"Don't look a gift horse I? the mouth". If it works good go with it. It still however sounds close to the end which puzzles me
I still am not sure about your back focus spacing though but without hands on it is tough to diagnose problems via the Internet. You, I take it, are using the stock focuser on the mirror. I have a Micro Focuser so perhaps there might be some difference and to be honest I just don't know. In any event you can image so for now you can play.
Take care
Gary
Carpe Noctem
Sent from my space ship via my LG V10 Phone
On Jul 14, 2016 6:59 PM, "'
keithnk@...'
keithnk@... [C14_EdgeHD]" <
C14_EdgeHD@...> wrote:
?
??If C lets me take it apart, without voiding the warrantee,?to see if there's anything to be found there, I would love to. I'm one of those geeks who eventually takes all my toys apart to figure out how they work, and see what I can do to make them better.
Problem solved,
Celestron allowed me to take off the focus knob and see what I could see, without voiding the warrantee.
So, I did. The mirror still had almost 1/4" fwd movement available, but the shoulder washer bolted to the end of the threaded focus?rod was hitting the shoulder?in the brass fitting, stopping further fwd?travel (as it's supposed to). So I added?0.067" of washer between the shoulder washer and rod, effectively adding 2.3 further turns?to the focus knob. Now it focuses at f7 with a little over a turn to?spare. I don't know if the rod was a turn or two short, or the shoulder in the brass not bored quite deep enough, but I don't care. It works.
Keith
