Hi Stefan,
Just wondering if you could comment on how you think your design compares to other CDKs of same aperture? I note yours has faster f ratio than these two:
http://www.hubbleoptics.com/cdk.html#_
http://agoptical.com/10-imaging-dall-kirkham/
Also, What’s the central obstruction %?
Thanks.
[QUOTE=Stefan Buda;1416138]Aperture 250mm
Focal Length 1450mm
f:5.8
Fully Corrected Flat Field Diameter 42mm
Back Focal Length (From Field Rotator to Focal Plane) 133mm
OTA Diameter 299mm
OTA Length (without Field Rotator) 496mm
OTA Weight (including Rails, Field Rotator, Dovetail Plate and Adaptors) 10Kg