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Curved Vane Spider

Started by Bob Chester, 07/24/2002 10:25PM
Posted 07/24/2002 10:25PM Opening Post
Is anyone making a 180* curved vane spider as described in ATM Journal issue #11? Novak makes a curved spider but it doesn't curve the full 180*. Any sourses or ideas?

Fujinon 10x70 FMT-SX binocs
Tak FS-78 ƒ/8.1 - 630mm fl.
6" ƒ/6.5 homeground newt. - 981mm fl.
10" ƒ/4.85 homeground dob. - 1231mm fl.



Posted 08/01/2002 11:04AM #1
What kind of diffraction pattern can one expect to see with a curved vane?