Finally ordered the required precise parts adapter to get my Wide-field NB rig up and running. 71.5mm back focus for the heavy Pentax medium format lense rocks!
I'm looking to do a similar thing myself, with a Canon zoom. I figured two of the holder rings should do the trick, but the tilt adjuster is only $2 more
Update, the whole assembly feels very solid, and due to it all being screw mount, I hope tilt at these low focal lengths is fine.
Humayun - focus? Periodic manual of course. Until a few geniuses work out an elec focuser for me! Tested the focus just now, bloody good despite me still needing another 5.5mm spacer, grrrr.
It is very easy to rig up a RoboFocus with a belt and sprocket contraption. I'll be doing the same with my 200mm lens on the STL-11000M for a summer project.
I've got something similar in the works Simon, planning on getting Meru to print some bits and pieces for me Just waiting for other bits and pieces to arrive so that I can start drawing up some drawings.
Haha Mike, you can't have everything! But I'd be happy to swap for your FSQ maybe?!
Rick, to keep you happy I've attached a first light, pretty sharp stars despite 'no guiding' and yet to receive a 5mm spacer to achieve perfecto back focus.
Ironically I used PI to adjust the brightness of this snap.
Sorry to say it's my best star image ever taken with the cam...
Rick, to keep you happy I've attached a first light, pretty sharp stars despite 'no guiding' and yet to receive a 5mm spacer to achieve perfecto back focus.
Ironically I used PI to adjust the brightness of this snap.
Sorry to say it's my best star image ever taken with the cam...
Nice shot, Simon. I see you've avoided peaking too early and left some room for improvement