Solar Activity 21 Apr

[brianb]

Dull, damp morning cleared around lunchtime. Sun remains generally fairly quiet.

1147 UT. PST CaK, prime focus, DMK41

The plage at the north east limb remains visible as faculae in white light. There is a tiny spot also detected in white light, but the feature shows up better in CaK:

1200 UT. Lunt 60mm, B1200 CaK diagonal, 2x barlow, DMK21

Not a lot of activity in Ha either:

1207 UT. Solarscope 60, 0.5x reducer, DMK41

Here's a close up of the plage / active area on the north east limb:

1210 UT. Solarscope 60, 2x barlow, DMK21

and a view of the large extensive but rather faint prominence on the limb a little to the south of the active area

1218 UT. Solarscope 60, 2x barlow, DMK41

Transparency fair, sky remained slightly milky, occasional thin drifting low/medium cloud too. Seeing bad with moderate boiling. Temperature 11C, wind N force 2-3.

[NickH]

The Cak just leaps out...superb