From: Rick Maillet 
To: atm{at}shore.net
Reply-To: Rick Maillet 


Hello All,

I recently made a laser collimater,(red light) and after using it to line
up the optics I find the views are...well... not as good as when I used the
homemade sight tube collimater.
maybe the atmospere has alot to do with it, not sure, but I have noticed
one thing that concerns me, so here goes
When the laser light is centered on the primary, and reflects back to the
point of origion, (this I assume is when the optics are in alignment) If I
then place a piece of paper in front of the tube opening, there is a red
circle showing, around the secondary on the paper,this circle appears even
all the way around.

I am thinking this means my secondary is to close to the primary and not
catching all the rays returning from the primary, does this make sense. I
assume no light should get past the secondary, is this correct.

                                                   Rick

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