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About the rotated animation: The image source is the SDO satellite, which happens to be standing on its head while orbiting the Earth. So, its raw images alre
by mturmon 12y ago
About the rotated animation: The image source is the SDO satellite, which happens to be standing on its head while orbiting the Earth. So, its raw images already came in rotated by 180 degrees. (Well, within 1 degree of 180 anyway -- determining the precise angle is rather difficult[+].)
I get the feeling that the person who made the video did not know this, and just made the video by linking the still science images, which are freely available.
To anyone who is used to solar imagery, seeing the Sun rotating backward is very disconcerting. To a real specialist, seeing that particular AR upside down is also disorienting.
[+] You can't find the Sun's equator or poles very accurately, so I think the instrument team used the transit of Venus (possibly Mercury) between the camera and the Sun to establish the angle calibration.