Hi Peter,
I've had First Light today for my F8 scope. We built these at our society out of 150mm pipe with a 127mm mirror with a focal length of 1016mm.
As soon as I set up the scope tonight (to image Jupiter) the clouds started rolling in
.
This time around I was a little bit wiser and got the camera setup and focus worked out during daytime (see pictures below for results) which made the job a LOT easier.
I also setup one of my eyepieces parafocal with the camera by adjusting the focuser with camera, then move the eyepiece in/out without moving the focuser until I had it focused, then put 3 pieces of mounting tape on the eyepiece to hold it in that position.
I now have an eyepiece which, whne inserted to the "mounting tape stop", allows me to adjust the focuser, then swap over to the camera and have a near perfect picture
.
What sort of mod are you trying on your focuser to reduce movement during adjustment? I have been thinking about how I could fit a little motor+gearbox to my focuser.
Camera daytime setup on primary focus:
The first image is an object at 1km istance, the other two are 5km away.
(Distances courtesy of google earth - great program)