Earthshine blog

Earthshine blog

"Earthshine blog"

A blog about a system to determine terrestrial albedo by earthshine observations. Feasible thanks to sheer determination.

Moon movie with halo

Showcase images and animationsPosted by Chris Flynn Mar 23, 2012 04:34AM
Movie shows 9 images of the moon centered on a particular crater on the bright side.

Greyscale is "minmax" + "log" in DS9.

The halo light looks very stable around the bright side edge. Naively at least, it appears as if the determinations of alpha (power law fall off of scattered light at large angle) should be very stable.

In this time sequence one can see the terminator changing slightly -- certain features brighten, others dim - - especially crater walls and mountains.

Movie is here:

http://www.astro.utu.fi/~cflynn/Vmovie.mpeg

play it with e.g. mplayer Vmovie.mpeg -loop 0
for a continuous loop.


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Posted by Chris Flynn Mar 25, 2012 01:47AM

Yo! which means that the BS luminosity is changing a bit during the time
sequence seen here, and strictly speaking needs to be taken into account with the forward modelling method...

Posted by Peter Thejll Mar 23, 2012 03:22PM

Hey! We can see the Sun setting over some craters on that film! Super job, Chris!