PTS 發表於 2017-1-30 17:15:19

AR12627 - 9 day evolution-1 (2017 Jan 19-20)

AR12627 first appear as a tiny flare on the NE limb on Jan 19.It has evolved into a large group with many sunspots and flares. Here are images from Jan 19-20.


Telescope: AP Starfire EDT 155 mm f/9.
stopped to 50 mm for disc images, with 4X telecentric lens (f/36) for closeups
filter: Solar Spectrum SO1.5/0.3A with CERF prefilter
Camera: Imperx 4M15
North is up, and east to the left.


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