neutral calcium 4227

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highfnum
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neutral calcium 4227

Post by highfnum » Thu Aug 18, 2016 11:56 pm

i saw image of this frequency form "Our Sun" by D Menzel page 143 figure 88
so I tried it came out as described in text "flocculi show up as veined streaks"
could use Wah! image capabilities to clean up a bit
neutral4227.jpg
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highfnum
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Re: neutral calcium 4227

Post by highfnum » Fri Aug 19, 2016 12:24 am

i turn up brightness
notice dark area on right
fc2_save_2016neutralcca4227.jpg
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DSobserver
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Re: neutral calcium 4227

Post by DSobserver » Fri Aug 19, 2016 8:02 am

They are 2 new sun spot

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Re: neutral calcium 4227

Post by highfnum » Fri Aug 19, 2016 9:21 am

Lucien d'Azambuja took photo in book
At Muedon observatory

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Montana
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Re: neutral calcium 4227

Post by Montana » Fri Aug 19, 2016 9:25 am

Fantastic! :bow
Alexandra

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taratasy
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Re: neutral calcium 4227

Post by taratasy » Fri Aug 19, 2016 9:54 am

Very interesting !

Please continue with other unexpected lines :)

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Re: neutral calcium 4227

Post by highfnum » Fri Aug 19, 2016 10:23 pm

thx guys
i did some close up of one of few regions that is hot
4227 compaed with caH caK
4227 neutral ca
neucad.jpg
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Re: neutral calcium 4227

Post by highfnum » Fri Aug 19, 2016 10:23 pm

cah
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Re: neutral calcium 4227

Post by highfnum » Fri Aug 19, 2016 10:25 pm

cak
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Spectral Joe
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Re: neutral calcium 4227

Post by Spectral Joe » Sat Aug 20, 2016 5:41 am

Here's a comparison from smoky Northern California, with correspondingly poor conditions:

Ca 4227
0819_Ca4227.jpg
0819_Ca4227.jpg (175.05 KiB) Viewed 2263 times
Ha
0819_Ha.jpg
0819_Ha.jpg (189.16 KiB) Viewed 2263 times
Overall transparency is less than 80%, with lots of scatter.
Observing the Sun with complex optical systems since 1966, and still haven't burned, melted or damaged anything.
Not blind yet, either!
Light pollution? I only observe the Sun, magnitude -26.74. Pollute that!

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Re: neutral calcium 4227

Post by highfnum » Sat Aug 20, 2016 8:11 am

Cool - cleaner images , verifies same heated area

in past there was some study of this wavelength
http://adsabs.harvard.edu/full/1935MNRAS..95..742R

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Re: neutral calcium 4227

Post by marktownley » Sun Aug 21, 2016 8:09 am

Top shots guys!
Image
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: neutral calcium 4227

Post by Merlin66 » Mon Aug 22, 2016 5:53 am

I thought I had Menzel's "Our Sun"......
When I checked it's actually "The Sun, Our Star" a 1982 complete update of Menzel by R.W. Noyes.
The paper mentioned was published in 1935....it certainly shows us how technology has moved forward in our favour.....things are much easier today.
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.yahoo.com/neo/groups/ast ... scopy/info
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer

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Re: neutral calcium 4227

Post by highfnum » Mon Aug 22, 2016 5:42 pm

this is book where i found text about 4227
book1s.jpg
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Re: neutral calcium 4227

Post by Merlin66 » Mon Aug 22, 2016 10:56 pm

John,
That looks like one of the early 1st edition copies - 1949?
(I have all the other 1st Edition Harvard Series.... I would buy a copy of Menzel for the collection but the postage rates are a killer!!)
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.yahoo.com/neo/groups/ast ... scopy/info
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer

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Re: neutral calcium 4227

Post by highfnum » Tue Aug 23, 2016 12:21 am

Copyright 1949 by the blakiston company
Great shg images
When shg was king

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Merlin66
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Re: neutral calcium 4227

Post by Merlin66 » Tue Aug 23, 2016 12:54 am

I agree 110%!
The digital SHG will revolutionise the future of solar narrowband imaging!
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.yahoo.com/neo/groups/ast ... scopy/info
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer

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Re: neutral calcium 4227

Post by highfnum » Tue Aug 23, 2016 9:58 pm

8 23 more action but artifacts
fc2_save_2016-08-23-170443-0000neca_000c.jpg
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Re: neutral calcium 4227

Post by highfnum » Tue Aug 23, 2016 10:01 pm

here is original perhaps super SHG'ers like Wah! or Peter could(please) clean this up

Merlin 66 chapter 8 is where I must spend my efforts now !
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Re: neutral calcium 4227

Post by highfnum » Wed Aug 24, 2016 10:50 pm

8 24 a bit cleaner image of 4227
fc2_save_2016-08-24-172415-0000nuca_000.jpg
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Re: neutral calcium 4227

Post by Montana » Thu Aug 25, 2016 2:25 pm

Some nice additions :bow

Alexandra

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