Hi Chris
Thanks for that, I appreciate the update.
FYI, here are the details that I entered into "
Astrophotography CAD" for my
Takahashi Mewlon 210 F11.5, should you folks want to update the OTA database.
To adjust collimation, this secondary assembly cover can be unscrewed to access the x3 collimation screws.
The diameter of this cover/cap is 70mm (obstruction) and it completely covers the secondary mirror assembly.
Cheers
Dennis