Current AR's in High Res, Full Disc | Jan 9th 2020

[MalVeauX]

Heya,

Interesting to see three plages after such a stark period of inactivity. There's two Cycle 25 polarity regions and a Cycle 24 polarity region that came around the limb just the other day. The new Cycle 25 region, perhaps soon to be called AR2756 has visible umbra with light bridges, but is already decaying fast and will of course rotate out of view even sooner. Still, plenty to see in HA of course! I had to image in the early afternoon due to clouds, so I was imaging from around noon to 1pm which is typically really bad seeing conditions for me, however today it was not as bad and I was able to get some ok data despite the conditions. Seeing managed to get to around 1.4 arc-seconds a few times. I've provided my SSM graph to show seeing fluctuation, what's interesting is the fluctuation to better seeing conditions almost seemed to have a small spiked pattern today, in that there were moments of good seeing every 7~8 minutes oddly. Full disc is a mosaic.

Colored:

B&W:

SSM Graph:

Full Disc:

Earth Scale:

Equipment:

C8 Edge + Aries D-ERF + Baader CCD-IR Block Filter (ERF #2)
PST Etalon + BF10mm + ASI290MM (HA)
Baader 610nm Filter + ASI290MM (Photosphere)

ED80 (masked to 52mm F11) + Baader CCD-IR Block Filter (ERF)
PST Etalon + BF10mm + ASI290mm (HA, full disc, mosaic of 6 panels)

Very best,

[Davey-T]

Excellent images Martin, brightened up a grey UK day.

Dave

[vineyard]

Brilliant.  Here's all I managed as a quick 1-shot w Lightroom!

 

[Pete Presland]

A beautiful set of images, good to see some new cycle activity.

[niallk]

Wonderful shots!

On 09/01/2020 at 21:15, MalVeauX said:

There's two Cycle 25 polarity regions and a Cycle 24 polarity region that came around the limb just the other day.

This is a very interesting comment - could I ask you to elaborate and explain this briefly please - ie how the end of one cycle and the start of another is determined? 

Thanks!!

-Niall

Edit: I read up on Google  Zeeman effect gives polarity, and I read about lattitude trends too.

Edited January 12, 2020 by niallk