Is this wild idea possible? (bi-refractor)Posted By William Chang |
Well, on first glance it's a crazy idea, but then after a while the benefits begin to surface.
Both scopes are horizontal so won't have differential balance issues due to altitue etc. Altitude rotation can be either well-supported scope(s) or front mirror(s). The whole structure rotates on an azimuth table. Easier co-collimation mechanism than long, cantilevered OTA(s). To adjust IPD just use the built-in focuser(s). Fine-focus with a helical inserted into the back diagonal(s). Viewing height is constant, but viewing angle is not so good unless you added another diagonal. Availability and cost of large, high quality elliptical front mirror(s) limit aperture to 4" or less, unless you ground your own.
-- William
Both scopes are horizontal so won't have differential balance issues due to altitue etc. Altitude rotation can be either well-supported scope(s) or front mirror(s). The whole structure rotates on an azimuth table. Easier co-collimation mechanism than long, cantilevered OTA(s). To adjust IPD just use the built-in focuser(s). Fine-focus with a helical inserted into the back diagonal(s). Viewing height is constant, but viewing angle is not so good unless you added another diagonal. Availability and cost of large, high quality elliptical front mirror(s) limit aperture to 4" or less, unless you ground your own.
-- William