From: "Jim Miller" 
To: "John Sherman" ,
        
Reply-To: "Jim Miller" 


i'll probably end up flocking the edge of the secondary. the flat black
acrylic paint doesn't cut it on such a large area. on other smaller and
more irregular things (hub threads, etc) it seems fine.

jtm

----- Original Message -----
From: "John Sherman" 
To: 
Sent: Tuesday, February 18, 2003 7:44 PM Subject: Re: ATM Updated 18"
f/4 Web site







Tom,

>Do you find a need to cover/blacken more of the spider/hub...so that
>fewer non-black parts are visible from the focal plane?

I had the same problem. My parts were already spray-paint black, but when I
added velvet to the parts of the spider and hub facing the focuser there
was a significant improvement in contrast.

Yes Jim, nice scope and site. Took a while, but I finally found a plastics
store that sells the coroplast stuff you mentioned a while back. Good
lookin' stuff.


John

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