[APML] Camera testing

["Michael Barlow" <mikeba@rochester.rr.com>]

    My sister used to work for Xerox (I think) and used to test theirs and
competitions copiers and printers.  What she did was to have them print out
pictures of stick figures and lines and what not's to find out how well they
all performed against each other.  She used to bring home some of the print
outs to show us the subtle and large differences between all the different
makes and models.  This gave me an idea and I'm wondering if I could use
something like this...

    I'd like to find critical focus through my SCT and through my ST80 at
Cassegrain/Prime focus with my OM1 attached.  What I'm thinking is setting
up a 8x11" sheet of grid (1/4" squares) paper some X feet away, getting to
focus and taking pictures of this.  Would this be worth while for the
following reasons and if so what would be some of the parameters I should be
thinking about?

Finding out how distorted the grid becomes on the film, find out how well my
eye's are to find critical focus, find any other anomalies with the
scope/camera system?

Michael A. Barlow

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