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Thanks Rob, I have been looking into observing from the 1800's and I wondered why they made their scopes so long. Double the power for a given mirror would seem a good reason.
Standing on the ground is also possibly one of the reasons they moved to faster and shorter?
But if I understand correctly (something my wife says rarely occurs) for detail observing slower is better with the trade off of needing some way of reaching the ep.
Brian
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