From: Garth Arsenault 
To: atm{at}shore.net
Reply-To: Garth Arsenault 


Hi list,

I have just finished figuring my 10" BVC mirror (what an ordeal!) I
ended up doing my figuring with a full sized lap and it only took about 25
figuring sessions (groan) to get my figure. I am anxious to star test to
verify if the 1/25 wave error is accurate from my foucault test. I have the
rest of my truss style dob almost complete. What is the best material to
fasten the secondary mirror to the diagonal wooden dowel. Should I use
silicone, epoxy or another adhesive?

Also, To date I have only a 25mm eyepiece, will this be sufficient to do my
star test or do I need to have more power than this will give me? My mirror
has a focal length of 57.5 inches which will give me about 60X mag.

Thanks

Garth

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