shg may 14 2017

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6 21 caH

fc2_save_2017-06-21-174141-0000cahk_000h.jpg (124.03 KiB) Viewed 2530 times

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6 21
aluminum

fc2_save_2017-06-21-174141-0000cahk_001al.jpg (99.86 KiB) Viewed 2530 times

[marktownley]

Good captures John!

[highfnum]

4 july k line fairly quiet

fc2_save_2017-07-04-140337-0000hk_001k.jpg (108.54 KiB) Viewed 2432 times

[Montana]

Not as quiet as it could be, fantastic image
Alexandra

[highfnum]

going quiet again cah

fc2_save_2017-07-19-180324-0000hk_000h.jpg (110.9 KiB) Viewed 2351 times

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Al

fc2_save_2017-07-19-180324-0000hk_001al.jpg (105.61 KiB) Viewed 2351 times

[Montana]

Great shots but quiet!
I guess this isn't the 14th May?

Alexandra

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7 26 caH

fc2_save_2017-07-26-102846-0000hk_000h.jpg (121.66 KiB) Viewed 2307 times

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hbeta

fc2_save_2017-07-26-101934-0000hb_000.jpg (120.89 KiB) Viewed 2307 times

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cak

fc2_save_2017-07-26-102846-0000hk_001k.jpg (119.88 KiB) Viewed 2307 times

[Montana]

Some nice active regions developing, great shots

Alexandra

[highfnum]

thx Alexandra
got to show off SHG at stellafane
you can see it in
video at appprox 3.50 mark
https://www.youtube.com/watch?v=4g_2bVPrwIk

[Montana]

Wow! I have never seen so many telescopes in one place, great to see yours too

Alexandra

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hbeta

fc2_save_2017-07-30-131245-0000hb_000.jpg (121.38 KiB) Viewed 2219 times

[highfnum]

in Henry King "the history of the telescope" page 322 at bottom
he mentions "dark hydrogyn flocculi" at Hgamma line

I notice that except for H-alpha an active region looks dark in other hydrogen lines
do you guys know why?

here is comparison caH a small active region

centercah.jpg (47.03 KiB) Viewed 2219 times

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hbeta

hbetacenter.jpg (29.06 KiB) Viewed 2219 times

[Montana]

It does look like the reverse, nice pics but I have no idea about the physics


Alexandra

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a few thin clouds causing this variation 8 3 hbeta

fc2_save_2017-08-03-170132-0000hb_000.jpg (112.27 KiB) Viewed 2178 times

[Montana]

Nice shot of the big spot, the plage seems to be dark apart from a bright ring round the spot.


Alexandra

[marktownley]

You get nice images John!

[highfnum]

thx
Montana and Mark true solar fans
comparison ha and hb
of sunspot area
ha

ha22b.jpg (40.26 KiB) Viewed 2114 times

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hb

hb26b.jpg (42.94 KiB) Viewed 2114 times

[taratasy]

Now try to get a very strong flare in all hydrogen lines
I am curious to see how bright it would appear in H-gamma, H-delta etc

[highfnum]

well did a comparison
h-alpha

fc2_save_2017-08-09-111421-0000ha_000.jpg (138.6 KiB) Viewed 2065 times