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:

Can anyone tell me what the new cost of this scope was? How about the current open market price? thanks Joe

anyone have rings for the 155 they can sell me?

on 2/28/01 8:31 PM, Mark Jenkins at markj@... wrote: That should say "extended" Mark

Hi Mark, on 2/28/01 7:30 PM, markdambrosio@... at markdambrosio@... wrote: I have them all including a "rare" AP 5 inch slider bar. I also have the 15" Dovetail plate and slider. The

Hi Mark, What length Sliding Bar are you using with the Dove 8"? Possibly you could use a slightly longer Sliding Bar to rectify your balance woes. If memory serves me correct, the AP Traveler can