For NexStar 4 and for all C90 Spotting Scopes.
What is a T-Adapter? It is an adapter for you to attach your 35mm SLR camera to the prime focus of your telescope or spotting scope. Attach your camera and you can take terrestrial images or short exposure images of the moon and planets. You can use it to take long exposure deep-sky objects with an additional guidescope.
You will need a T-Adapter and a T-Ring are required to mount a 35mm SLR camera to your instrument.
Celestron was founded by Tom Johnson whose first telescope design was a simple 6-inch reflector, built for his young son. He gradually progressed to making larger scopes in more sophisticated designs. Today, the Celestron company is an industry leader in designing and manufacturing optical equipment including telescopes (computerised and non-computerised), binoculars, spotting scopes and its accompanying accessories. Celestron's legacy spans 50 years, and has grown to enjoy recognition from amateurs to serious astronomers globally. The company seeks to remain innovative by growing its product offerings, while supporting science education around the world.