Review: Inexpensive Solomark 50mm Guide Scopes (same as Orion, Starguider, TS etc)

December 18, 2016 // by ecuador

A popular guiding solution is the 50mm guide scope, often by converting an existing 9×50 finder scope. It has the advantage that it is light, it can fit on your existing finder shoe, it is very fast giving you many stars at low exposures and it can be quite effective at short and medium focal lengths. […]