Plans for reflector with 2 primaries

[Roger Davis]

This is akin to an Herschellian telescope.
You cannot use two parabolic mirrors to produce a single image as the meridional (imaging) planes are not coincident. You have to produce two off-axis parabaloids to make both meridional planes coincident.
If you are making a mirror and you take a big chip out of one side, save it and make an unobstructed Herschellian!

[Stevo69]

Without going too off track (an apologies if this appears elsewhere in IIS), but what about this pair of bino viewers. Your next project Mark?

http://www.astro.virginia.edu/class/oconnell/LBT/

[GrahamL]

gotta love the 80's mark kombis and lots of hair .

[Paddy (Patrick)]

Thanks for all the input and some great links. Using the 2 diagonals as opposed to a binoviewer looks very interesting. Don't mind the idea of the 8.4 metre primaries, but the total scope might be a little tricky to get through the shed door on a trolley.

[Satchmo]

Dave Moorehouse's 8" F6 bino was a simple build with 2X GSO 8" F6 Mirrors...

http://www.binoscope.co.nz/babybino.htm

[South Poll]

Why stop at 2 primary mirrors ??????


...or how about these for binos ! ??....


I know, these pics will have been seen before.....but ya can never get enough of stuff this cool

[Ian Robinson]

Originally Posted by South Poll

Why stop at 2 primary mirrors ??????


...or how about these for binos ! ??....


I know, these pics will have been seen before.....but ya can never get enough of stuff this cool

I bags the left one .... (the missile tracking double telescope thing).