[HN Gopher] The Wall: Geostationary satellites near-real-time an...
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The Wall: Geostationary satellites near-real-time animations
Author : alas44
Score : 156 points
Date : 2022-01-08 13:20 UTC (9 hours ago)
(HTM) web link (earth2day.com)
(TXT) w3m dump (earth2day.com)
| alas44 wrote:
| Made by the father of a friend with decades experience in
| satellite imagery. It works recombinining public data feeds from
| several satellites to create close to real time RGB views of the
| planet.
|
| Most free data being from old satellites watching earth only a
| wavelength, the magic behind those breathtaking views is to
| recombine the data to create RGB impressions and correcting for
| the different spacial movements and orientation of satellites.
|
| Some highlights in the gallery such as the California and
| Austrialian fires, as seen from space
| https://earth2day.com/TheWall/Gallery/gallery.html
| ComputerGuru wrote:
| > satellites watching earth only a wavelength
|
| You a word there, friend.
| avalys wrote:
| Wow, this is amazing!
| derefnull wrote:
| Agree, this visualization is beautiful -- wow!
| kall wrote:
| I'm fascinated by "current" satellite images. The most enjoyable
| option I've found is the FreshSat layers available in the Gaia
| GPS app. Being able to hold it in your hand while out and about
| and "look over walls", so to speak, is really fun.
|
| They combine the free Sentinel and Landsat images, I think, and a
| few web services do that too, but none of them seem to work as
| well.
| bener wrote:
| Hmmm I just downloaded this and signed up but I can only get
| topo maps for free.
| kall wrote:
| Oh that's unfortunate. I just checked and FreshSat is listed
| as a "Premium" layer in the app. It's a good piece of
| software but not worth it just for what is essentially free
| data.
|
| You can pan around the map a little bit here:
| https://www.gaiagps.com/maps/source/freshsat-cloudless/
| mutagen wrote:
| This is awesome, a great resource!
|
| I've been watching the College of Dupage's satellite weather view
| [0] for the past year with wildfires and atmospheric rivers
| coming through.
|
| Select a sector to zoom in to and a data product or combination
| and you have a nice animation of the recent satellite view [1]
|
| [0]https://weather.cod.edu/satrad/
|
| [1]https://weather.cod.edu/satrad/?parms=local-Tahoe-
| truecolor-...
| WhiteOwlEd wrote:
| Is there a reasonably priced service (for individual budgets and
| not corporation budgets) that would allow you to rent a satellite
| in order to for example count the number of Teslas that are out
| on the road in a given city in the United States?
| mistrial9 wrote:
| not possible -- the "complete coverage" companies have to deal
| with clouds and other atmospheric elements. Good math helps a
| lot with creating landuse coverages, but you can never increase
| the detail as you are asking
| fxtentacle wrote:
| Usually non-military satellites max out at 1 pixel per 30 cm,
| so the resolution will most likely be too bad to decide if it's
| a Tesla or not.
| seshagiric wrote:
| There are startups like Albedo attempting at 10cm satellite
| imagery, but apparently 3-4 years away from launching.
| jiert wrote:
| Planet has some services that use machine learning to count
| ships and detect roads. I believe you might be able to run your
| own models on the data, but detecting teslas vs other cars
| would be difficult at current resolutions. Unfortunately not
| reasonably priced for individuals
| thakoppno wrote:
| humor me, what's the angle - front running quarterly financial
| results?
| dan-robertson wrote:
| The thing you describe is not front-running.
| [deleted]
| zapdrive wrote:
| And.... It's been hugged to death.
| moffkalast wrote:
| By HN? There's like 5 of us here. Must've been Reddit.
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(page generated 2022-01-08 23:00 UTC)