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Friday, August 20, 2021

TRACKING WITH CLOSEUPS: Mutual Eclipse of Satellites of Jupiter

These images show the astonishing progress in amateur astronomy brought about by electronic image sensors and image processing software. Not long ago, even the largest observatory telescopes were unable to resolve the moons of Jupiter as more than starlike dots. Now, with a high-end (11 inch [30 cm] Celestron Schmidt-Cassegrain) amateur telescope, perfectly able to be set up and used from a back yard, it's possible not only to resolve the discs of the Jovian moons but to observe the shadow cast by one on another!

Posted at August 20, 2021 12:00