SaratogaSkies Jim Solomon's Astropics


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Jupiter Moon Animation

Image Details:

Camera: Mofidied Philips ToUcam Pro II (840k): Color RAW Hack
Mount: Celestron AS-GT
Scope: Orion ED80 (80mm f/7.5 APO Refractor)
Configuration: Focal Reduced
Additional Optics: William Optics 2" APO 0.8x Reducer/Field Flattener
Filter: None
Effective Focal Length: 480mm
Effective Focal Ratio: f/6
Exposure: 256 x 1/500 sec @ Gain = 10% (Jupiter), 48 frames of 45 x 1/25 sec @ Gain = 27% (Moons)
Date: 7/7/2006, 9:52 PM PDT
Location: Saratoga, CA, USA
Acquisition: Philips VRecord
Focus: Manual
Dithering: None
Guiding: None


  • IRIS: AVI conversion, CFA conversion, Registration, Best-frame selection, Drizzle Stacking (2x), Wavelet processing, FFT filtering
  • Photoshop:Compositing
  • Image Ready: Animation

Image Description:

This is a time-lapse animation of Jupiter's moons. Each frame in the animation is separated by 2min of "real time", and consists of a stack of 45 exposures. Properly exposing the moons, however, resulted in an over-exposed Jupiter. So, I shot separate exposures of Jupiter and composited the whole mess in Photoshop, then used ImageReady to assemble the animation. Earth's north is up.