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Leslie Charles

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  1. Tom, I did look at "MSL Coordinate Systems for Science Instruments" that is what my previous post pertained to. The "View Documents" was of no help as there were numerous documents and I did'nt know where to start. Is there a specific document that explains all the items in the PDS label? After re-reading "MSL Coordinate Systems for Science Instruments" the r vector in my previous post doesn't seem correct. However the computations for Θ and Φ seem appropriate. Of course I cannot be sure of that until I find out what Model_Component_3 = "Horizontal" x,y,z vector values actually re
  2. Tom, I looked at SCLK 399189865 Sol 19 Model_Component_3 = "Horizontal" so I started there x = 461 y = 366 z = 9.84 r = (x² + y² + z²)^½ → r = 589 meter? Θ = tan^-1 (z/(x² + y²)^½ → Θ = .0167169 Rad ↔ .958° ↔ 89° above horizon Φ = tan^-1 y/x → Φ = 38.4° or 51° East of Due North. I believe SCLK 399189865 is of Mount Sharp which was south of Curiosity on Sol 19, so my calculations don't make much sense. Les
  3. Is the information about the direction of one of Curiosity's camera included in the PDS Label information? Could someone explain how to translate the data information so that the bearings of the camera when a picture was taken can be understood according to North-South-East-West on the martian planet? Thanks, Leslie Charles
  4. Hello, I'm interested in the opinions of Mars researchers concerning following: If there is little dust in the Mars atmosphere, the near-horizon martian (northern hemisphere) sky during early spring seems to look jasmine (yellow with a little orange). The color appears to change to gridelin (dark violet grey) as the distance above the horizon increases, becoming darker as the view moves toward the zenith of the martian sky. As spring turns to summer some photographs give the impression that the jasmine color becomes less prevalent, now the jasmine to gridelin color change looks l
  5. Hello, I'm trying to find color pictures of the martian terrain with sky that show the natural colors for each Mars season. For southern hemisphere late winter I found a suitable picture that includes the date and time the picture was taken, along with the "natural" colors. See link bellow: http://an.rsl.wustl.edu/msl/mslbrowser/pia.aspx?pia=PIA16800 Unfortunately, I have not been able to find anything provided by Curiosity for the seasons (sol = time in martian "days" Curiosity has been on planet) : Spring (≈ sol 40 to 184); Summer (≈ sol 185 to 322); and Autumn (≈ s
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