For sale: Astro-Tech AT65EDQ quadruplet apo refractor with tube rings and 1.25" eyepiece adapter.
The AT65EDQ has a built-in field flattener (usable with full-frame DSLR cameras) and a generous 110 mm back-focus distance (148 mm from the shoulder of the focuser -
see here).
I'm selling because I want to buy extra bits for my RC8 instead (rotator/focuser).
$450 plus shipping