Mark Wagner wrote:
> I've built a 12.5" f/5 truss Dob, and am considering putting a shroud
> on it. Right now, the scope's balance is just a tad light on the
> front end, really, just a touch. One concern I have with a shroud is
> throwing the balance too far forward. Yeah, I could stick some weight
> in the back end, but I'd prefer to not do that. I can get someone to
> sew the shroud for me, but I'm puzzled about what material to use. I
> think it should be as lightweight as possible, black, stretchy, and
> opaque enough to keep in-town light sources out.
>
> Any suggestions on the material? Help my uncover this mystery.... I'm
> not a "fabric" expert...
hmmm. fabric stores have a material called 'blackout cloth' which
is used behind drapes to allow you to darken a room. I believe it comes
in both dark and white varieties. I wonder if that wouldn't be good to
use? having a white side out could be advantageous in keeping the
scope cooler when its outside in the sunlight, as well as making it
easier to see on a dark field at night so folks don't stumble into it.
--
GSSP Web Page updated 2/25: http://www.goldenstatestarparty.org
Who's observing where? - http://observers.org/OI-calendar/
Mailing list preferences: http://seds.org/mailman/listinfo/sf-bay-tac
Received on Wed Mar 05 12:11:15 2008