Upper middle lower levels question

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highfnum
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Upper middle lower levels question

Post by highfnum » Wed Aug 24, 2016 1:01 am

Is upper middle lower levels of chromosphere same as left wing middle and right wing when creating spectrograph

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Merlin66
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Re: Upper middle lower levels question

Post by Merlin66 » Fri Aug 26, 2016 10:34 pm

John,
This is discussed in "imaging Sunlight" Section 3.7.4
Figure 3.16 I think answers your question. For Ha the wings record data at a much lower level of the chromosphere - just above the photosphere whereas the core gives info at around 1500Km.
Hope this helps.
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
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"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer

highfnum
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Re: Upper middle lower levels question

Post by highfnum » Sat Aug 27, 2016 12:08 am

thx for exact location must of missed it

highfnum
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Re: Upper middle lower levels question

Post by highfnum » Sat Aug 27, 2016 11:47 am

Merlin66
ok I took 10 shots across Ha spectrum red to blue wings
I created this gif

is this what you mean in your book?

http://spaceweathergallery.com/indiv_up ... _id=128677

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marktownley
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Re: Upper middle lower levels question

Post by marktownley » Sat Aug 27, 2016 10:24 pm

Thats a cool animation John!
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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Merlin66
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Re: Upper middle lower levels question

Post by Merlin66 » Sat Aug 27, 2016 11:12 pm

John,
your animation shows the various levels...
The out of band wings give the near photospheric surface features seen by the SHG in the continuum (similar to white light) and the Ha detail at higher levels where the bandwidth is centred on band, the filaments and proms become more obvious.
Well done.
"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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