Quote:
Originally Posted by Slawomir
Hi Greg,
Going purely from the specs provided by manufacturers, the TS 86mm has the largest corrected circle and is likely to be the strongest performer out of the three scopes that you listed. I also think that feedback on the web gives an idea how consistently good TS scopes are in general.
There is one more potential candidate - FSQ 85. Going from spot diagrams it has significantly sharper lens on axis and up to about 15mm off-axis (30mm imaging circle) than TS 86mm, but then the 86 has smaller spot size all the way up to 36mm off axis (72mm circle!). So if you are planning to use this scope for wide fields with KAF-16803, then perhaps the TS 86mm is a more suitable option.
I have not used either of the scopes so all of the above is just some theoretical waffle...  |
FSQ85 has a variable reputation on the net. Even a casual research had it go from junk to amazing.
Tak needs to up its quality control on that one. Perhaps they already have.
One guy on Cloudy Nights had 2 and both were defective.
For the money it needs to be spot on.
FSQ106ED had its share of focuser issues which as far as I know are now sorted but there were endless "my focuser is flexing" type posts at one stage several years ago. Hence the 4 iterations of that model.
I still want to get a CFF later on but they are quite expensive and there is a wait list.
Greg.