So this is actually an HDR pano of the moon shot with a Canon 550D through a Meade LX90 8" telescope. It has a fixed F-stop of F10. The equivalent DSLR lense would be right around 2300mm. It was taken just before sunset.
6 shots total:
HDR through Photomatix Pro 3
Stitched in Photoshop CS5 (5 years and 2374 days ago)