Taken the plunge on this scope in the guise of astronz.
claimed to be dielectric coatings.
Looks very nice out of the box.
I see a post where its alleged these scopes are only really 186mm!
My example has an f-3 primary 440mm approx between secondary and the primary Secondary baffle is 68mm or 33.5 % obstruction.
The front baffle is 203mm.Everything appears right for a 203mm f12 Cassegrain with a 54mm secondary size needed.
So this example won't be 186mm unless primary baffle vignettes. Will startest when we get a clear night.
I sold a very good sw180 to buy this scope will be interesting to see if its as good or better on planets as the sw180.
I expect faster cooldown. Obstruction slightly bigger in the cass 33.5 v 30% but 2cm more aperture 20cm v 18cm.
Edited by Stopforths, 06 July 2020 - 10:51 PM.