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Hi Claire, no... It's always nice to see another developing a growing interest in the heavens. That first scope was a half-size twin of the original Oddie refractor at Mt Stromlo, and used for site surveys before it was donated to the school somewhere around 1930. The objective was in coated of course and produced a textbook - perfect diffraction pattern at high power. Your 5" dob probably has about the same light grasp, but shorter focal length.
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