Solar Activity 10 Jun

[brianb]

An interesting day with (for once) a good transparent sky. Unfortunately I was not able to make full use of it due to having to seek emergency dental treatment.

Highlights are the three active areas - all in the south west sector - and the huge "suspended" prominence on the north west limb, which I have documented in seperate threads.

0829 UT. Coronado PST CaK, prime focus, DMK41

0835 UT. Solarscope 60, 0.5x focal reducer, DMK41

Elsewehere, the filaments in the north west sector seem to be smaller in extent than previously:

0840 UT. Solarscope 60, 2.5x Powermate, DMK21

There is a row of interesting prominences stretching round the eastern and north eastern limbs:

0842 - 0850 UT. Solarscope 60, 2.5x Powermate, DMK21 (6 frame mosaic).

I imaged the north eastern prominences again in the afternoon:

1518 UT. Solarscope 60, 2.5x Powermate, DMK21

Transparency very good. Seeing (am) moderate, (pm) poor with significant boiling. Temp 17C, wind NE force 2-3.