TEC is taking orders for a 160 mm APO. But TEC's price structure is
now a bit odd:

APO 140 = $4,600 (F/7)
APO 160 = $12,000 (F/8)
APO 200 = $15,999 (F/9)

It takes an extra $7400 to go from 140mm to 160mm? Wow, that's a big
step for 20mm. And it seems that if you would spend that much for a
160 then you would go ahead and spend another $3,999 to get a 200
instead. Is that the idea?

But in a way it is an encouraging trend for high-end customers. Maybe
Yuri could make an APO 300 for, say, $18,000. : )

Jeff Marsh
(who wouldn't mind having an TEC140 someday...)