[Atmswap] Christian (Astrophysics) 6" apo lens.

[David Harbour]

I have a 6" Roland Christian designed and manufactered f/12 apochromatic
contact triplet objective mounted in robust, finely machined black anodized
cell. This lens is the most highly corrected optic to ever pass through my
hands and delivered performance equal to theory for its size. For more
detailed comments about its performance when I had it in a mount and was
using it, inquire at:

scarab2@cox.net

I am asking for best offer over $2,200, but realize that "all prices are
negotiable".

The performance of this lens is nothing short of awesome.

David