Sunday, September 26, 2010

Time lapse Europa transit

This is an 11 frame sequence where each frame, of red only, consists of 10sec or 400 - 500 frame stack.  Each frame is taken back to back so, 11 frames x 10sec per frame = 110seconds or just shy of 2 minutes of rotation time.  Each of the 10 motion frames are displayed for 100ms or 0.1sec, the last one is held for 1second.  This means that 10frames x 0.1sec = 1second of time per 'spin'

So, long story short, in 1second you'll see nearly 2 minutes of Jupiter's rotation, that's over 100 times normal speed.

What's really interesting is how far the moon and shadow move in only 2 minutes.  This is taken with my Celestron C8, 2.5x PowerMate and PGR Flea3.  EFL ~  5080mm or f/25.  The stacking and processing was done at 2x up-scaled and the final rendering in Gimp gets rescaled back to 1.5x or 150% sized.



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