spectroheliograms - eruption near AR2027

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Phil Rousselle
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spectroheliograms - eruption near AR2027

Post by Phil Rousselle » Wed Apr 02, 2014 8:11 pm

hi all
here is a H-alpha spectroheliogram (center of line) on 2014 april 2nd. We can see plages and filaments. There is a flare near AR 2027 but no filaments around it

Image

At another wavelength (H-alpha + 1.07A) we can see sunspots at photospheric level and filaments around AR2027. They appear because of spectral shift (up to 2A)

Image

The next image is a Dopplergram taken à H-alpha +/- 1.5 A showing hi-speed plasma motions (50 miles/s)

Image

cheers
Phil

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Re: spectroheliograms - eruption near AR2027

Post by p_zetner » Wed Apr 02, 2014 8:24 pm

Welcome Phil!

Great to see you here with your beautiful spectroheliograms.

The Dopplergram is interesting - very featureless aside from the one active region. I suppose this is because you've selected for high speeds with the +/-1.5A difference?

By the way, which colours distiinguish recession from approach?

Cheers.
Peter.

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Re: spectroheliograms - eruption near AR2027

Post by Peter Williams » Wed Apr 02, 2014 8:44 pm

Very interesting, thanks for sharing.
Beginner amateur astronomer, keen on solar astronomy.

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Re: spectroheliograms - eruption near AR2027

Post by Phil Rousselle » Wed Apr 02, 2014 9:17 pm

thank you

Peter, the dopplergram shows approaching matter in white (and black for recession)
As you said, in this range of speed, most of the solar disk seems "flat" and appears grey

Phil

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Re: spectroheliograms - eruption near AR2027

Post by Merlin66 » Wed Apr 02, 2014 9:38 pm

ABSOLUTELY FANTASTIC!!!!!!!!!!!!!!!!!!!!!!!
The quality of the SHG images and the great examples of what can be seen/ recorded and analysed in the "wings" is what it's all about.
At this level of expertise you are obtaining results far ahead of the usual illustrations in the "professional" books of just a few years ago!
Definitely a "coming of age" for the next generation SHG.
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.io/g/astronomicalspectroscopy  
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer

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Re: spectroheliograms - eruption near AR2027

Post by marktownley » Wed Apr 02, 2014 10:15 pm

Excellent! :cool:
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http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!

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Re: spectroheliograms - eruption near AR2027

Post by swisswalter » Thu Apr 03, 2014 4:23 am

Hi Phil

wonderful Job. Welcome to that wonderful site, Have sun , fun and post as much as you can
Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

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from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa ;)

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Re: spectroheliograms - eruption near AR2027

Post by Montana » Thu Apr 03, 2014 9:14 am

Wow!! these images are exceptional :bow :bow :bow and such incredible functional data too, well done and a very warm and sunny welcome :)

Alexandra

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Re: spectroheliograms - eruption near AR2027

Post by Wah » Thu Apr 03, 2014 4:31 pm

:bow :bow :bow :bow
Stunning details!

I have tried to reprocess the first one to reduce the horizontal bands, hope you don't mind.
Attachments
0402-Ha2.jpg

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Re: spectroheliograms - eruption near AR2027

Post by Phil Rousselle » Thu Apr 03, 2014 6:49 pm

Many thanks to all of you

Wah! I haven't done a complete processing but yours is very good. thanks
As you can see on 1st and nd images, sky was not clean. I hope to get better results soon and share again

Phil

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Re: spectroheliograms - eruption near AR2027

Post by Derek Klepp » Fri Apr 04, 2014 9:22 am

Thanks Phil we miss a lot in the wings

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Re: spectroheliograms - eruption near AR2027

Post by alex » Fri Apr 04, 2014 3:29 pm

Just amazing!

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Re: spectroheliograms - eruption near AR2027

Post by Carbon60 » Fri Apr 04, 2014 6:30 pm

Fantastic work, Phil!

I love this stuff; so very interesting.

Stu.
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