Could anyone please give me advice on my final thoughts which have changed a couple of times so far on my quest for a new scope. I am looking at the Williams Optics Megrez 110 ED APO f/5.9 over the Orion and Skywatcher 120mmED. Both are doublets however the W/O has a faster f ratio compare with f/7.5 for the others. I have heard W/o quality is excellent and the focusers with 10:1 are good. For $1800 from Andrews it is the OTA only and will be used for mainly astrophotography.
Thanks
Mark