There was an 8 inch for sale on Astromart recently. Not sure if it sold, its no longer there. He wanted US$6500 firm.
You could have quizzed him on these points of focuser slop, is it the latest focuser or the JMI, does he get flexure in the scope (it was also the primary mirror holder only being 3 points and the latest I think has 9), does he have the latest thin double spider (otherwise they were getting too much of squarish stars, sometimes a bit unavoidable in that style scope).
He could send images he had taken and not 5 minute ones like a guy sent me once on a 12inch and when I queried him about it he suddenly had some other sucker I mean customer wanting it- you want 10 -15 minutes as flexure may not show up enough in a 5 minute shot. Flexure from the spider, the primary mirror and slop in the focuser plus the keller correctors were not fixed tightly enough were the problems I am aware of. Mike's also had pinched optics on top of that!
But there are good ones out there.
Greg.
|