The Science of The HiRise Camera.
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by Kitharode moderator
Not for the faint-hearted, but packed with useful stuff:
https://wiki.umn.edu/pub/ShackeltonCraterProject/CameraInfo/HiRISE_Manual.pdf
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by angi60
It'll take me a bit to read and digest this, but it looks fascinating 😃
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by Kitharode moderator
Well worth a scan through. Sections of it are quite readable and do tell us a lot of interesting stuff and there are a couple of really interesting images in there. Great for the techno bods and science heads, but no denying the weightiness of these articles.
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by angi60
Well I'll do the best I can! 😉
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by Kitharode moderator
HiRise follows a sun synchronous orbit. To achieve this, the inclination (tilt) of the HiRise orbit must be greater than 90 degrees. Although this video is based around the Earth the ideas being presented are exactly the same for satelites orbiting Mars.
http://www.youtube.com/watch?NR=1&v=4K5FyNbV0nA&feature=fvwp
For those of you not familiar with the terminology being used, the idea is that if your orbit is tilted less than 90 degrees your 'crossing point' at the equator goes in the wrong direction to keep you sun synchronous. If greater than 90 degrees then your crossing point moves along the equator in the right direction. A tilt of around 93 degrees would move your crossing point in the right direction, at the right speed, to keep you sun synchronous. Tricky stuff. ** 😛 **
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