RE: ATM Light Shroud

[Art Russell <artrussell@mindspring.com>]

On Friday, August 15, 1997 11:46 AM, Jonas Carlsson 
[SMTP:jonas.carlsson@mbox322.swipnet.se] wrote:
> Some kind of black flexible clothing could also be an alternative. I 
think
> JMI uses that on the outside of their scopes. Someway there should be a 
way
> to applicate that material on the inside too.
> Jonas
>

Dave Kriege of Obsession telescope fame recommended "Riptide" a ripstop 
nylon fabric for use as Light Shrouds. Experience suggests that Riptide may 
shrink when exposed to direct sunlight or heating situations, so experiment 
with proper sizing before settling on a final design. Riptide is available 
at many fabric stores such as JoAnn Fabrics.

Additionally, take a look at his article "Low-Tech R&D and Off-the-Shelf 
Parts for Super-Big Telescopes" in Telescope Making Magazine, Volume 44, 
page 44. The article offers additional insights which might be applicable 
for your projects.

Clear Skies!

Art Russell

Atlanta, Georgia

"Second star to the right, straight on 'til morning."
                                   - L. Frank Baum