Venus from Ground Based radar and other |
Venus from Ground Based radar and other |
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![]() Member ![]() ![]() ![]() Group: Members Posts: 813 Joined: 29-December 05 From: NE Oh, USA Member No.: 627 ![]() |
Image Release: Venus, If You Will, as Seen in Radar with the GBT
https://public.nrao.edu/news/pressreleases/venus-surface-gbt Impressive. May be awhile before we return to Venus. Perhaps we need a ground based forum for the time being. Craig |
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#2
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Solar System Cartographer ![]() ![]() ![]() ![]() Group: Members Posts: 10197 Joined: 5-April 05 From: Canada Member No.: 227 ![]() |
A third transmitter would help, as suggested, but also the same method applied at a different inferior conjunction will have the Doppler equator (the dark band) in a different location, and all the reflection effects correspondingly moved. By comparing images of different dates the ambiguity can be removed.
There is a long history of radar imaging of Venus, going back 50 years. This is by far the best single image - the bistatic method works really well - but there are many others made monostatically at Goldstone and Arecibo. The brief comments about past work in the press release don't do the subject justice. Anyhoo... there is a good basis for comparison to look for fresh lava flows or other changes. Incidentally, some past results were much higher resolution than this, so I would hope that the image we have is significantly downsampled from the real data. 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 PD: 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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