2017 December 01 Sun - AR12689
An 1-hour break of the clouds allows me to observed in the afternoon. The solar disc is nearly featureless, in either white light or H-alpha.
Most of AR12689 is now on the backside, leaving one or 2 flares and the plasma stream seen as a broken filament.
No sunspot is visible.
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
2017 December 01 Sun - AR12689
2017 December 01 Sun - AR12689
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