Sun in ca2H line from the wings to the center

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fulvio.mete
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Sun in ca2H line from the wings to the center

Post by fulvio.mete »

My last work, on last may, 6, of sun imaging in Ca2 H line at 3968 A.
The device is the usual Hires spectroscope VHIRSS in digital spectrohelioscope mode.

http://www.lightfrominfinity.org/VHIRSS/VHIRSS.htm
http://www.lightfrominfinity.org/VHIRSS ... images.htm
I first obtained two images, one from 50 frames of 0.028 A each for a bandpass of 1.44 A, about the whole line, and another of seven frames, for a 0.2 A bandpass, at the very center of the line.The control image was from Meudon Spectroheliograph.
The 50 frames were after joint i a short movie that shows the dramatic change of appearance of the sun passing from the wing to the center of the line
The movie is a t the following link :

https://drive.google.com/file/d/0B0hkJo ... sp=sharing

Note) if you get a window "file unavailable" simply close the window to watch the film.


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Re: Sun in ca2H line from the wings to the center

Post by Carbon60 »

Very interesting work and nicely presented.

That's a great piece of kit.

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/
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Re: Sun in ca2H line from the wings to the center

Post by fulvio.mete »

Very interesting work and nicely presented.

That's a great piece of kit.
Thanks, Stu, glad you appreciated my work


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Re: Sun in ca2H line from the wings to the center

Post by swisswalter »

Hi fulvio

welcome to that wonderful site, have fun in the sun.

Very dramatic how the contrast is rising and fading, thanks for sharing


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 :)

from 7 am - 7 pm http://www.nanosys.ch

from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa ;)
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Re: Sun in ca2H line from the wings to the center

Post by fulvio.mete »

Very dramatic how the contrast is rising and fading, thanks for sharing
Thanks, Swisswalter, there is another addendum, that one can see a scan of solar cromosphere from low (wings) to higher zone (center line) where the abundance of ionized calcium show its better sensitivity to the magnetic fields of active regions and the line pass from absorbtion to emission, as shown in the image here joint.
Attachments
Ca2 H_profile_comp.jpg


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Re: Sun in ca2H line from the wings to the center

Post by p_zetner »

Very nice, Fulvio! Welcome to the site.

With slightly higher resolution, one can see the double reversal in the line core.

http://solarchat.natca.net/viewtopic.php?f=8&t=8401

There is some evidence of it in the spectrum image you have presented.

Cheers.
Peter.


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Re: Sun in ca2H line from the wings to the center

Post by swisswalter »

Hi Fulvio

thanks for the addition


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 :)

from 7 am - 7 pm http://www.nanosys.ch

from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa ;)
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Re: Sun in ca2H line from the wings to the center

Post by Derek Klepp »

A lot more involved than with my solar scopes but a greater depth of information from the one instrument.Thanks for the links a very interesting read.


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Re: Sun in ca2H line from the wings to the center

Post by Montana »

Fantastic video :bow :bow :bow

Alexandra


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Re: Sun in ca2H line from the wings to the center

Post by fulvio.mete »

With slightly higher resolution, one can see the double reversal in the line core.

viewtopic.php?f=8&t=8401
Very interesting your work too, Peter,
Fulvio


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Re: Sun in ca2H line from the wings to the center

Post by fulvio.mete »

A lot more involved than with my solar scopes but a greater depth of information from the one instrument.Thanks for the links a very interesting read
Fantastic video
Thanks to Derek and Alexandra for their comment
Fulvio


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Re: Sun in ca2H line from the wings to the center

Post by marktownley »

Cool stuff! Welcome to this crazy place!


Image
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: Sun in ca2H line from the wings to the center

Post by fulvio.mete »

Cool stuff! Welcome to this crazy place!
Thanks, Mark: nice Ha images on your site, a see you got a modded 100 mm PST like mine.


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Re: Sun in ca2H line from the wings to the center

Post by Wah »

fulvio.mete, the VHIRSS page was the most important page that help me to design my SHG!
:band :band :band


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Re: Sun in ca2H line from the wings to the center

Post by fulvio.mete »

fulvio.mete, the VHIRSS page was the most important page that help me to design my SHG!
Glad it can help you !


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