Sun activity of Nov. 18 & 19

[krakatoa1883]

There has been a modest activity in the past few days. AR12687 started as an interesting group but quickly vanished leaving almost nothing to be seen in WL, however it is still a bright region in Ca-H. Luckily some interesting prominences and filaments were visible in H-alpha.

[marktownley]

Nice captures there Raf!

[Montana]

Wow! super pictures Raf the calcium K close up is really special. It is amazing how the two spots just vanished a day later.

Alexandra

[ffellah]

An excellent set of images, Raf....

Franco

[xn44]

Good images!

[eroel]

Raffaello:
Beautifully clean images.
Regards,
Eric.

[krakatoa1883]

Thanks to you all for appreciation. That small inexpensive newtonian I am using for Ca-H really surprised me (and the Quark too, given my negative experience with the H-alpha version) I am planning to modify a larger mirror for the same purpose.

[ffellah]

Raf: nice to see your two scopes and a bit of Milano, my hometown, in the background....

Franco

[krakatoa1883]

Really ? Happy to hear this, Franco.

I forgot to mention that my scope has a de-aluminized primary mirror, I would never recommend to use the Quark with an ordinary newtonian.

[marktownley]

Nice scope delivering positive results!