Aluminium Alloy Material: Made of high strength Aluminum with Anodizing Aluminium Process; Precision machined solid aluminum finder shoe base in matte black; for almost all viewfinder holders; for the Witty 1 Tangent attachment
Easy To Install: Two large knurled thumbscrews makes it easy to install: Bases feature two large thumbscrew locks to secure your finder scope or reflex sight in place; even while wearing gloves; Just put it on the optical tube and tighten the screws
Multi Function: There are two elongated holes on this base and a single countersunk hole for screws up to M5 in the middle; Two screws are on the on side of base; The spacing between the two screws is 24 to 41 mm
Finding astronomical objects is particularly easy with the Alstar 9x50 finder scope; It provides both a bright image and comfortable viewing
This finder scope has a 50mm aperture and so provides a particularly bright image; Objects which you are not even able to see using just the naked eye will usually become directly visible; Also if you are trying to locate one of the brighter DSOs this will no longer be able to remain hidden giving itself up to your searching eye