Lens cost?

Thanks for the thoughts. It's an oiled triplet which has only 4
different spherical radii. The glasses are all standard -and as I read
glass prices, the glass is nothing compared to labor costs. The fact
that it's oiled means only 2 surfaces need high polish and coating.
Would that help you give me a better idea -at $50,000 I could never
afford it but the TMB 178 f/8 is $13,000 including tube etc.

You will still pay a lot of money for a 1-off lens. The glass prices that you
may have seen will be much much higher if you try to buy one set spec'd to the
high homogeneity that you will need for a successful lens. If you can get the
glass, why not try making one yourself? In the process you will have lots of
fun and it will be quite educational. It is not that hard to do, just very time
consuming.

Roland Christen

"Chris1011" wrote

If you can get the
glass, why not try making one yourself? In the process you will have lots
of
fun and it will be quite educational. It is not that hard to do, just very
time
consuming.

That's mean!!

(But funny as all get out!!!)

Actually, I was expecting more Richonomics on this one.

Chuck Taylor
Do you observe the moon?
Try http://groups.yahoo.com/group/lunar-observing/
And the Lunar Picture of the Day http://www.lpod.org/
************************************

Roland Christen