This animation highlights a wonderful set of prominence morphologies over about a quarter of the Sun’s limb. From the top to bottom (N to S), I am calling them The Wave, The Hand, The Transient Loop and The Anvil.
A summary of the activity over the 39 minutes/78 frames (15 s frames and 15s delays) so 1 frame/30s sped up 150X:
1) The Wave doesn’t do much, just a few splashes.
2) The Hand wiggles its’ fingers.
3) The Loop is between The Hand and The Anvil, and while mostly quite faint, if look carefully you will see it erupting at the start of the video, then fading and dropping back into the Sun.
4) The Anvil shows flow tangent to the solar surface, but nothing dramatic. Note the Sun’s surface seems to sink in S of The Anvil, so it seems the Sun lost some surface to this prominence?
I took the raw frames as 15 s SEC videos at 640x480 in 16 bit mono (actually 12 bit, which is the camera capability) at about 58 fps. I stacked the 900 frames in Autostakkert as the best 15%. I then wavelet sharpened each with Registax, followed by noise reduction with Topaz Denoise AI: fortunately, both can be run in batch mode, since there were 78 frames to process!
I used Photoshop to prepare the gif, with a curves layer to create the solar eclipse look, and a color dodge layer to create the red glow of Ha, completing the eclipse look.
I prepared the solar orientation graphic, shown at the video start, using
TiltingSun, which calculates the Sun’s angle with respect to N-S, which varies by time of year and your location on the Earth. Note this is not super accurate in that my camera is likely not exactly N-S aligned.
Comments