From: J-Engineering 
To: "atm{at}shore.net" 
Reply-To: J-Engineering 


Hi All,

Several have suggested using a non-lasing laser diode in a star test for
testing a spheroid.

I have since set that up, and with the help of Suiter's Star Testing book,
I'm trying to figure out what the test is telling me.

Things look pretty good except I see a couple of adjacent  rings that are
brighter than the rest. Out of ten rings, they are the fourth and fifth
ring from the center as seen inside focus.  Does this observation tell me
where the problem is or just that there is one?  In other words, can the
star test tell you which non-edge zones need attention and what correction
to the surface is required?

--
Ray

--- BBBS/NT v4.00 MP