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Help Required: Saturn's Cat's Eye Effect
Hi. (Sorry, This thread was originally in General Chat)
I am hoping that you might be able to assist me in a project that I am coordinating for students at my school (St John's Anglican College, Brisbane). We are investigating the "opposition effect" of Saturn and we are keen to gather as many images and measurements of Saturn for about a month either side, and including, opposition on 4 April 2011.
We wish to see if the "opposition effect" (or cat's eye effect) is detectable this year. This is where the intensity of light off some surfaces increases dramatically when the light hits the surface and bounces straight back compared to other angles. We have heard about the effect but it has rarely been observed.
Images would be wonderful (with the time they were taken). We would like to calculate the intensity of light from the rings compared to the intensity of light from the planetary disk. We are going to plot the ratio of these over time. Could anyone help us with photometric data, please?
Regards Ian (Skip) :welcome:
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