From: "Mel Bartels" 
To: 
Reply-To: "Mel Bartels" 


>>> - 10" primary mirror; f/6 f/5 or f/4?

I suggest f/6.  Collimation is much easier, mirror figuring is much easier,
and you will be able to use a wider range of eyepieces.  Only consider the
f/4 if tube length is a concern.

Mel Bartels

--- BBBS/NT v4.00 MP