Greetings Everyone.
I wanted to do some house cleaning before the beginning of 2018 and finish processing some spectroheliograms that have been, more or less, lying dormant since June. Here are images at four more wavelengths to accompany my 20Jun2017 hydrogen results in a previous thread.
Some noteable features:
CN Band (3883.3A): Photospheric view. Faculae are visible with good contrast.
CaK3 (3933.7A): View of the calcium chromosphere at K line centre. The chromospheric network is obvious. Filaments are clearly visible and there's a lot of activity on the limb. Note the detaching prom at the active region on the eastern limb along with a series of hedgerow proms. There's also a dim arch prom on the NW part of the limb.
HeD3 (5875.6A): Filaments are clearly visible in the "helium chromosphere". There is enhanced helium absorption in all active regions. Prominences and the bright helium limb are visible.
NaD2 (5890.0A): Photospheric view. Faculae are visible. Mottling across the disk is probably associated with supergranulation.
Hopefully next year is more productive, although the Sun will probably be quieter.
Happy New Year.
Peter.
20Jun2017 Spectroheliograms: Cleaning House!
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Re: 20Jun2017 Spectroheliograms: Cleaning House!
A nice bit of clearing, Peter. Interesting comparisons.
Happy 2018.
Stu.
Happy 2018.
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/
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Re: 20Jun2017 Spectroheliograms: Cleaning House!
These are amazing, I think my favourite is the Helium
That reminds me, I still have a lot of house cleaning to do
Alexandra
That reminds me, I still have a lot of house cleaning to do
Alexandra
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Re: 20Jun2017 Spectroheliograms: Cleaning House!
Fantastic set Peter! My favourite is the CaK.
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: 20Jun2017 Spectroheliograms: Cleaning House!
Hi Peter,
The filaments are great in Ca K3 and HeD3 !
Cheers
The filaments are great in Ca K3 and HeD3 !
Cheers
Christian Viladrich
Co-author of "Planetary Astronomy"
http://planetary-astronomy.com/
Editor of "Solar Astronomy"
http://www.astronomiesolaire.com/
Co-author of "Planetary Astronomy"
http://planetary-astronomy.com/
Editor of "Solar Astronomy"
http://www.astronomiesolaire.com/