Tuesday, November 4, 2014

Wobbling Moon

One may think the Moon is faced towards us always the same side. Well, yes and no :) Actually the Moon oscillates a little during its orbital motion, so experienced observers can peek a few degrees to the dark side of the Moon. This phenomenon is called libration.
You may compare prominent crater Herschel pictures made this year by me in different seasons:

Herschel - 03.11.2014, SCT11", ASI120MM

Herschel - 14.03.2014, newton 6", ASI120MM
The difference in the view angle is quite dramatic.

Clear skies!

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