Quote:
Originally Posted by anj026
One method of doing this is to glue ground up walnut shell or similar coarse material to some card sheet and then paint it matt black. Roll the card sheet into a tube and push it into the telescope tube, gluing it at each end to hold it in place.
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I tried a similar technique when building my artificial star, using card stock and sand, and I also tried sand paper. My problem was that I couldn't find a paint that was really matt when viewed at the angle that the light will be hitting it at. I guess I need some carbon nanotubes.