thanks chris, sounds neat. keep us updated with how you go.
Quote:
Originally Posted by Omaroo
Given comparative mirror surface areas, you will obviously still gather more light from a single 24" over a dual 12", (452 sq. in vs 225 sq. in) so resolving power, perse, is still superior using a larger mirror (not that two 12" mirrors should be considered "small"). Even though more light is hitting your EP, images still appear as a flat object. The binocular projects a seemingly 3-dimensional image onto a viewing plane several inches in front of your face. I mentioned to Mark that through his friends' scope I visualise globular clusters now in a multi-dimensional vista, where individual stars almost look "spherical". You have a perception of "depth" that you've never seen until you look through one. It's quite incredible.
A 24" dob requires a substantial platform from which to view objects at or near zenith. I'm not in favour of ladders in the dark. The bino system, at f/5 means that at zenith your eyepieces are about natural eye-height from the ground. Viewing is just sooooo comfortable because you look down into the unit - rather than crane your neck skywards.
The other thing: I'd find it much easier with a dual 12" setup to lug around in a car than a 24"......
If you want to see a great bino website go here: http://www.binoscope.co.nz - it's a ripper site.
Cheers
Chris |