Sunspot group 17th Dec 2021
- Carbon60
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Sunspot group 17th Dec 2021
Unexpectedly clear skies gave me an opportunity to image the fabulous sunspot group this morning. The conditions were not ideal (lots of contrails, haze and poor seeing) but I figured I'll take what I can get, given the paucity of good weather days these past few weeks.
I also took a few images in CaK and Ha. The Ha FD was particularly difficult with variability between panes. I had to settle for an inverted view with additional processing to try to even out some of the different panes.
First up is the sunspot group at 430nm:
20211217_430nm_WL_Group_Mono by Stuart Green, on Flickr
20211217_430nm_WL_Group_colour by Stuart Green, on Flickr
Here's a CaK FD four pane, which just about worked given the conditions. A second set of four looked really patchy.
20211217_CaK_FD_Mono by Stuart Green, on Flickr
20211217_CaK_FD_colour by Stuart Green, on Flickr
....and the Ha quadrant and FDs
20211217_Ha_Quadrant_Mono by Stuart Green, on Flickr
20211217_Ha_Quadrant_colour by Stuart Green, on Flickr
20211217_Ha_FD_Inverted_Mono by Stuart Green, on Flickr
20211217_Ha_FD_Inverted_Colour by Stuart Green, on Flickr
I can't believe how lucky I was with the weather (even with poor conditions) given the forecasts were for clouds all week.
Thanks for looking.
Stu.
I also took a few images in CaK and Ha. The Ha FD was particularly difficult with variability between panes. I had to settle for an inverted view with additional processing to try to even out some of the different panes.
First up is the sunspot group at 430nm:
20211217_430nm_WL_Group_Mono by Stuart Green, on Flickr
20211217_430nm_WL_Group_colour by Stuart Green, on Flickr
Here's a CaK FD four pane, which just about worked given the conditions. A second set of four looked really patchy.
20211217_CaK_FD_Mono by Stuart Green, on Flickr
20211217_CaK_FD_colour by Stuart Green, on Flickr
....and the Ha quadrant and FDs
20211217_Ha_Quadrant_Mono by Stuart Green, on Flickr
20211217_Ha_Quadrant_colour by Stuart Green, on Flickr
20211217_Ha_FD_Inverted_Mono by Stuart Green, on Flickr
20211217_Ha_FD_Inverted_Colour by Stuart Green, on Flickr
I can't believe how lucky I was with the weather (even with poor conditions) given the forecasts were for clouds all week.
Thanks for looking.
Stu.
Last edited by Carbon60 on Fri Dec 17, 2021 6:52 pm, edited 1 time in total.
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/
- marktownley
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Re: Sunspot group 17th Dec 2021
Very nice indeed Stu, i'm hoping the clear patches rotating in this area of high pressure we have at the moment will head my way. Just grey today here, glad it cleared for you.
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Re: Sunspot group 17th Dec 2021
Many thanks, Mark. I have my fingers crossed for you.
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: Sunspot group 17th Dec 2021
Debating weather your captures are the best so-far of this long AR complex as well as including the two northern AR's Stu.
My answer is the best so far and along with Alexandra's excellent CaK captures of today/17th, are good enough for an accurate count of the number of spots - if you get a chance to beat James ???
Thanks for sharing and await with patience to hear your reply...
Terry
My answer is the best so far and along with Alexandra's excellent CaK captures of today/17th, are good enough for an accurate count of the number of spots - if you get a chance to beat James ???
Thanks for sharing and await with patience to hear your reply...
Terry
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Re: Sunspot group 17th Dec 2021
53 in CaK, I think, Terry.EGRAY_OBSERVATORY wrote: ↑Fri Dec 17, 2021 7:31 pm Debating weather your captures are the best so-far of this long AR complex as well as including the two northern AR's Stu.
My answer is the best so far and along with Alexandra's excellent CaK captures of today/17th, are good enough for an accurate count of the number of spots - if you get a chance to beat James ???
Thanks for sharing and await with patience to hear your reply...
Terry
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: Sunspot group 17th Dec 2021
Thanks Stu and you are so far the winning-team, as earlier today was 67 and this evening down to 63, but keep counting as more is expected very soon - over the border of the S.E. & the N.E. Limb too.
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Re: Sunspot group 17th Dec 2021
are the prizes, so if you don't like those cuddly hamsters, then maybe a !!
We'll even get Alexandra to present them with a
Terry
We'll even get Alexandra to present them with a
Terry
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Re: Sunspot group 17th Dec 2021
WoW Stuart!! These are simply stunning! Very nice detail and beautiful coloration! The Sun is excellently well presented in your images. I have a 430nm filter and I should use it more!!
And Terry, I have a hamster and cats!!
James
And Terry, I have a hamster and cats!!
James
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Re: Sunspot group 17th Dec 2021
Superb captures, Stu. You were able to pull amazing details, and the mosaic looks great, very even.
Franco
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Re: Sunspot group 17th Dec 2021
EGRAY_OBSERVATORY wrote: ↑Fri Dec 17, 2021 11:10 pm Well James - what's a few more to add to your menagerie
Terry
Oh yeah.
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Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
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Re: Sunspot group 17th Dec 2021
Stu,
I really like the last inverted Ha full disk image. I love how the filaments stand out on the disk.
James
I really like the last inverted Ha full disk image. I love how the filaments stand out on the disk.
James
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Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
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Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
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Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
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Re: Sunspot group 17th Dec 2021
Great results in spite of your conditions Stu. Your White Light captures never cease to amaze me.
Martin
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Re: Sunspot group 17th Dec 2021
Wow!! what a WL image if only we could have more clear skies I was hoping to see the comet and Venus tonight but miserable cloud prevails.
Alexandra
Alexandra
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Re: Sunspot group 17th Dec 2021
Many thanks for your kind comments, everyone.
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: Sunspot group 17th Dec 2021
You did a wonderful job overcoming the less than ideal conditions! Great work, Stu!
Best regards,
Arne
Best regards,
Arne
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Re: Sunspot group 17th Dec 2021
Many thanks, Arne and Eric. Much appreciated.
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/