2017 August 21 Sun - images for eclipse chasers
On the solar surface, AR12671 dominates the solar centre, extending more than 22 degrees longitude from east to west. and is very active with continuous flare activity.
Near the E limb, AR12672 is starting to emerge with strong flares after showing its firework yesterday.
Prominences are less active as compared from yesterday.
Telescope: AP Starfire EDT 155 mm f/9.
stopped to 50 mm (f/28) 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.
2017 August 21 Sun - images for eclipse chasers
2017 August 21 Sun - images for eclipse chasers
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Re: 2017 August 21 Sun - images for eclipse chasers
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