Transit of Callisto | April 2011

Jupiter’s moon Callisto appearing as a dark dot against the bright planet’s disc, was seen transiting Jupiter on April 4, 2021, 5 am local time. Another Jupiter’s moon, Io, the cloud bands, and the great red spot, are also visible in this photo. Very bad seeing conditions made it difficult to capture sharper views of the planet.

Callisto’s transit was captured with a 4 in f/9 refractor and a dash camera, processed in IRIS.

For a complete list of astrophoto images, click here.

Related links:
Transit of Io
Transit of Venus

Night Sky in Focus | Astronomy and Amateur Radio
© Anthony Urbano | Manila, Philippines

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