341–350 of 390 posts
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Exactly! I'm working on some stuff now to exploit this very effect, the small time difference in the bands can be used to find velocities of moving objects.
Is this at all analogous to how we used red/blue shift to determine the speed at which astronomical objects are moving towards/away from us?
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Not OP, and no idea on pricing, but https://www.spymesat.com/new-tasking.html appears to allow you task a satellite selfie on demand
According to the pricing tab, it costs ~$20 to get a 1 km2 area with a 30-50cm resolution.
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I'm very intrigued as to what is going on here - it almost looks as if it veered off the runway. Anyone got any suggestions?
The op of this thread replied to my comment with a military.com article, and in that article there is a link to an article on thedrive, https://www.thedrive.com/the-war-zone/42392/damaged-b-2-spir... "According to sources, the B-2 experienced a hydraulic failure in flight and had its port main landing gear collapse during landing, sending it off the runway with its wing dug into the ground. We cannot confirm that thi…
Artist James Bridle calls them "Rainbow planes" and has used this in his art. Rainbow Plane 002: Kiev. October 29, 2014: https://booktwo.org/notebook/rainbow-plane-002-kiev/ Rainbow Planes: https://www.flickr.com/photos/stml/sets/72157637938061015/
https://nationalpost.com/news/russian-satellite-image-of-mh1...
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I googled it and came up with multiple answers. Instead of demanding people prove their work, take reasonable statements in good faith imo.
But do such consumer services mask military targets? Probably yes.
Interesting how the three separate R/G/B images are taken independently a few ~seconds~ milliseconds apart, with a different color filter placed over the image sensor. I assume this is to maximize resolution, since no Bayer interpolation [0] is needed to demosaic the output of a traditional image sensor that integrates the color filters onto the sensor pixels themselves. As these satellites are not intended to photog…
These are pushbroom linear sensors stacked up in the focal plane. The spectral channels are physically separated by larger distance than neighboring pixels in a Bayer grid. There is a time delay between each channel sweeping over the same location that gets corrected when the final imagery is aligned. The moving plane at altitude violates assumption of a static scene and exposes the scanning behavior.
Interesting how the three separate R/G/B images are taken independently a few ~seconds~ milliseconds apart, with a different color filter placed over the image sensor. I assume this is to maximize resolution, since no Bayer interpolation [0] is needed to demosaic the output of a traditional image sensor that integrates the color filters onto the sensor pixels themselves. As these satellites are not intended to photog…
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This is still the case today. See for example this military base in France: https://goo.gl/maps/gRLEBcCQB9CCx8Au6
Why does _france_ need to hide their millitary bases? I mean, France?