I don't normally do inverted images but the post from Marty Wise (viewtopic.php?t=37109) inspired me to give it a go in this case. These are scans with our spectroheliograph (SHG) that we have described previously. In this first one, the focus is good over most of the central region. In the second, we managed to improve the focus a bit for the upper part. In the third one, we tried to perfect the focus on the bottom area but the seeing had by that time deteriorated so it's not quite as sharp as the two previous ones. Click on the images to see at higher resolution.
For the non-inverted versions, see our post in the Solar Radio, Magnetometry and Spectroscopy section: viewtopic.php?t=37130, which also has some additional technical details. My feeling is SHG images give the impression of higher resolution than a comparable aperture (the refractor used here only has an aperture of 106mm), perhaps because the much narrower bandwidth increases the feature contrast versus other imaging methods.
High-resolution spectroheliograph images (July 16) -- inverted! -- Clouds on the Sun
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High-resolution spectroheliograph images (July 16) -- inverted! -- Clouds on the Sun
Last edited by thesmiths on Sun Jul 17, 2022 5:54 pm, edited 2 times in total.
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Re: High-resolution spectroheliograph images (July 16) -- inverted!
These are awesome!!
Two thumbs up!!
James
Two thumbs up!!
James
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Re: High-resolution spectroheliograph images (July 16) -- inverted! -- Clouds on the Sun
Wow, that's from a SHG? I would never have guessed with great resolution and what looks to have been super steady seeing. Excellent results (and your other thread with the natural image). I will have to read more about your instrument and methods, this is awesome!
Very best,
Very best,
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Re: High-resolution spectroheliograph images (July 16) -- inverted! -- Clouds on the Sun
Great equipment and images.
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Re: High-resolution spectroheliograph images (July 16) -- inverted! -- Clouds on the Sun
And the beauty of an SHG is that they can image in any spectral line. Not only in the popular Ha and CaIIK spectral lines.
James
James
Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
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Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
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Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
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Re: High-resolution spectroheliograph images (July 16) -- inverted! -- Clouds on the Sun
Very nice 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: High-resolution spectroheliograph images (July 16) -- inverted! -- Clouds on the Sun
Look at all the worms on the disc
Alexandra
Alexandra
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Re: High-resolution spectroheliograph images (July 16) -- inverted! -- Clouds on the Sun
Lunt 8x32 SUNoculars
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! "
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
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Re: High-resolution spectroheliograph images (July 16) -- inverted! -- Clouds on the Sun
I've just treated my vine weevils with those
Alexandra
Alexandra
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Re: High-resolution spectroheliograph images (July 16) -- inverted! -- Clouds on the Sun
Does that mean the Sun has weevils?
Lunt 8x32 SUNoculars
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! "
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! "