15 July Spectroheliograms

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p_zetner
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15 July Spectroheliograms

Post by p_zetner » Mon Jul 16, 2018 6:44 pm

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.
Result of CaK Final 2018-07-15-102346_frame_siz.png
Result of CaK Final 2018-07-15-102346_frame_siz.png (260.94 KiB) Viewed 262 times
Result of Halpha Final_2018-07-15-105715_frame_siz.png
Result of Halpha Final_2018-07-15-105715_frame_siz.png (200.45 KiB) Viewed 262 times
Last edited by p_zetner on Mon Jul 16, 2018 6:58 pm, edited 1 time in total.

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Carbon60
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Re: 15 July Spectroheliograms

Post by Carbon60 » Mon Jul 16, 2018 6:56 pm

Good images, Peter. Do the horizontal lines come from the edges of the slit?

Stu.
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p_zetner
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Re: 15 July Spectroheliograms

Post by p_zetner » Mon Jul 16, 2018 7:00 pm

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.

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Re: 15 July Spectroheliograms

Post by marktownley » Tue Jul 17, 2018 5:06 am

These are excellent views Peter, thanks for sharing. Love to see a He disk too.
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Montana
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Re: 15 July Spectroheliograms

Post by Montana » Wed Jul 18, 2018 9:29 am

Some super images here, really enjoyed these :bow
Alexandra

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