Ran across another review of WO flt 110's that weren't up to scratch, but the review suggested improper lens spacing was responsible for the SA; so if anyone had a poorly performing sample there might be an relatively easy fix.
" After explaining the problems with William Optics, I was told that I would receive a new and proper OTA that would be inspected. We finally got the second unit in for testing and inspected it. The first thing I checked for was the dust inside and once again, it was caked with it, just like the first one but in various other parts of the glass inside. I'll post pictures of this one too. The new 2” to 1.25” adapter fit better though and the focuser was adjusted properly but then came the worst. We set the scope out to cool for two full hours and once again, it had a severe amount of under-correction, so much in fact, that the images were very soft at higher magnifications of around 180x to 200x and I could see that nasty glow around Saturn again. At this point, it was like bringing
a pocket knife to a gun fight when comparing it to the FLT110-TEC. It’s quite possible that the spacing of the optics was the culprit. I brought this issue up with William Yang in New York at the North Eastern Astronomical Forum, better known as NEAF. He explained that improper spacing of the elements was most likely the cause."
Source:
http://www.cloudynights.com/ubbthrea...fpart/all/vc/1
