13Aug SHG: 2nd installment.

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p_zetner
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13Aug SHG: 2nd installment.

Post by p_zetner » Wed Aug 19, 2015 7:34 pm

Hello Everyone.

Here is a compilation of solar disk images in four wavelengths from my 13Aug SHG observing session.
(I have four more wavelengths yet to process and analyze!)

Spectral series through the H alpha and CaK absorption lines are also presented.
Note: The orientation of the disks in the spectral series is 180deg from the proper orientation.
Also, the designation of the line-centre image in each series was somewhat crudely done (by eye), so, subject to some error. This means that the numbers showing absolute wavelength offsets are not precise. They are precise in a relative sense.

Cheers.
Peter.
4line_mosaic_fin_frm_lbls_corr.png
Ha_092755_series_ARL7x7_proc_frm_sz_lbls.png
CaK_102116_series_ARL9x9_proc_frm_sz_lbls.png
Last edited by p_zetner on Wed Aug 19, 2015 9:57 pm, edited 1 time in total.

Derek Klepp
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Re: 13Aug SHG: 2nd installment.

Post by Derek Klepp » Wed Aug 19, 2015 9:29 pm

Thanks Peter the CaKs show a fair bit of activity

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Re: 13Aug SHG: 2nd installment.

Post by Merlin66 » Wed Aug 19, 2015 10:58 pm

Peter,
Well done mate!
Great spectroheliograms, very well presented.
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.yahoo.com/neo/groups/ast ... scopy/info
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer

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Re: 13Aug SHG: 2nd installment.

Post by marktownley » Thu Aug 20, 2015 7:03 am

Incredibly impressive Peter!
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: 13Aug SHG: 2nd installment.

Post by Merlin66 » Thu Aug 20, 2015 7:27 am

Mark et al,
One of the significant issues with etalons/ Lyot filters is being able to exactly determine the central wavelength being used -on band? off band? in the xxxA wings??
Not a real problem for digital SHG users. ;)
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.yahoo.com/neo/groups/ast ... scopy/info
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer

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Re: 13Aug SHG: 2nd installment.

Post by marktownley » Thu Aug 20, 2015 7:45 am

I'm taking your book away with me on holiday next week Ken for a 're-read', i'm getting close to this SHG malarky ;)
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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Carbon60
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Re: 13Aug SHG: 2nd installment.

Post by Carbon60 » Thu Aug 20, 2015 11:19 am

Cracking images, Peter and an excellent example of this methodology.

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Re: 13Aug SHG: 2nd installment.

Post by Montana » Thu Aug 20, 2015 11:52 am

The series through the wings is very interesting indeed, fabulous work :bow :bow :bow


Alexandra

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