Is 2deg tfov really necessary?

[MooEy]

hehe, i tot u already have a nice 10" dob. when u going to play with it, do invite me down.

also, the r200ss would fit into the pelican 1650 case. that case is roughly the size of a large suitcase, might make it thru the gates.

~MooEy~

[elton]

Mooey, the eyepiece barrels have a thickness. This will reduce the internal diameter a bit. I think there has to be a limit to focal reducing and 2 deg TFOV on the C8 is probably not attainable without vignetting.

You might find the following article useful.
http://www.cloudynights.net/eyepieces2/panoptic.htm