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Click on the above Alberio or NGC7380 image to see
larger images. |
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OTA tube: 12" OD x 49.5" tall: 6.4 lbs |
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Carbon fiber was slightly less than 30% resin by weight
of carbon fiber. |
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Click
here for a short 1.15MB video showing Rick throwing his tube
in the air to help convey the low mass of this tube.
Although this tube weighs 6.4 lbs, it can take a 190
lb person standing on it without making a sound or noticeable
deflection. Although this is a very crude test, the primary mirror
on this telescope is only 10" in diameter. Rick used a 10"
f5 RF Royce center post conical that weighs 7.0 lbs. |
The inside of the OTA tube has a finely textured,
matte surface. |
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