From: firstname.lastname@example.org (Bartbob)
Subject: Re: Focusing Scopes
Date: 26 Sep 1997 08:10:22 -0400
Your problem is not uncommon. But the solution is simple.
First, unscrew the eyepiece far enough so the reticule is very much out of
focus. Then quickly look through the scope at the clear sky; no more than
one second looking through it. The reticule should be well out of focus.
Screw in the eyepiece one full turn, then repeat the quick-look process
against a clear sky. Repeat this until the reticule is sharp and clear.
Second, set the adjustable objective for infinity. Then quickly look
through the scope at a target a mile away. The target should be sharp and
clear. If it isn't, the scope's objective lens has shifted and needs to be
returned to the factory for fixing. If the distant target is sharp, then
all is well.
Third, set the adjustable objective for 100 yards, then look at a target
through the scope. It should be clear and sharp. If it isn't, then you
can adjust the scope a bit to get it so.
Hope this helps.