Solar Activity 02 Jun

[brianb]

A frustrating day with lots of hazy sun, three layers of thinnish broken cloud drifting at different speeds in different directions and bad seeing....

AR 11076 has developed nicely, the solar disc is otherwise generally similar to yesterday. The small "AR" south east of AR 11076 failed to develop.

1306 UT. Coronado PST CaK, prime focus, DMK41

1321 UT. Solarscope 60, x2 barlow, DMK21

1453 UT. WO FLT 110, Lunt solar wedge, x2 barlow, DMK21

1444 UT. WO FLT 110, Lunt B1200 CaK diagonal, x2 barlow, DMK21

AR 11073 continues to decline but note the very small bright plages to its north east in the Ha image:

1427 UT. Solarscope 60, x2 barlow, DMK21

1446 UT. WO FLT 110, Lunt B1200 CaK diagonal, x2 barlow, DMK21

The "crown" of filaments surrounding the north pole is still there but seems less contrasty than yesterday:

1436 UT. Solarscope 60, x2 barlow, DMK41

There is a nice prominence on the south west limb

1430 UT. Solarscope 60, x2 barlow, DMK21

and a much nicer one on the north east limb:

1429 UT. Solarscope 60, x2 barlow, DMK21

Transparency variable with drifting cloud, good when the clouds cleared but not for long. Seeing poor with considerable boiling. Temperature 18C, wind variable mainly NW force 2-3 (local sea breeze).

[Tim]

Thanks for these Brian, I have been watching it with interest as clouds allowed.

What is a solar wedge?

Thanks

Tim

[brianb]

What is a solar wedge?

Herschel wedge ... Lunt Solar Systems » Blog Archive » Lunt White Light Solar Wedge

[Andrew*]

Nice pics, Brian. I took a very quick look with the PST (mod in progress), and enjoyed the two prominences and ARs.

Andrew