AR12396 is now close to the SW limb, but its activity is still going strong.
The large filament that comes out to the south from the main spot has strengthened, and many dark filaments have showed up to the north.
The "white light" image is actually taken through the same H-alpha filters, but with the temperature control turned off, leaving a semmingly "white-light" appearance.
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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發表於 2015-8-13 11:31:03