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Solar Activity 10 Sep


brianb
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The forecast was much better than the actual weather today - just a couple of sunny intervals in the afternoon seperated by a cloudy spell, and the seeing was poor, especially later when cirrocumulus was spreading in.

Solar disk blank in white light except for a small faint patch of faculae in the north west.

Overviews:

Sun-100910-1325-CaK.jpg

1325 UT. Coronado PST CaK, prime focus, DMK41

Sun-100910-1333-Ha.jpg

1333 UT. Solarscope 60, 0.5x focal reducer, DMK41

Disk surface activity is mostly of the filamentary variety and concentrated in the northern hemisphere. A large dense filament is near the meridian

Sun-100910-1505-Ha-filaNC-FLTX25.jpg

1505 UT. WO FLT 110, Solarscope SF-100, 2.5x Powermate, DMK21

Filaments and a minor plage in the north western sector. Sorry about the missed bit:

Sun-100910-1503-Ha-discNW-FLTX25.jpg

1503 UT. WO FLT 110, Solarscope SF-100, 2.5x Powermate, DMK21 (2 frame mosaic; 0.8x resize)

Prominences numerous but moderate in size. I was unable to image the spikes in the SE and the proms in the NE sector due to cloud cover.

Sun-100910-1507-Ha-promNNW-FLTX25.jpg

1507 UT. WO FLT 110, Solarscope SF-100, 2.5x Powermate, DMK21

Sun-100910-1510-Ha-promNW-FLTX25.jpg

1510 UT. WO FLT 110, Solarscope SF-100, 2.5x Powermate, DMK21 (2 frame mosaic)

Sun-100910-1512-Ha-promSE-FLTX25.jpg

1512 UT. WO FLT 110, Solarscope SF-100, 2.5x Powermate, DMK21

Transparency mostly good but with interference from drifting low cloud & encroaching cirrocumulus later. Seeing poor with considerable boiling, expecially near cirrocumulus. Temperature 19C, wind W force 3.

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