2017 October 12 Sun
Today is the 4th consecutive spotless day since 2017 July 25..
Several prominences appear on the solar limb.
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 October 12 Sun
2017 October 12 Sun
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