Skywatcher guide-scope bracket
The Skywatcher guide-scope bracket allows you to and quickly and easily attach a guide-scope to your main telescope. You no longer need guide-scope tube rings, but simply this compact bracket. Attached via an ordinary photo screw or a 1/4" piggyback adapter, it let you get started doing astrophotography right away - the GP receiver is especially suitable for taking smaller and shorter focal length refractors with a standard prism rail. Two screws let you adjust your telescope at elevation and azimuth and quickly locate an appropriate guide star.
Long guide scopes tubes have fallen out of favour in recent years. The modern autoguider does not require a long focal length. Small, compact ED apos, which simplify the location of a guide star with their wide fields of view, have proven themselves. Unfortunately, their short OTAs are often a poor fit in classical guide scope rings.
For small guiding chips, adjustment using guide scope rings is usually insufficiently sensitive.
One response to this problem is the tangential clamp. A tangential clamp can be infinitely adjusted over a tangential angle of several degrees and so can always find a sufficiently bright guide star.
For scopes of up to 60mm, we recommend the Skywatcher clamp
For scopes of up to 80mm, we recommend the Geoptik GK2 clamp
As a guide scope, we can recommend the inexpensive Omegon AP 66/400 ED refractor which can also be used on a suitable standard rail.
The tangential clamp can also be used as a piggy-back adapter for the tracking with telephoto lenses. For this, you will need