Spot 2699 will soon disappear – – – 15/02/2018

After a couple of days being clouded out, this morning was nice and clear. Spot 2699 is now approaching the receding limb.

Following recent discussions and comments, in this case I collected 5 images as 200 frame avis, 2 with barlow and 2 with focal reducer with the Lunt, swapped the 80mm onto the mount and then did a white light with the barlow. The whole process took 10 minutes from looking out of the window and seeing it was clear.

Spaceweather says:

“On Feb. 12th, the magnetic canopy of sunspot AR2699 exploded–for more than 6 hours. The slow-motion blast produced a C1-class solar flare and hurled a coronal mass ejection (CME) almost directly toward Earth.

The CME is expected to reach Earth on Feb. 15th. NOAA forecasters say there is a 60% chance of G1-class geomagnetic storms with isolated periods of stronger G2 storming.

The effectiveness of the CME could be enhanced by a stream of solar wind that was already en route to Earth when the sunspot exploded. The solar wind is flowing from a large wedge-shaped hole in the sun’s atmosphere. If the approaching CME sweeps up material from that stream, snowplow-style, it could strike Earth’s magnetic field with extra mass and potency.

Arctic sky watchers should be alert for auroras when the CME arrives. If the coming storm intensifies to category G2, observers in northern-tier US states from Maine to Washington could see auroras as well. Stay tuned for updates”

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