#prominences — Public Fediverse posts

#Solar #prominences are huge, cool and dense structures suspended in the #corona. Some are also extremely long-lived: They are stable for weeks relying on constant replenishing of fresh material. A study published today in #NatureAstronomy explores their “supply logistics”: https://www.nature.com/articles/s41550-026-02840-7
More: information: https://www.mps.mpg.de/solar-prominences-supply-mechanisms-in-the-sun-s-corona ☀️🔭
#Sun #spaceweather

Image credits: Sun: NASA/SDO/GSFC Visualization Studio/Virtual Solar Observatory; white frames: MPS

#Solar #prominences are huge, beautiful structures in the #corona. Some are stable for weeks relying on constant replenishing of fresh material. A study published today in @[email protected] explores their “supply logistics”: www.nature.com/articles/s41.... More: www.mps.mpg.de/solar-promin... ☀️🔭

Recent Solar adventures

October 3, 2025 — We had been having quit a lot of trouble lately, recording data and reproducing images of Sun with prominences. There was some early success but even those images were a struggle to produce. Taking a look at suggested camera settings found in an article on solar imaging, one thing stood out — gain! We had nudged the camera’s gain setting upward and that’s not helpful and certainly not recommended; the setting should be very low or even zero! A few adjustments in data capture parameters was all it took to make a big difference in image processing and results!

We’re very pleased with Barlow-boosted views, shown here, though we’re still having some issues with achieving even lighting across whole-disk views — just can’t seem to get them tuned right with the Coronado SolarMax III. Visual observing was also very good, especially with the TeleVue 10mm eyepiece. October 3 conditions: Clear sky, temperature of 74°F, light southeast wind.

#2025 #astronomy #astrophotography #chromosphere #hydrogenAlpha #prominences #solar #sun #sunspots

High-tech Silhouette, by Tom Williams

This H-alpha image of the sun features the silhouette of the International Space Station transiting the eastern solar limb. Crossing the field of view in just 0.2 seconds, ISS transits of the sun are particularly rare from any one location on Earth. The sun was active and a prominence can be seen right next to the station’s transit location.

@photography
#atrophotography
#Sun
#ISS
#prominences

#Prominences and #Filaments on the Active #Sun
#Astronomy #Picture of the Day

https://apod.nasa.gov/apod/ap240615.html

#APOD

During totality, glowing loops of plasma called #Solar #Prominences could be seen extending into the corona.

https://www.nasa.gov/image-article/what-solar-prominence/

@geerlingguy WOW! 🔥 literally! :awesome: so cool 👀
#protuberanzen #prominences

In this picture, I grafted together portions of two of my totality images to display the day's solar prominences to their best advantage. As Moon moved across Sun, some proms were covered while others were exposed so, in this case, two photos are better *as* one. #eclipse #prominences #solareclipse #solareclipse2024 #astrophotography

My pastel sketch of #totality during yesterday's #TotalSolarEclipse. I wasn't there to see it in person this time, but I used the amazing photo shared by Tom Kerss (with permission) as a reference image. The #corona looked so different yesterday than it did when we saw the 2017 eclipse because we were in solar minimum then and near solar maximum now. There were several lovely #prominences visible too #AstronomySketching #SunSketch

@FredericPaletou yes indeed! that translates to a central #wavelength of about 656 nm. The #filter that I used (6.5 nm wide) is intended for #deepsky objects. Still gives more detail than no filter. #Solar #prominences need much more expensive bandpass filters, typically just 0.2 nm wide.

Full disk solar image from a week ago.

Was a spectacular clear day but somewhat compromised by smoke from north western Canada (I'm on the far east coast!).

Some #prominences are faintly visible. My solar processing still needs work :=)

#Autostakkert, #IMPPG and #GIMP for processing and colourization. 70% of 1000 frames stacked.

#Solar #Filament

#Sun in #HAlpha Sunday 4th June '23 from #Oxfordshire, UK. #CoronadoPST H-alpha solar telescope, 2x Barlow +#ASI120MC camera. North is ~ 10deg clockwise. Several #Prominences visible + #Sunspots #AR13326 #AR13320 #AR13323 #AR13321 & #AR13319 looking lovely. Full details are on my Flickr page if you want to know more #ActiveRegions #SolarAstronomy #SolarAstrophotography

There were plenty of #Prominences visible on the #Sun on 3rd April 2023. #CoronadoPST H-alpha solar telescope, 2x Barlow & #ZWO #ASI120MC camera. I took a 1,000 frame video & stacked the best 50%. #Sunspot group #AR13270 is visible in the 3rd image

My second solar image of the day, this time with a bit of magnification as opposed to a full disk. This allows us to better appreciate the #prominences shown on the solar limb. This hedgerow-type prominence is quite big!

#sun #solar #astronomy #astrophotography #PuertoRico #astrodon #imaging

#Sunspots + #Prominences in H-alpha taken from Oxfordshire, UK on 19th January 2023. #CoronadoPST solar telescope, 2x Barlow + #ASI120MC camera. So much activity at the moment! #ActiveRegions

Hello to all, here’s my latest image of the #sun, taken with an hydrogen alpha telescope to show its #prominences and sunspots. #astronomy #astrophotography

https://www.captandoelcosmos.com/el-sol-en-hidrogeno-alfa-12-diciembre-de-2022/

Some nice images of #Solar #prominences taken from my house today around noon, but I couldn’t spare some time to process them until tonight.

#astronomy #sun #astrophotography

The #sun today imaged using a small #solar #telescope. Even if this image was taken through some hazy clouds, I think it turned out well. There are a few active regions visible, and several #prominences.

When we observe the sun under Ha filtering, we are able to see the sun's #chromosphere and its #prominences. The chromosphere is a gaseous layer, mainly hydrogen, which lays above the #photosphere. The high temperatures at that layer causes the hydrogen to glow red at that wavelength, hence the Ha name. Also, you could be able to see a #prominence, which is an eruption-like event of solar material thrown out into space!