celestron SLR (35mm OR Digital) Camera Adapter

The Celeston SLR (35mm OR Digital) Camera Adapter for the NexStar 4, C90 & C130 Spotting Scopes is metal.

if you are asking if a lens will work in this the answer is no. you need to buy an additional adapter.

Yes it works fine. Make sure the threads are snug and use the live view on your camera to focus the frame and use a shudder release cable. Good luck and shot!!

I have a very old Celestron C90 (over 20 years) it drove me crazy trying to put this on my telescope until I realized the threads were different. Like your Nexstar my C90 has the lens mount centered in the back of the scope, if there is an externally threaded pipe you're probably in business. Yes the front end of the device has a collar that extends and threads over the pipe. The other end attaches to a specific camera mount e.g. Sony A, Canon EF, etc. I think its easiest to attach the ring to the adapter (I leave them together all of the time) then to the telescope and lastly mount the camera to the mount like the whole Nexstar is a giant camera lens. I can't guarantee anything but your setup looks like mine and that's the way it works. BTW I've gotten some really nice results using a device that holds your camera lens over your telescope lens. It actually works well, but you have to spend a lot of time lining things up. There is also a similar mount for smartphones using their cameras. Remember that the moon is brighter than you think it is. I use shutter preferred mode with my Canon for lunar photography. Lastly some people run short movie clips of stellar events and then process them through stacker software for great results some times (a collection of stills can do the same.)