C11 main mirror travel

[bojan]

Anybody knows length of C11 mirror travel? Or, how much the mirror moves for one turn of the focus knob?
(I can have a look myself, but maybe this info is already there).


Thanks in advance!

[bojan]

Marc, thank you!
That is quite a lot...



I am thinking of modifying the focus mechanism, I do not like the current asimetric, off-axis side-pushing design (and associated mirror flop and tilt)

[multiweb]

Sorry I deleted the post quickly after realising you asked for one knob turn only. 80mm is the total travel distance before the mirror comes off the baffle tube. I don't know what one turn is in travel. I changed the focuser to a micro-focuser as well on mine.

[Merlin66]

Total travel is around 30 turns of the focus knob.

[bojan]

Thank you guys..

Yes, I meant total travel (or per knob turn)
So that means total travel is done with 30 turns, or 80/30 = 2.7mm /turn?

[Merlin66]

Bojan,
I don't think the thread is that coarse....Marc has given a total baffle length, not the travel distance of the mirror..

[bojan]

Exactly my thinking...
Thread is probably 1.25mm... or 0.75.
I will have a look...