on 3/3/01 11:47 AM, chris1011@... at chris1011@... wrote: Roland, TMB sells a 175 f6 for $11,990.00 and a 180 /1400 (not sure anout the f ratio) for the same price. Mark

on 3/3/01 9:56 AM, Rich N. at rnapo@... wrote: As an owner of a TMB 105/650 and hopefully soon to be owner of an AP 155, I must agree with you regarding the finish of the AP mechanical parts as

Hi Rich, Agreed. The AP products are works of art as well as research grade instruments. They also represent the best trade off in weight vs. strength. - Besides, Tom Back doesn't even have an

Hi Larry, The price for a used AP 7/7 is hard to believe. I'm not sure why someone would pay the price someone mentioned recently. However, the finish and design of the machanical parts of the APs

colt@... writes: Long or short? F8 is do-able. Would this be for CCD? Roland Christen > >

No disrespect intended, for I am a big fan of A-P, but with a TM Back 7" f/8 apo selling for $12K and the 8" f/8 selling for about 20K (I think?), I can't understand why people will pay the prices

colt@... writes: How do I make an unobstructed mirror design? Roland Christen

jeffball@... writes: I'm still leaning toward mirror based scopes for imaging vs. larger refractors. Mirror scopes are easier to make in large sizes and will be smaller and lighter. I

Marj says I should have my head examined. Roland Christen

writes: Probably similar, if it's done right. So should AP forget about 4", 5" and 6" scopes and concentrate on larger instruments? Roland Christen Roland Christen

colt@... writes: I don't know about that. Why is everyone tripping over themselves to buy a cheap Chinese achromat? Anyway, the market for high priced refractors may vanish if the stock

writes: I guess it would be easier to make, but then the imagers would not be pleased. Roland

kldenmark@... writes: What would be a good retail price for a 7"F7 with 4" focuser etc? Roland Christen

If you like that how about the last AP206 on an AP 1200 QMD was $50k Herb

I dug out an even earlier price. October 1, 1986 price list; 4" F6 $695 Starfire 178mm F9 $3300. Joe Marietta wrote:

ztrmann@... writes: Ouch ouch ouch!! Roland Christen

Last one sold for $40k with AP 1200 GOTO. FYI. Herb

Thanks Marj, Lawrence, and John

The 180 f7 was $8,200 in 1995. I don't know what the market price would be. I can't think of any that have changed hands. There were only a few made. Marjorie Christen Astro-Physics, Inc. 11250

$4595 on 4/92. Joe Marietta wrote: