Jupiter with Shadows of Europa and Ganymede 1/3/12 at 23:00 PST
Jupiter with Shadows of Europa and Ganymede 1/3/12 at 23:00 PST
Jupiter with Shadows of Europa and Ganymede 1/3/12 at 23:00 PST
This is a photograph of Jupiter on 1/3/12 at 19:55 PST. This is a bit of an unusual image in that there are shadows of two of Jupiter's moons (Europa and Ganymede) transiting the face of the planet. Europa and Ganymede are also visible to the lower right of the planet.

In this image, North is Up.

Exposure Details
Lens Celestron C-8 SCT at Prime Focus
Focal Length 2000mm
Focal Ratio f/10
 
Mount Schaefer GEM - 7 1/2 Byers Gear
Guiding Unguided
 
Camera Canon 450D - Gary Honis modified
Exposure 89 subexposures of 1/25 second each at ISO 1600
Calibration None
 
Date January 3, 2012 at 23:00 PST
Temperature 55F
SQM Reading
Seeing 3 of 5
Location Pine Mountain Club, California
 
Software Used Images Plus 4.5 for Live View camera control, video processing, stacking, aligning, initial sharpening, and multiresolution sharpening. Photoshop CS5 used for levels and curves, color balance, high pass filter, and saturation adjustments.
Notes I was very excited to capture the shadows of two moons at the same time. The seeing forecast for the evening was veyr good, however this did not actually happen. The seeing was fair, and by the time I went to take this image, there was a little bit of high clouds. So, the image isn't terribly sharp, but the shadows are clearly visible.