Long exposure astrophotography hasn"t been as easy or affordable as it is with the Zhumell 50mm Guide Scope. Now you can get involved in taking astronomical photographs without the need of a laptop or spending a fortune on an APO guide scope. All you need is a 1.25-inch CCD autoguider, your camera, and a clear sky to capture the amazing images you"ve always dreamed of. The variable dovetail bracket allows for quick and easy adjustments, so you don"t miss any action. Attaching this guide scope to your telescope with the mount base is just as easy, even if it doesn"t already have an existing dovetail bracket - or if it is currently being employed by your finder scope. The 50mm aperture and 162mm focal length (f/3.2) makes for a compact and lightweight addition to your current arrangement, weighing only 16 ounces. The parfocal ring allows for less focusing, however, the front focus ring and locking collar provides you the option. It"s time to start documenting all of your deep space explorations. * Compact guide scope for CCD autoguiders * 50mm aperture with 162mm focal length (f/3.2) * Adjustable dovetail bracket; includes mount base * 1.25-inch aluminum parfocal ring * Dimensions: 7L x 5W x 2.5H inches