The Stellarvue CA006 is a digiscoping adapter for 1.25" eyepieces that have a diameter of 28 mm to 45 mm. Attach your camera to the adjustable base, and move it up, down, or side to side to line it up perfectly with an eyepiece inserted in your telescope or spotting scope. The eyepiece is held into position with a sleeve that is also adjustable...just turn the threaded bolt handle to move the top of the sleeve slowly downward until it secures against the eyepiece itself to hold it steady.
The Stellarvue Universal Digiscoping Adapter is also capable of attaching to a separate tripod or other platform via a small mounting foot with a 1/4-20 threaded hole. While many people do not use this feature, its nice to have for heavier cameras, etc.