Friday, 20 June 2014

Ha Full Disk 20th June

On the last day of northern spring, with the summer solstice occurring tomorrow our star was putting on it's best views in hydrogen alpha wavelengths today.  The suns southern jet stream was busy with activity with many small filaments.  None of them could come close to competing in size with the one that is in the northern hemisphere.  This long cloud of cooler plasma is held aloft above the surface of the sun by magnetic fields.  There were also a couple of nice filaproms visible on either limb too.  This shot was taken with the Coronado DS40 at 560mm focal length with the DMK31 camera.  I hope tomorrows summer solstice holds clear skies so I get some imaging in then too!