Hello Everyone.
A final presentation of the 13Aug solar disk observed in four more wavelengths: a molecular band of CN (cyanogen radical) at 388.9 nm, and three (neutral) metal lines; Al at 396.1 nm (inspired by "highfnum" !), Ca at 422.7 nm and Mg at 518.4 nm. The contrast of these could probably be improved with wiser gamma settings in the future. I may have over-adjusted gamma to brighten the image somewhat in the dark line centres.
There's a notable trend of increasing "chromospheric" appearance of the solar disk as wavelength shortens to the violet. Sunspots (photospheric features) are strongly visible in the Mg image but progressively harder to see going through the series to the CN image. Maybe this trend is consistent with the fall-off of photospheric intensity with decreasing wavelength. Chromospheric features are swamped by photospheric light at longer wavelengths but less so in the violet.
Cheers.
Peter.
13Aug SHG: 3rd and final installment.
-
- Way More Fun to Share It!!
- Posts: 12900
- Joined: Wed Oct 19, 2011 10:02 am
- Been thanked: 171 times
-
- Way More Fun to Share It!!
- Posts: 2033
- Joined: Sat Nov 24, 2012 2:33 pm
- Has thanked: 57 times
- Been thanked: 1204 times
- DSobserver
- Almost There...
- Posts: 582
- Joined: Sun Feb 19, 2012 2:36 pm
- Location: FRANCE
- Been thanked: 19 times
- 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: 13Aug SHG: 3rd and final installment.
Impressive!
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!