Hello Everyone.
An opportunity for a relatively intensive SHG workout on July 30! I was able to image in CaII K (393.37 nm), CaI g (422.7 nm), H beta (486.13 nm), HeD3 (587.56 nm) and H alpha (656.28 nm) with a bandpass of about 0.2 Angstroms.
First, I present CaII K (393.37 nm), HeD3 (587.56 nm) and H alpha (656.28 nm) in comparison with images from the KIS ChroTel telescope (HeD3 is compared with the ChroTel He 1083 nm image):
Next, a comparison of a blue-wing CaII K image with the CaI g-line image. The CaI line is quite narrow so there is a significant contribution to the image from the wings of this line, hence, more of a photospheric image, as you get in the wings of the CaII K line.
Next, a comparison of H alpha with H beta. The proms, separately processed, have been added. There doesn't seem to be much of a similarity between H alpha and H beta but that changes if you image in the wings of the H alpha line. The NSO - SOLIS images in H alpha are generated in the line core and in the line wings. The "wings" image is very similar to H beta. Here's the link to these images:
http://solis.nso.edu/0/fdp/fdp_fulldisk.html
(I wasn't careful enough with my exposures to be able to image in the H alpha wings.)
Finally, three "spectral series" showing images taken at slightly different wavelengths within an absorption line. The numbers in each frame are the wavelength displacements from the line centre (judged by eye and designated by the "0.00"). Positive (negative) numbers indicate a red (blue) shift.
First, a CaII K disk spectral series:
Next, a CaII K prominence spectral series:
(The prominence study is interesting. There is a substantial component of this CaII prominence which is receding from us (red shifted with respect to line centre).)
Finally, a HeD3 disk spectral series:
Hope you enjoy!!
Peter.
30July2015 PZ SHG images.
- marktownley
- Librarian
- Posts: 42272
- Joined: Tue Oct 18, 2011 5:27 pm
- Location: Brierley Hills, UK
- Has thanked: 20435 times
- Been thanked: 10244 times
- Contact:
Re: 30July2015 PZ SHG images.
A stunning and very comprehensive set of images there Peter, you really are wetting my appetite for all this now!
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!
- DSobserver
- Almost There...
- Posts: 582
- Joined: Sun Feb 19, 2012 2:36 pm
- Location: FRANCE
- Been thanked: 19 times
Re: 30July2015 PZ SHG images.
Waouuuu!!!! Amazing job!
I'll be really thanksfull if youcan describe precisely how you manage HeD3 picture....
I'll be really thanksfull if youcan describe precisely how you manage HeD3 picture....
- Montana
- Librarian
- Posts: 34560
- Joined: Mon Oct 17, 2011 5:25 pm
- Location: Cheshire, UK
- Has thanked: 17667 times
- Been thanked: 8789 times
Re: 30July2015 PZ SHG images.
WoW!!! what an amazing presentation! The science in this info is outstanding.
All can say is I was thrilled to look through these, the CaK prom is fascinating, the Hbeta I have always thought looks like offband Halpha
Alexandra
All can say is I was thrilled to look through these, the CaK prom is fascinating, the Hbeta I have always thought looks like offband Halpha
Alexandra
- Merlin66
- Librarian
- Posts: 3970
- Joined: Tue Dec 13, 2011 1:23 pm
- Location: Junortoun, Australia
- Has thanked: 173 times
- Been thanked: 615 times
- Contact:
Re: 30July2015 PZ SHG images.
Peter,
An excellent presentation!
Well done.
An excellent presentation!
Well done.
"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
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
- p_zetner
- Way More Fun to Share It!!
- Posts: 1644
- Joined: Sun Mar 18, 2012 4:59 pm
- Location: Winnipeg, Manitoba, Canada
- Has thanked: 166 times
- Been thanked: 719 times
Re: 30July2015 PZ SHG images.
Thanks for your interest and your comments, everyone!
Thought I'd upload a compilation picture of the above posts .... six faces of the Sun.
It emphasizes a major attraction of spectroheliography ... easy imaging at multiple wavelengths.
Cheers.
Peter.
(Vincent: Please see my previous answer to your question: http://solarchat.natca.net/viewtopic.php?f=8&t=12392)
Thought I'd upload a compilation picture of the above posts .... six faces of the Sun.
It emphasizes a major attraction of spectroheliography ... easy imaging at multiple wavelengths.
Cheers.
Peter.
(Vincent: Please see my previous answer to your question: http://solarchat.natca.net/viewtopic.php?f=8&t=12392)
-
- Way More Fun to Share It!!
- Posts: 12900
- Joined: Wed Oct 19, 2011 10:02 am
- Been thanked: 171 times
Re: 30July2015 PZ SHG images.
Very infomative Peter I enjoyed reading this.Your final collage sums it all up nicely.