"Just as an update to my earlier review....

It's been a few years since I wrote about the Cats Eye. Since then,
I've used the Cats Eye successfully in the field with my 8-inch
Newtonian. I also installed the system on my15-inch f/5 three years
ago and have used it since.  And...I've also added a 24-inch
Starmaster, and for the past year I've used the Cats Eye on it too!
(Hmmm, does Cat's Eye cause aperture fever?)  I use the 1.25-inch
version on the 8 and 15 inchers, and the 2-inch version on the
24-inch.

Why do I use the Cat's Eye? Because it's ACCURATE and it's EASY. The
triangle reflects a laser if you decide to use one (I use the laser to
help with the initial secondary alignments only).  And the points tell
you which collimating screw to turn.  Plus, when used in conjunction
with the Tectron autocollimator, the Cat's Eye system will take your
collimation to that final step of convergence.  I'm flattered when
folks rave about my mirrors, but the dirty little secret is that the
best collimated scopes are the ones that give the best images.  If I
ever get that 36-inch scope, you can bet that the Cat's Eye will be
collimating it too."

Alex Langoussis
25 Aug. 2001