[AZ-Observing] Re: Nice Aluminum Tubes for Refractors

Stanley A. Gorodenski wrote:

> Today I was in Phoenix and was in Capital Metals. They have about a 
> dozen mill end aluminum tubes. They are 6061 T6 aluminum, are close to 
> 6" O.D., and are about 40" long. The light weight of aluminum and the 
> toughness of 6061 T6 would make them excellent tubes for refractors.
> Stan
> p.s. I forgot to mention, they are 1/2" wall thickness. This would make 
> for a good rugged OTA, rivaling and surpassing TMB's. :-)
> 

About 35 lbs, before adding optics, baffles, focuser, etc. However,
the tube shouldn't dent too easily.

Dave Lehnen


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