RE: [ATM] Wind resistance & golf balls

["mbyorick" <mbyorick@starband.net>]

Stan Truitt wrote:
> Splendid reductions in wind effects were
> noticed when the upper part of my 12.5 inch OTA
> was replaced by a truss tube arrangement.  It was
> a surprise, when a light baffle, opposite the
> focuser, was improved by using a thin dark gray
> open cell foam sheet.  It let the wind blow
> through, instead of generating pressure
> differences and the concomitant aerodynamic
> effects.
> 
 Wonder if you could please describe a bit more specifically what type
of foam you used (and perhaps where one could find it)?  I converted my
Sonotube scope to a truss tube, and noticed a major improvement in
tolerance to wind (as you might expect), until I added the light baffle,
which acted like a SAIL, and I'm nearly back to where I started (except,
of course, for a 30 lb. lighter OTA)!

 Thanks,
Mike Byorick

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