PTS 發表於 2014-10-20 11:14:31

AR12192 should be naked-eye

The huge active region near the SE limb has been very active and actually gave a violent eruption on October 15, when it was still on the backside.
The spot has developed and should be visible with the naked eye.


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

PT
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