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  1. Not exactly backyard astronomy. This exercise took money and lots of it. The ISS pass was recorded at the diffraction limit of a 25 inch Ritchey-Cretien instrument (super expensive) and then the AO hardware. This total hardware cost is likely in the millions of dollars. Yje Clay center is an impressive installation that exceeds some of the instruments up the hill at the famous Lick Observatory here in SJ.

    http://www.dexter-southfield.org/podium/default.aspx?t=11309

    As a comparison, the most rabid amatuer imagers I know have total equipment budgets approaching $100K (mine is under $10K — all bundled with a medium diameter Schmidt Cassegrain scope, mount, and not including the Suburban to get it all out of town), and my observing results using eyeball, pencil and paper are pretty decent.

    I do know some guy named “Sam” lots of money, who uses the best in adaptive optics, using still larger diameter telescopes, positioned at lower altitudes than ISS. Betcha he gets some great images of smaller detail than shown on Google Earth.

    -SJBill

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