mint_mark

Hmmm... I wonder if this would be better than the WO flattener III with my megrez 72. The flattener III is OK I suppose... you can vary the shape of corner stars by adjusting the focus, but "round" isn't one of the options

I still don't understand how the quikfinder works. The further I go from it, the larger the ring gets, so it always covers the same amount of sky.

I guess it's done by magical pixie dust again.

Good question. I discussed it with a friend and we came to the conclusion that the circles are projected up onto the window from below in a diverging beam of light. They reflect off the angled window towards your eye, but they are still diverging... so the further back you are the further apart the rays are and the larger the circles look.

If the circles were a constant size then the finder would only work (cover 2 degrees) at a fixed distance from your eye.