This quick release finder bracket was originally developed by Astro-Physics to be used with their original 8 x 50 finder (discontinued) . However, this bracket can be used with any finder that has a body that is at least 2 7/8" (73 mm) long and with an outside diameter of between 1 7/8" (48 mm) and 2 1/4" (57 mm), allowing it to fit into this bracket with enough room left over for adjustment. This versatile bracket can be mounted in several ways:
Attach to a Base for Quick Release Finder Bracket (QRBASE, QRBASES-A or QRBASEG) mounted to the predrilled holes on your AP refractor
Attach to a 7” sliding bar (SB0800) to be used on the Traveler Accessory Plate (ACPLTR) or an 8" Dovetail Plate (DOVE08)
Attach to the Losmandy D Series Dovetail adapter (LMDVA) on the 12" Dovetail for Losmandy D Series Style plates (SBD12) or any Losmandy D Series plate
The bracket assembly includes the bracket ring, alignment screws, and male dovetail base. This product originally was packaged with a female dovetail base for mounting on your refractor (QRBASE, see below) . However, due to the introduction of the smaller radius base, you must now specify which base you need, either QRBASE, QRBASES-A or QRBASEG and order them separately.
This assembly, with your finderscope, slips into the groove of the base and tightens quickly with two thumbscrews. Now you are ready to go. There are no mounting screws to get lost in the grass or snow and your fingers won't freeze as you struggle with tools. This accessory is a must!
You may want to consider purchasing extra bases that you can mount permanently on your other telescopes. This will allow you to use the same bracket and finder interchangeably. Now you can attach and detach your finder in seconds while retaining the alignment.