I have a Vixen VC200L Visac (1800 mm FL, f/9) that is only about 6 months old. I truly love this scope! But I was offered an unused AP155 at below market value and jumped at it. Now I need to pay for it. Vixen description is as follows: "The VISAC optical system is composed of a concave primary mirror, a convex secondary mirror and a three element field corrector. Especially noteworthy is its sharpness and flatness at the edge, which far exceeds that of Schmidt-Cassegrain systems of the same aperture. It provides a pinpoint star image less than 15 microns, even at the edge of its 42mm image circle." Scope comes with diagonal, 20mm Lanthanum, 7x50 finder scope, illuminated polar finder and GP-DX mount.
Sold new for $2275 (price has gone up since then). Will sell for $1875, shipping included (UPS ground, CONUS).
Thanks for looking,