Monthly Archives: August 2008

Location: Rising Star, TX
Time: 9:30-11:30
Sky was clear and dark. Setup options were limited. Setup near warm blacktop shaded from bright street light. Forgot to bring power adapter, so observation required adjusting GEM by hand.
Located Jupiter easily. Moon orbit reference in S&T showed four moons visible, but only three visible in the eyepiece. After a few minutes of continued observation, fourth moon seemed to appear approx 1R from Jupiter’s disk. Realized I had seen moon (later identified as Io) emerging from an eclipse!
Io emerging from Jupiter's Shadow

Io emerging from behind Jupiter (30 minutes time lapse animation)