Saturday Morning 24/4

[Roy Challen]

Very good morning session. After warming the scope up, I saw the AR roughly central to the disc. Two spots were immediately obvious, with the third (actually a pair), less obvious, forming an approximately isosceles triangle. During my observations, the region formed by the shortest edge of the triangle seemed to develop a ring around it. Roughly oval, with the spots at either end, the central region seemed to grow brighter over the duration of this session. If this is true, then that is amazing - to witness real-time change over a short timescale, from 150-odd million km away. Checking on GONG afterwards, the feature is distinct on the image from Learmonth, but less so on the image from Udaipur taken earlier.

The Shark Fin Prom from yesterday has evolved into what looks to me to resemble a Ford Transit van. Very pleased that my drawing closely resembles GONG images.

[Highburymark]

Thanks for the report and nice drawing Roy. Lots of impressive filaments today, but the main prom is the highlight - turning into a filaprom.