Heya,
Was cloudy and wet this morning. The clouds cleared up a little and there was a haze, but it was fairly static, so I figured I'd take a look. AR2719 has further developed and there's another visible umbra near it as the activity expands a bit, with a nice little filament near the umbra (that would look sweet from the side or near the limb!). The big fialment and previous proms have rotated around and there's a really huge long wispy filament stretching from the limb to nearly the center of the disc that is enormous (from the side, what an amazing prom it would be). Convection cells in near UV captured around AR2719 for comparison. One larger prominence remains on the limb with some other feinter minor ones, but I didn't have time for all of them. Captured with 152mm F8 refractor, Quark and for the wide FOV a focal reducer. The Cells were captured with a 370~395nm pass filter and a 3x barlow. Camera is ASI174MM.
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False color:
Very best,
AR2719 in HR, Convection Cells, Filament & Prom | Aug 23 2018
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Re: AR2719 in HR, Convection Cells, Filament & Prom | Aug 23 2018
All beautiful images, Marty, but I find the second one from the top an extremely good result for the scope/Quark combination you are working with.
Obviously conditions and very good processing also played a big part.
Franco
Obviously conditions and very good processing also played a big part.
Franco
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Re: AR2719 in HR, Convection Cells, Filament & Prom | Aug 23 2018
A very nice collection of images, Marty.
Stu.
Stu.
H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
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Re: AR2719 in HR, Convection Cells, Filament & Prom | Aug 23 2018
A super collection and I enjoyed the solar report
Alexandra
Alexandra
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Re: AR2719 in HR, Convection Cells, Filament & Prom | Aug 23 2018
Thanks all; seeing has been so bad lately, I've had to use a focal reducer almost every time!
Very best,
My seeing has been terrible compared to what it normally is, even compared to last summer, this year has just had the worst turbulence in a long time. I've had to lower my scale. But, that said, 6 inch aperture still resolves a lot more than smaller scopes, but I'm using a 0.5x focal reducer with it for that image, and flat calibration of course, giving me very bright views, low gain, 5ms exposure time to freeze the seeing, and lots of frames to then get the best few, that was a stack of 101 frames from 6000.
Very best,