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brianb

Solar Activity 14 Sep

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Greyed out yesterday; a showery day today with some sunny intervals but an increasingly strong wind between increasingly fierce showers.

Solar activity seems to be on the decline. The new AR in the northern hemisphere (AR 11107) seems to be dying off:

Sun-100914-1034-CaK.jpg

1034 UT. Coronado PST CaK, prime focus, DMK41

Sun-100914-1235-Ha.jpg

1235 UT. Solarscope 60, 0.5x focal reducer, DMK41

... and the major AR in the southern hemisphere, 11106, seems to be much less complex than it was on Sunday.

Sun-100914-1240-Ha-AR1106-X25.jpg

1240 UT. Solarscope 60, 2.5x Powermate, DMK21

I tried to image the AR in white light but was unable to use the FLT 110 at all because of the strong wind and even had trouble with the little 60mm Lunt scope:

Sun-100914-1353-WL-AR1106-X4.jpg

1353 UT. Lunt 60mm, Lunt solar wedge, 4x Imagemate, DMK21

There is a large brightish "hedgerow" prominence on the SE limb but otherwise only minor prominences.

Sun-100914-1242-Ha-promSE-X25.jpg

1242 UT. Solarscope 60, 2.5x Powermate, DMK21

The patch of interesting filaments in the north western sector persists:

Sun-100914-1241-Ha-filaNW-X25.jpg

1241 UT. Solarscope 60, 2.5x Powermate, DMK21

Transparency good in small gaps between showers. Seeing moderate but largely moot due to wind vibration issues. Temperature 14C, wind NW force 5 increasing 6-7 gusting gale 8.

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Excellent photos and superb summary of the features. You certainly lucked out getting those great images with the wild weather closing in!

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