Sun up close. 1.5m GREGOR telescope.
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Sun up close. 1.5m GREGOR telescope.
This is quite an interesting article. I still find it amazing on how much of it we can see and image.
https://www.cbsnews.com/news/high-res-i ... -up-close/
https://www.cbsnews.com/news/high-res-i ... -up-close/
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Re: Sun up close. 1.5m GREGOR telescope.
Stunning images and animation. Thanks for pointing us to this article, James.
Stu.
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Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
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Re: Sun up close. 1.5m GREGOR telescope.
That's correct James and those images are quite amazing.
Terry
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Re: Sun up close. 1.5m GREGOR telescope.
Many of us observed this spot when it was on the disc back in late July.
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Re: Sun up close. 1.5m GREGOR telescope.
Nice article and impressive images, James. Thank you: always fun to look at large telescope images.
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Re: Sun up close. 1.5m GREGOR telescope.
Oh my word!! If only I could get granulation like that it makes me drool just thinking about it
Alexandra
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Re: Sun up close. 1.5m GREGOR telescope.
I would love to be able to see them that easy.
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Re: Sun up close. 1.5m GREGOR telescope.
A video on the 1.5m GREGOR solar telescope.
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Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
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Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
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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
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Re: Sun up close. 1.5m GREGOR telescope.
Thanks for this, James. It’s certainly an impressive bit of kit.
Stu.
Stu.
H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
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Re: Sun up close. 1.5m GREGOR telescope.
Fantastic! thanks for the link James. Wouldn't that be nice to say it was your solar setup
On another note, please share how you embedded this video in Solarchat? Mark and I have been trying to work this out for years as the media insert button doesn't work.
Alexandra
On another note, please share how you embedded this video in Solarchat? Mark and I have been trying to work this out for years as the media insert button doesn't work.
Alexandra
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Re: Sun up close. 1.5m GREGOR telescope.
Choose share on YouTube and copy the link it gives you. Then go to to your YouTube insert button in SolarChat and then paste the link once it is open there.
Lunt 8x32 SUNoculars
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Lunt, Coronado, TeleVue, Orion and Meade eyepieces
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Orion 70mm Solar Telescope
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Meade Coronado SolarMax II 60 DS
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Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
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Re: Sun up close. 1.5m GREGOR telescope.
Thanks James!
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: Sun up close. 1.5m GREGOR telescope.
Fantastic animation. I get mesmerized by those things.
What are we seeing at 430 nm? This is apparently the CH G band. I found this:
"Whereas the main source of line opacity in the solar atmosphere is atomic lines, the solar spectrum also contains several strong molecular features. The most prominent among them are the CN violet system at about 380 nm and the CH G-band at about 430 nm. Interestingly, approximately a quarter of solar brightness variability on the timescale of the 11-year magnetic activity cycle comes from the molecular lines (Shapiro et al., 2015). The contribution of molecular lines to the spectrum increases for stars cooler than the Sun, and in the spectra of sunspots and pores, comparatively dark and hence cool concentrations of magnetic flux." (https://www.sciencedirect.com/topics/ea ... ar-spectra)
The idea of molecular bonding at these temperatures is twisting my mind a bit tonight. The interatomic forces would have to exceed the thermal energy. And aren't we dealing with plasma? The electrons of the atoms should be history, leaving the atoms with a net positive charge. Why would they like one another enough to form a molecular bond? I suspect that molecular bonds under these conditions may be a bit different from what I learned about in high school chemistry.
What are we seeing at 430 nm? This is apparently the CH G band. I found this:
"Whereas the main source of line opacity in the solar atmosphere is atomic lines, the solar spectrum also contains several strong molecular features. The most prominent among them are the CN violet system at about 380 nm and the CH G-band at about 430 nm. Interestingly, approximately a quarter of solar brightness variability on the timescale of the 11-year magnetic activity cycle comes from the molecular lines (Shapiro et al., 2015). The contribution of molecular lines to the spectrum increases for stars cooler than the Sun, and in the spectra of sunspots and pores, comparatively dark and hence cool concentrations of magnetic flux." (https://www.sciencedirect.com/topics/ea ... ar-spectra)
The idea of molecular bonding at these temperatures is twisting my mind a bit tonight. The interatomic forces would have to exceed the thermal energy. And aren't we dealing with plasma? The electrons of the atoms should be history, leaving the atoms with a net positive charge. Why would they like one another enough to form a molecular bond? I suspect that molecular bonds under these conditions may be a bit different from what I learned about in high school chemistry.