By Dr Ski | 2019-05-12
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On 05/12/2019 10:00 am by Dr Ski | Valencia, Philippines
A nice filament has formed below AR2741. The etalon filter on the Hydrogen-alpha scope is tuned to highlight features on the chromosphere, rather than prominences around the Sun's limb (that filament would be a prominence if it were on the limb).
Canon IXUS185, Coronado P. S. T.
EP at 26x
1/20s, ISO400
