Following up on our SHG imaging of a few days ago viewtopic.php?t=37061, we made another attempt to try to get good focus across as much of the solar disk as possible.
In the next one, the focus was intentionally positioned over the area just north of the equator. The relevant region is sharper than in the image above.
The issue is that it is difficult with the current optics of our SHG to get good focus across the whole length of the slit onto which the Sun's image is projected. For more details, see our posts in the Solar Radio, Magnetometry and Spectroscopy section viewtopic.php?t=37081.
H-alpha spectroheliograph image of AR 3057, 3053, 3056, 3055
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H-alpha spectroheliograph image of AR 3057, 3053, 3056, 3055
Last edited by thesmiths on Thu Jul 14, 2022 5:31 pm, edited 4 times in total.
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Re: H-alpha spectroheliograph image of AR 3057, 3053, 3056, 3055
The filaments are really dark and show excellent contrast against the disc. And look at the feet on the prom in the SW quadrant. You did excellent on these!
James
James
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Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "
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Re: H-alpha spectroheliograph image of AR 3057, 3053, 3056, 3055
They're nice images Douglas.
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: H-alpha spectroheliograph image of AR 3057, 3053, 3056, 3055
Wow!
Call me Geoff.
I do what I do because I want to, and because I can....
Doesn't mean I know what I'm doing, though!
I do what I do because I want to, and because I can....
Doesn't mean I know what I'm doing, though!
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