Solar granulation evolution
Taken by Sylvain Weiller on May 22, 2017 @
Jerusalem, Israel
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Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
Aperture: Unavailable
ISO: Unavailable
Date Taken: Unavailable
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Details:
Meade 10" astrosolar D 3.8, 720nm near IR filter, ASI174MM camera. Acquisitions with FireCapture started at local time 09:41 and ended at 11:15. SSMonitor recorded automatically SER files when seeing was not too bad. Registration of individual SER files with AS!3.
Of course aspect changes completely and without the sunspot there would be absolutely no way to align the frames ! Due to seeing changes I had to eliminate most of the frames ... only 11 kept out of 78 !
Result frames were registered with RegiStax5 using prefilters around the sunspot, saved as AVI then selected in VirtualDub, exported to PNGs, Cubed in StarMax, level and gamma in VirtualDub, before final conversion to GIF using PIPP.
Photographer's website:
No URL provided.
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