|
I'm going to say that I prefer a straight-through finder any day. The way I slew to an object involves using both eyes open at the same time - where the eye looking through the finder sees only a narrow FOV, and the eye outside the finder sees the whole sky at 1:1. When you move the scope, you can see (in stereo-ish vision) the object you are looking for moving (say) left in the finder and to the right via the open eye. If the movement is divergent, you are moving the scope the wrong way. If it is convergent, the two will meet up and you know you're in position. This works wonderfully for brightish objects, and is actually quicker for me than using a telrad or red dot finder in some instances.
A right-angle finder restricts you to looking through the finder only, and does not allow you to simultaneously sight along the main scope at 1:1. Having the image the right way up is an advantage, but because of the diagonal you are still looking at an image that is reversed left-to-right, so what's the point?
Cheers
Chris
|