This is a handmatched by John Hopper 150mm f/8 Celestron (Synta) refractor with Chromacor N (the most versatile chromacor). The chromacor virtually eliminates the false colors associated with these scopes. It threads into the end of a 2" diagonal and the assembly is placed in the focuser drawtube. This also has a Burgess Optical 2" Model A focuser (very nice crayford style focuser) with a collimatable adapter plate so achieving excellent collimation is simple. Also includes tube rings, CG5 dovetail, Losmandy DUP so it will fit on a G11 easily, 9x50 Celestron finder, a couple spacing rings to fine tune color correction on the chromacor. Total cost for all this was:
$1350 OTA and Chromacor
$250 focuser and adapter
$70 Losmandy DUP
Will sell for $1250 shipped in US.
One more thing to think about, this was handmatched for the best spherical correction with the chromacor and if it matched up best with a N (no additional correction) chromacor that means the lens by itself is excellent.