An Eclipse On Jupiter

Using Calsky.com and Stellarium I was finally able to find a night when I could get outside while a moon of Jupiter was casting a shadow on the planet. Eclipses are rare on Earth, but Jupiter's moon Io is close to the planet and causes eclipses fairly regularly. I took a bunch of pictures so that they could be stacked later. Individual pictures didn't show much, but the final stacked image absolutely shows the shadow of Io!

Jupiter with Io Transit Shadow

Jupiter with Io Transit Shadow

Jupiter with Io Transit Shadow labeled

Jupiter with Io Transit Shadow labeled

Photos were 1/1250 shutter and 1250 ISO. I can probably lower the ISO and slow down the shutter to remove some of the grain.