As promised, a few more images from my 13Apr observing session. The lovely AR12529 still front and centre!
(H beta is a little "ratty" as I, once again, was not careful about centering this spectral line in the field of view. Extra processing was required to compensate for very bad exposure.)
More data to process yet, so stay tuned.
Cheers.
Peter.
13April SHG images: Sol in 4 lights.
- marktownley
- Librarian
- Posts: 42550
- Joined: Tue Oct 18, 2011 5:27 pm
- Location: Brierley Hills, UK
- Has thanked: 20819 times
- Been thanked: 10489 times
- Contact:
Re: 13April SHG images: Sol in 4 lights.
Superb Peter! I'd love to see some 'sodium suns' if you can at any point. Very curious to see what is possible at this wavelength as it is within the passband of my HaT ERF. Daystar make a Na filter...
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!
- Merlin66
- Librarian
- Posts: 3972
- Joined: Tue Dec 13, 2011 1:23 pm
- Location: Junortoun, Australia
- Has thanked: 174 times
- Been thanked: 619 times
- Contact:
Re: 13April SHG images: Sol in 4 lights.
Mark,
You'll probably find it's cheaper to build a "multi-wavelength", "multi-bandwidth" SHG than buy a dedicated Na filter!! ;-)
You'll probably find it's cheaper to build a "multi-wavelength", "multi-bandwidth" SHG than buy a dedicated Na filter!! ;-)
"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
-
- Way More Fun to Share It!!
- Posts: 2033
- Joined: Sat Nov 24, 2012 2:33 pm
- Has thanked: 57 times
- Been thanked: 1204 times
- 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: 13April SHG images: Sol in 4 lights.
Thanks for your comments, everyone.
Mark: There's a sodium image here http://solarchat.natca.net/viewtopic.php?f=8&t=18063.
Truth be told, this image was taken slightly off band where,
I'm presuming, the Doppler effect played a role in the observed surface mottling. At the moment, I'm working up my 13April sodium data to produce a surface dopplergram. Unless you're working with a very narrow bandpass, I'd expect the sodium image to look like a continuum, white light image. I don't think that the Daystar filter offers such a narrow bandpass.
Cheers.
Peter.
Mark: There's a sodium image here http://solarchat.natca.net/viewtopic.php?f=8&t=18063.
Truth be told, this image was taken slightly off band where,
I'm presuming, the Doppler effect played a role in the observed surface mottling. At the moment, I'm working up my 13April sodium data to produce a surface dopplergram. Unless you're working with a very narrow bandpass, I'd expect the sodium image to look like a continuum, white light image. I don't think that the Daystar filter offers such a narrow bandpass.
Cheers.
Peter.
- Montana
- Librarian
- Posts: 34722
- Joined: Mon Oct 17, 2011 5:25 pm
- Location: Cheshire, UK
- Has thanked: 17974 times
- Been thanked: 8906 times
- DSobserver
- Almost There...
- Posts: 582
- Joined: Sun Feb 19, 2012 2:36 pm
- Location: FRANCE
- Been thanked: 19 times
- Carbon60
- Way More Fun to Share It!!
- Posts: 14314
- Joined: Wed Mar 07, 2012 12:33 pm
- Location: Lancashire, UK
- Has thanked: 8559 times
- Been thanked: 8291 times
Re: 13April SHG images: Sol in 4 lights.
Fabulous work, Peter.
Stu.
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/
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/