Hello Everyone.
Managed to set up the spectroheliograph for its first outing of 2018. Windy conditions made the effort a bit challenging and you can see the effect in the H alpha image.
My spectroheliograms in H and Ca are mostly processed. I might yet tweak the H alpha a little to remove some of the artifacts and I also want to look at some off-band images for both lines. I also captured some HeD3 data but have yet to process. I'll be curious to see if there is any evidence of He chromospheric structure associated with the weak AR.
Here are images in calcium (K3) and hydrogen alpha (line centre).
Cheers, Peter.
15 July Spectroheliograms
- p_zetner
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15 July Spectroheliograms
Last edited by p_zetner on Mon Jul 16, 2018 6:58 pm, edited 1 time in total.
- Carbon60
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Re: 15 July Spectroheliograms
Good images, Peter. Do the horizontal lines come from the edges of the slit?
Stu.
Stu.
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/
- p_zetner
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Re: 15 July Spectroheliograms
Hi Stu.
Thanks. They come from irregularities in the slit linearity and dust in the slit, mostly the latter. Need to clean for next time!
Cheers, Peter.
Thanks. They come from irregularities in the slit linearity and dust in the slit, mostly the latter. Need to clean for next time!
Cheers, Peter.
- marktownley
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Re: 15 July Spectroheliograms
These are excellent views Peter, thanks for sharing. Love to see a He disk too.

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!
- Montana
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Re: 15 July Spectroheliograms
Some super images here, really enjoyed these 
Alexandra

Alexandra
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