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Old 14-08-2012, 04:26 PM
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g__day (Matthew)
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Join Date: Dec 2005
Location: Sydney
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Really nice!

One thing surprised me - did you mean the OTA weights 170lbs?

That's 77 Kgs - yet its counterbalanced at only 1.5 times its distance from the balance point by what looks like 20kgs of iron?

I don't understand how a 4" lens in a steel tube weighs 77 kgs. Must be built like a tank!
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