Neptunian System Imaging |
Neptunian System Imaging |
Oct 11 2010, 09:30 AM
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#1
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
Neptune from Voyager 2. Color is from images with CH4JS, green and orange filter.
Shadows of three moons are visible. Second image is with possible interpretation. -------------------- |
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Oct 6 2022, 07:39 PM
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#2
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Solar System Cartographer Group: Members Posts: 10229 Joined: 5-April 05 From: Canada Member No.: 227 |
Simplest approach:
The oblique view makes the rings look like an ellipse. draw a line through the long axis of the ellipse and measure the brightness along it. Add the left and right sides together to reduce noise, and rotate that in a circle. More sophisticated: stretch the image perpendicular to the long axis so the rings look circular. Take multiple radii out through the rings in the sectors which are less obstructed by the planet itself. Add together to get an average and rotate that in a circle. My version was more like the second. Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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