iceman
23-05-2008, 06:42 AM
Hi all
Here's an 8-frame animation of Jupiter, including 5-frames showing her moons Europa, Io and Callisto in motion.
Jupiter's Moons in Motion (http://www.iceinspace.com.au/downloads/20080514-jupiter+moons_anim.gif) (1mb animated gif) Remember to scroll to the right!
Callisto, moving towards Jupiter, is casting the shadow on Jupiter in the first few frames.
Europa and Io are in a close pairing, moving away from Jupiter.
I was lucky enough that Callisto was *just* close enough to Jupiter so that I could capture a reference frame to pinpoint the Moon's position relative to Jupiter. I could then capture a separate set of avi's with the 3 moons in the same Field of View. This was repeated 5 times throughout the session to get the data for the animation.
Jupiter's 8-frame animation was tricky to align in terms of limbs and colour balance, because the first 4 frames were captured in poorer seeing at 30fps with a decreasing histogram due to the mirrors fogging up. The last 4 frames were captured at 15fps with a much fuller histogram in improved seeing.
Attached is a single frame from the animation - you need to click on the link below to see the full animation.
Jupiter's Moons in Motion (http://www.iceinspace.com.au/downloads/20080514-jupiter+moons_anim.gif) (1mb animated gif) Remember to scroll to the right!
Thanks for looking, comments welcome.
Here's an 8-frame animation of Jupiter, including 5-frames showing her moons Europa, Io and Callisto in motion.
Jupiter's Moons in Motion (http://www.iceinspace.com.au/downloads/20080514-jupiter+moons_anim.gif) (1mb animated gif) Remember to scroll to the right!
Callisto, moving towards Jupiter, is casting the shadow on Jupiter in the first few frames.
Europa and Io are in a close pairing, moving away from Jupiter.
I was lucky enough that Callisto was *just* close enough to Jupiter so that I could capture a reference frame to pinpoint the Moon's position relative to Jupiter. I could then capture a separate set of avi's with the 3 moons in the same Field of View. This was repeated 5 times throughout the session to get the data for the animation.
Jupiter's 8-frame animation was tricky to align in terms of limbs and colour balance, because the first 4 frames were captured in poorer seeing at 30fps with a decreasing histogram due to the mirrors fogging up. The last 4 frames were captured at 15fps with a much fuller histogram in improved seeing.
Attached is a single frame from the animation - you need to click on the link below to see the full animation.
Jupiter's Moons in Motion (http://www.iceinspace.com.au/downloads/20080514-jupiter+moons_anim.gif) (1mb animated gif) Remember to scroll to the right!
Thanks for looking, comments welcome.