[MortonH]

I'm considering a finderscope for my 70mm and 90mm refractors. Am tossing up between the GSO multi-target RDF and a 50mm optical finder.

While the 50mm is probably overkill for these scopes, my experience of unit power RDFs is limited to a Televue Starbeam a few years back, and I wasn't particularly impressed. I always felt that the position of the red dot was rather vague due to head movement/parallax, since there is no eyepiece to align your eye with. It didn't seem a whole lot more accurate than sighting along the tube of the telescope, then using a low power eyepiece. And of course the Televue is expensive.

Would anyone using a GSO RDF care to share their experiences on the issue of 'accuracy'? Since they're about the same price as an optical finder, it seems like the optical finder would be the way to go, but on my 70mm scope it may cause balance issues since I'm just using a camera tripod.

Comments welcomed.

Regards

Morton