SunSpots 2718 & 2719, Convection Cells, Prominences, Disc Mosaic | Aug 18th 2018

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MalVeauX
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SunSpots 2718 & 2719, Convection Cells, Prominences, Disc Mosaic | Aug 18th 2018

Post by MalVeauX » Sat Aug 18, 2018 6:15 pm

Hey all,

Woke up to a mostly clear sky, but the seeing was not great, so I had to keep the scale down. But that's ok, I still managed some decent data. I had to grab a lot of frames to even get a few to stack in the poor seeing. All of these were done with maximum gamma, 5ms time and only enough gain to get to around 80% histogram fill. I grabbed around 6000 frames on each feature to try and get somewhere around 31 to 101 to stack that are decent. I used the 152mm F8 refractor with a 0.5x focal reducer and the Quark for most of these. The convection cells were at full scale with the same refractor and a 3x barlow with a near UV filter. The ST80, masked to 60mm, with the Quark was used to do a mosaic of the disc.

Celestron 152mm F8 refractor + Quark + 0.5x Focal Reducer + ASI174MM (all HA)
Celestron 152mm F8 refractor + 370~395nm pass filter + 3x barlow + ASI174MM (convection cells)
Orion ST80 80mm F5 refractor (masked to 60mm) + Quark + ASI174MM (HA disc mosaic)
setup_08182018.jpg
setup_08182018.jpg (172.14 KiB) Viewed 229 times
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Convection Cells:

Image

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Hydrogen Alpha with the 152mm F8 refractor & 0.5x focal reducer:

Image

New sunspot, 2719, really interesting on the limb with some flaring:

Image

Image

Image

Image

+++++++++++++++++++++++++++++

Disc mosaic:

Image

White light disc for comparison (low resolution):

Image

Very best,

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Re: SunSpots 2718 & 2719, Convection Cells, Prominences, Disc Mosaic | Aug 18th 2018

Post by rsfoto » Mon Aug 20, 2018 2:10 am

Hi Marty,

Great images. Is 2719 official already ? I just opened Spaceweather.com and there it is not listed ...
regards Rainer

Observatorio Real de 14 San Luis Potosi Mexico

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Re: SunSpots 2718 & 2719, Convection Cells, Prominences, Disc Mosaic | Aug 18th 2018

Post by MalVeauX » Mon Aug 20, 2018 2:31 am

Probably not official; I haven't seen anything truly designate it yet. I may have jumped the gun, so to speak. But it has a visible umbra, unlike 2718 which has decayed already. This new AR is still active, flaring a bit, hopefully it will be designated, I don't think it's a previous AR nor relative to the AR2718, so hopefully it will receive designation!

Very best,

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Re: SunSpots 2718 & 2719, Convection Cells, Prominences, Disc Mosaic | Aug 18th 2018

Post by Carbon60 » Mon Aug 20, 2018 5:39 am

A nice crop of images, Marty.

Stu.
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/

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Re: SunSpots 2718 & 2719, Convection Cells, Prominences, Disc Mosaic | Aug 18th 2018

Post by Montana » Mon Aug 20, 2018 9:51 am

It is certainly 2719 now :) great images! I love the granulation :bow

Alexandra

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Re: SunSpots 2718 & 2719, Convection Cells, Prominences, Disc Mosaic | Aug 18th 2018

Post by rsfoto » Mon Aug 20, 2018 6:59 pm

MalVeauX wrote:
Mon Aug 20, 2018 2:31 am
Probably not official; I haven't seen anything truly designate it yet. I may have jumped the gun, so to speak. But it has a visible umbra, unlike 2718 which has decayed already. This new AR is still active, flaring a bit, hopefully it will be designated, I don't think it's a previous AR nor relative to the AR2718, so hopefully it will receive designation!

Very best,
Hi MArty,

Congratulations. Sunspot 2719 is alive. Just checked Spaceweather.com :lol:

:seesaw
regards Rainer

Observatorio Real de 14 San Luis Potosi Mexico

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Re: SunSpots 2718 & 2719, Convection Cells, Prominences, Disc Mosaic | Aug 18th 2018

Post by MalVeauX » Mon Aug 20, 2018 7:27 pm

Woo! Official! And it has several umbra, unlike 2718 did, this is a more interesting spot so far.

:band2

Very best,

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