Great. Actually from the photos it does look like that dew shield part is always stationary. Good to have this confirmed.
I will wait for your CR3 drop before I place my order. Thank you again for answering all these questions.
I am unable to find a good CR3. All the subs from the image above were taken unguided on the Az-GTi and hence have small tracking errors (only visible when you pixel peep) making it hard to evaluate the performance of the lens.
Let me take a sub on a better mount with good focus when the clouds clear up which can help you evaluate the lens better. Post #7 above is from a full frame with better tracking.