Paul, You will need to move the mirror forward a little to insert the
screws. Turn them them until the threaded section of the screw is fully
through the back and spins freely. Then move the mirror back with the focus
knob (CW) until it just contacts the screws and start them into the miror
cell. Move the mirror a little at a time until the screws are full in and
the mirror cell is fully back. The mirror is mounted (cemented) to an
aluminum casting with taped holes that line up with the holes in the back of
the scope. You have to use the origional screws with a section of the
threads cut off near the head. A regular screw will not work as the threads
in the cell will likely be out of phase withe the back casting threads and
without the threadless section you will not be able to draw up the cell.
You are exactly right. There is glass exposed at the bottom of the screw
holes - the mirror - but the back surface is 2 1/4" down when the mirror all
the way back. My screws are 1" long.
Ed Joganic.
toggle quoted message
Show quoted text
----- Original Message -----
From: paulatkinson22@...
Subject: Re: Mirror Lock screws
Wayne,
When handling the OTA do you need to focus the mirror completely forward
or
backward before screwing in the restraining knobs? Also, how will you
know
they are where they need to be? Will you feel the screws hit the back of
the
mirror?
Paul Atkinson
[This message contained attachments]
________________________________________________________________________
________________________________________________________________________
Your use of Yahoo! Groups is subject to
