December Solar Challenge

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Montana
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December Solar Challenge

Post by Montana »

Post an image/sketch of a tree prominence you find on this Sun this December. We all know some proms are called hedgerow or tree proms as they appear to look very much like one. These are quiescent prominences.

For a bit of fun, the one that looks most like a Christmas tree can be SPOD on Christmas day :lol:

Let's see all these December trees and hedgerows :)

Alexandra


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Re: December Solar Challenge

Post by marktownley »

Nice idea! :D


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Re: December Solar Challenge

Post by torsinadoc »

Fun


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Re: December Solar Challenge

Post by Carbon60 »

Here's my effort. Not sure that it's a tree though.

Image20211202_Ha_Prom by Stuart Green, on Flickr

It's getting more and more difficult at this time of year in the north. Really quite unstable air and less well defined details with the extra air we're having to image through. Anyhow, some Sun is better than none :)

Stu.


H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
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Re: December Solar Challenge

Post by marktownley »

Good shot there Stu!


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Re: December Solar Challenge

Post by Radon86 »

Carbon60 wrote: Thu Dec 02, 2021 12:25 pm Here's my effort. Not sure that it's a tree though.

Image20211202_Ha_Prom by Stuart Green, on Flickr

It's getting more and more difficult at this time of year in the north. Really quite unstable air and less well defined details with the extra air we're having to image through. Anyhow, some Sun is better than none :)

Stu.
Hello Stu,

I was wondering about CaK imaging ? I saw info on the Baader Ca K line filter (1.25 inch filter) on the Baader website. Did not know how that would work with a normal white light set up (I only have Baader solar filters on the front end of a refractor), and no other filters. I dont have a solar wedge or continuum filters yet.

Is the Ca K line filter (looks just like a small filter with threads) about 1.25 inches diameter enough or do you need the full Daystar Ca K module costing over 1000 USD or GBP ? However, I then see Daystar has a Ca H module ? so are they looking at different lines ?

Badder K-line is about 279 GBP for the 2 inch version (less for 1.25 inch) and Daystar Ca H module is about 1070 GBP (+ you need other stuff and ERF)..

Magnus

https://imagesofoursun.wordpress.com/eq ... k-calcium/

Thanks.
Magnus


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Re: December Solar Challenge

Post by Carbon60 »

Hi Magnus,
I guess this should be discussed on the ‘this is Solarchat’ pages, but to provide a comment here, I would say you get what you pay for and the cheaper Baader filter option will not give a satisfactory result, assuming you’re interested in capturing chromospheric network details. The bandwidth of the Baader K-line is simply not narrow enough. I use a Lunt CaK module with an additional narrowband filter to tighten up the band pass.

You may have just sparked a debate as there are other favourable solutions.

Alexandra/Mark, please can this be moved to the main section?

Cheers

Stu.


H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
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Re: December Solar Challenge

Post by Radon86 »

Carbon60 wrote: Thu Dec 09, 2021 7:10 pm Hi Magnus,
I guess this should be discussed on the ‘this is Solarchat’ pages, but to provide a comment here, I would say you get what you pay for and the cheaper Baader filter option will not give a satisfactory result, assuming you’re interested in capturing chromospheric network details. The bandwidth of the Baader K-line is simply not narrow enough. I use a Lunt CaK module with an additional narrowband filter to tighten up the band pass.

You may have just sparked a debate as there are other favourable solutions.

Alexandra/Mark, please can this be moved to the main section?

Cheers

Stu.
Hi Stu,
Thanks for your input. I realised this Ca K imaging is too advanced for me at present. I have to do a lot of work in my day time job for the winter months, so will not be able to digest much, so apologies for taking up your time.

Magnus.


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Re: December Solar Challenge

Post by Montana »

just a note to me so I can find these again later :)
viewtopic.php?f=4&t=34173
viewtopic.php?f=4&t=34187

Alexandra


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Re: December Solar Challenge

Post by eroel »

Hi:
Here is my X´mas tree looking version of a protuberance.
Thanks for looking, it was taken with a 102mm f/7 Stellarvue working at f/28 with a Baader 4X telecentric plus an old Daystar T-Scanner 0.45A° Ha filter.
Regards,
Eric.
Sol del 11 de diciembre 2021-Stellarvue-Daystar-1az-tree protuberance.jpg
Sol del 11 de diciembre 2021-Stellarvue-Daystar-1az-tree protuberance.jpg (773.37 KiB) Viewed 1344 times


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Re: December Solar Challenge

Post by pedro »

Here is my contribution

Image
SUN (20211211) H-alpha. LUNT152, BF30, PGR GRASSHOPPER 3 GS3-U3-28S4M

Image
SUN (20211211) H-alpha. LUNT152, BF30, PGR GRASSHOPPER 3 GS3-U3-28S4M

Image
SUN (20211213) H-alpha (09:30 UTC). TV101 F/5.4, DS SM90II/SM60, BF30, PGR GRASSHOPPER 3 GS3-U3-28S4M


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Re: December Solar Challenge

Post by Martin_S »

Sorry folks, epic fail, my tree fell over.

Martin
H-alpha_101710_lapl4_ap1489.jpg
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Re: December Solar Challenge

Post by eroel »

Martin_
It looks like you did not water the tree.
Best regards, here I put another tree, hope it does not fall over.
Eric.
Sol del 12 de diciembre 2021-Stellarvue-Daystar-3pos-tree.jpg
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Re: December Solar Challenge

Post by MAURITS »

I'm back after about three weeks of renovating our house.
So much cloud in this period that it is impossible for me to see the sun...

I hope you see a kind of a tree in the older image, that's not a December sun. ;)

12_56_15 Grey.jpg
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Re: December Solar Challenge

Post by marktownley »

Great images from everyone here!


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Re: December Solar Challenge

Post by EGRAY_OBSERVATORY »

Welcome back from the renovations Maurits and an excellent image.
Thanks vm
Terry


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Re: December Solar Challenge

Post by DeepSolar64 »

The solar wind blew over the solar Christmas tree!

FallenChristmasTree!_SW_SMII90_12-26-21_JP.jpg
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Re: December Solar Challenge

Post by Montana »

Oh dear! ;) good to see you imaging James :)

Alexandra


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Re: December Solar Challenge

Post by DeepSolar64 »

Montana wrote: Mon Dec 27, 2021 4:13 pm Oh dear! ;) good to see you imaging James :)

Alexandra
Thanks Alexandra. I hope to do it again this coming weekend if the weather allows and it isn’t too cold.

James


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Re: December Solar Challenge

Post by fedele »

27.12.2021, Italy
Takahashi FC100DL, Baader Cool Ceramic , ND 3.0, Continuum 2"
ASI178mm,
Asistudio, AstroSurface
NO FLAT
270380716_10223391913100144_1570717649945771609_n.jpg
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Re: December Solar Challenge

Post by fedele »

is of December 2021 the my first Sun H-Alfa image and December is also the month I was born :-)

15.12.2021, matera (ITA)
Takahashi FC100DL, Daystar Quark Cromosphere, ASI 178MM, Tecnosky reducer 0,5x.
AsiStudio (20sec), AstroSurface
267852179_10223333754286210_1070590260758967637_n.jpg
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