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Very Interesting, thank you! But it seems there are several methods to create composite views on SDO website (several freq ranges used as RGB of the output com
by FoeNyx 12y ago
Very Interesting, thank you!
But it seems there are several methods to create composite views on SDO website (several freq ranges used as RGB of the output composite images). I guess there isn't one easy way to visualize all of this, or is it ? Do you know if the embryonic "3D magneto-hydrodynamic models" are by any chance available on the web to play with ? :)
Also, in the case of the video, I don't know the intent of the creator so it's just a supposition, but if it's for science vulgarisation rather than science exactitude, I guess a composite view, as http://sdo.gsfc.nasa.gov/assets/img/latest/f_094_335_193_1024.jpg http://sdo.gsfc.nasa.gov/assets/img/latest/f_094_335_193_102... , would have be less appealing to the targeted public, as it would look way more artificial than the red/orange sun shown in the video (though it is also a totally arbitrary colouring). The suspension of disbelief in "hey look it's our Sun!" is probably easier using those culturally accepted warm colour tones to represent it.
- mturmon 12y agoI don't know of one particular way to visualize all the bands. Sometimes at conferences you will see specialists' posters with composite views like the one you linked. But usually they will show the individual bands separately, side by side. I think the colorings were chosen by the predecessor instrument to SDO/AIA, which was on SoHO, and they have just been retained. It's funny, I never thought to ask who came up with them, because AFAIK they are arbitrary. You need an expert to drive the MHD models. They are still in development, although you can find videos online. Incidentally, I notice there is a nice video showing the transit of Venus: http://sdo.gsfc.nasa.gov/assets/img/latest/mpeg/latest_1024_0131_venus.mp4 http://sdo.gsfc.nasa.gov/assets/img/latest/mpeg/latest_1024_...