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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Aug 26 2018, 06:29 PM
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#2
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Member Group: Members Posts: 306 Joined: 4-October 14 Member No.: 7273 |
A recreated view of the Neptune system as seen by Voyager 2 at approximately 1615 UT. I picked this time because Voyager made back-to-back observations of Neptune and Triton, so the appearance of these bodies closely approximates what a simultaneous view would have looked like.
Neptune and Triton - Voyager 2 I used a wide-angle OGV shot of Neptune and a narrow-angle GV observation of Triton. I recreated the view using a Neptune Viewer plot taken at the center of the Neptune observation, and then placed the reduced-size image of Triton in the appropriate positions. The slight difference in the direction that the crescent horns point is real - their position relative to the Sun was close enough that the phase angle was different from Voyager's point of view. There is one improvement that I can think of. Neptune's remaining "major" moons should have been present in this scene as well, but I am not sure about their visibility to an observer at Voyager 2's location. Their small size and the position of the spacecraft suggest that they would only be a pixel or two across in the wide-angle camera and most of that surface would be in darkness. I am planning to look through some Neptune images taken a couple hours later where Galatea and Thalassa are present in the frame, which should help me determine if including them in this image would be appropriate. |
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Lo-Fi Version | Time is now: 23rd September 2024 - 03:43 AM |
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