Step 17: How does it perform?
This refractor is an achromat which normally would not be suitable for photography. Due to it's large focal ratio (f15) and long focal length(2276mm) this scope is a superb planetary performer. This is a photo of Saturn taken with a Celestron Neximager, a webcam-based imaging camera. This photo is a stack of 1000 frames in Registax. There is a white blob which is a storm imaged on the surface of Saturn from 3 blocks outside of Chicago!