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[ATM] Triplet

Hi,

I dont think making an oiled triplet is that hard. I've made a 190mm
achromat and it turned out just fine. Making an oiled spaced triplet
need only two figured surfaces, the other four
need not to be polished to perfection. I enjoy difficulty in my projects.

Richard thanks for the design, but is S-FPL51 not a high cost glass
(something like 8x the price of BK7). Do you have any other
suggestions. Also has anyone made an oiled triplet that could give me
the design they used?

Thank you,

Alfredo
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