Sunspot in AR2734 Continues | + FD, Proms, Plages | in 6562.8A, March 7th 2019

[MalVeauX]

Heya,

Woke up to some clouds, but they went away... imagine that, around 9am or so there were some low stratus clouds, but then it cleared up by 0930 which was nice. Seeing was ok for a while, but deteriorated as it got closer to 11am, at which point, large scale became unusable. Following AR2734, the poles have elongated from each other since yesterday, but the visible umbra have diminished some. Another region near by is also churning with some interesting plages and fibrils. A couple of prominences are notable on the limb today compared to yesterday, a few larger but very feint ones. I managed to capture the largest one that was very feint lifting off as it broke into two pieces and the top of its large arch released it. Happened pretty quickly. Couldn't get anything usable in white light at large scale due to the poor seeing and the short wavelength I attempted (395nm). I realize I need to go longer on the wavelength to attempt anything right now at large scale, so I may have to get a loose 656nm filter for convection cells for now. My hopes were to add a 430nm G-band filter, but, with the seeing as it is like this, I don't think I'll be able to utilize it at large scale with my system under these seeing conditions and that's the only place G-band really shows off is under high resolution and large scale. So, maybe another day. Maybe it's time to add a Baader HA 35nm filter for my "white light." Anyhow, today's subject matter presented in B&W native, inverted and false color options. A few Earth scales provided for perspective.

AR2734

Plage & Fibrils

Lifting Prominence

Full Discs

Earth Scales

Equipment

C8 Edge HD SCT with Aires 200mm Tri-Band D-ERF
ST80 (masked to 60mm) Refractor
Baader UV/IR Block filter
Quark Chromosphere
ASi174MM + 0.5x Focal Reducer

Binoviewing visually just to see

FOV of the Quark at F42 then with the 0.5x focal reducer (you can note the minor vignetting). I pushed gamma down to make it easier to see and focus which required more gain. Otherwise, I can image at 0 gain which is nice.

Very best,

[David Smith]

Super set Marty. Typical, I'm away from home for a few days and some spots turn up!

[Davey-T]

Great set of images Martin, usual wet and windy here.

Dave

[SIDO]

Very nice, took a peek yesterday before it clouded over. Thanks for posting ? 

[Pete Presland]

Very nice set of images.