2018 March 13 Sun - filament and plages in the SW sector

各類觀測太陽的儀器介紹及太陽攝影 Solarmax
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2018 March 13 Sun - filament and plages in the SW sector

文章 PTS » 週二 13 3月, 2018 18:27

2018 March 13 Sun - filament and plages in the SW sector

The solar surface has been spotless since AR12670 turned to the backside on March 04, 2018.
The filament-plage assembly is just to the south-west sector of the disc centre, but activity has subsided.
The white light images are affected by clouds, otherwise they are spotless.

Telescope: AP Starfire EDT 155 mm f/9.
stopped to 80 mm (f/17.5) for disc images, with 4X telecentric lens (f/36) for closeups
filter: Solar Spectrum SO1.5/0.3A with CERF prefilter
Camera: ASI1600MM, 4656X3520 pixels (3.8 micron)
North is up, east is to the left.
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