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  1. Our Sun today remained at low activity levels and bore only four numbered regions with sunspots. A smattering of filament structures were seen in the chromosphere, via our H-a telescope. Bright plage areas were present near and around the active regions. The solar disk bore a number of prominences around its rim. In all, not a bad session considering it took place in the afternoon due to morning cloudiness. #astronomy #solarastronomy #sun

  2. Our Sun today remained at low activity levels and bore only four numbered regions with sunspots. A smattering of filament structures were seen in the chromosphere, via our H-a telescope. Bright plage areas were present near and around the active regions. The solar disk bore a number of prominences around its rim. In all, not a bad session considering it took place in the afternoon due to morning cloudiness. #astronomy #solarastronomy #sun

  3. Our Sun today remained at low activity levels and bore only four numbered regions with sunspots. A smattering of filament structures were seen in the chromosphere, via our H-a telescope. Bright plage areas were present near and around the active regions. The solar disk bore a number of prominences around its rim. In all, not a bad session considering it took place in the afternoon due to morning cloudiness. #astronomy #solarastronomy #sun

  4. Our Sun today remained at low activity levels and bore only four numbered regions with sunspots. A smattering of filament structures were seen in the chromosphere, via our H-a telescope. Bright plage areas were present near and around the active regions. The solar disk bore a number of prominences around its rim. In all, not a bad session considering it took place in the afternoon due to morning cloudiness. #astronomy #solarastronomy #sun

  5. Not much to see in white light today on our favorite star -- only one Active Region still with sunspots, nearing the western Solar limb. Prominences were subdued as well, with only the one on the northwest limb easily observed; that is also the vicinity of a flare observed by SWPC peaking earlier today. #astronomy #solarastronomy #solar

  6. Not much to see in white light today on our favorite star -- only one Active Region still with sunspots, nearing the western Solar limb. Prominences were subdued as well, with only the one on the northwest limb easily observed; that is also the vicinity of a flare observed by SWPC peaking earlier today. #astronomy #solarastronomy #solar

  7. Not much to see in white light today on our favorite star -- only one Active Region still with sunspots, nearing the western Solar limb. Prominences were subdued as well, with only the one on the northwest limb easily observed; that is also the vicinity of a flare observed by SWPC peaking earlier today. #astronomy #solarastronomy #solar

  8. Not much to see in white light today on our favorite star -- only one Active Region still with sunspots, nearing the western Solar limb. Prominences were subdued as well, with only the one on the northwest limb easily observed; that is also the vicinity of a flare observed by SWPC peaking earlier today. #astronomy #solarastronomy #solar

  9. After many days and nights of clouds and rain, we finally got a break in the weather. Seeing and transparency were not the greatest -- seeing was only fair, and we were imaging through thin cirrus most of the time. Sunspots have returned though Sun remains at low activity levels, as per SWPC. AR4536 was reported growing and threw off a C1.5-class flare. Nice to be able to get under the sky again without getting wet! #solarastronomy #solar #astronomy

  10. After many days and nights of clouds and rain, we finally got a break in the weather. Seeing and transparency were not the greatest -- seeing was only fair, and we were imaging through thin cirrus most of the time. Sunspots have returned though Sun remains at low activity levels, as per SWPC. AR4536 was reported growing and threw off a C1.5-class flare. Nice to be able to get under the sky again without getting wet! #solarastronomy #solar #astronomy

  11. After many days and nights of clouds and rain, we finally got a break in the weather. Seeing and transparency were not the greatest -- seeing was only fair, and we were imaging through thin cirrus most of the time. Sunspots have returned though Sun remains at low activity levels, as per SWPC. AR4536 was reported growing and threw off a C1.5-class flare. Nice to be able to get under the sky again without getting wet! #solarastronomy #solar #astronomy

  12. After many days and nights of clouds and rain, we finally got a break in the weather. Seeing and transparency were not the greatest -- seeing was only fair, and we were imaging through thin cirrus most of the time. Sunspots have returned though Sun remains at low activity levels, as per SWPC. AR4536 was reported growing and threw off a C1.5-class flare. Nice to be able to get under the sky again without getting wet! #solarastronomy #solar #astronomy

  13. Three unexpected airplane transits during the solar eclipse of August 12, 2026, captured as the Sun changed from a full disk to a narrow crescent over Lausanne. ☀️✈️🌑
    #solareclipse #eclipse #solarastronomy #astrophotography #astronomy #telescope #space #sun

  14. Three unexpected airplane transits during the solar eclipse of August 12, 2026, captured as the Sun changed from a full disk to a narrow crescent over Lausanne. ☀️✈️🌑
    #solareclipse #eclipse #solarastronomy #astrophotography #astronomy #telescope #space #sun

  15. Three unexpected airplane transits during the solar eclipse of August 12, 2026, captured as the Sun changed from a full disk to a narrow crescent over Lausanne. ☀️✈️🌑
    #solareclipse #eclipse #solarastronomy #astrophotography #astronomy #telescope #space #sun

  16. Three unexpected airplane transits during the solar eclipse of August 12, 2026, captured as the Sun changed from a full disk to a narrow crescent over Lausanne. ☀️✈️🌑
    #solareclipse #eclipse #solarastronomy #astrophotography #astronomy #telescope #space #sun

  17. Partial solar eclipse on August 12, 2026, captured from Lausanne, Switzerland. ☀️🌑
    A quick look at the journey from the raw telescope view to the stacked, sharpened, inverted, and colorized result.
    #solareclipse #eclipse #solarastronomy #astrophotography #astronomy #telescope #space #sun

  18. Partial solar eclipse on August 12, 2026, captured from Lausanne, Switzerland. ☀️🌑
    A quick look at the journey from the raw telescope view to the stacked, sharpened, inverted, and colorized result.
    #solareclipse #eclipse #solarastronomy #astrophotography #astronomy #telescope #space #sun

  19. Partial solar eclipse on August 12, 2026, captured from Lausanne, Switzerland. ☀️🌑
    A quick look at the journey from the raw telescope view to the stacked, sharpened, inverted, and colorized result.
    #solareclipse #eclipse #solarastronomy #astrophotography #astronomy #telescope #space #sun

  20. Partial solar eclipse on August 12, 2026, captured from Lausanne, Switzerland. ☀️🌑
    A quick look at the journey from the raw telescope view to the stacked, sharpened, inverted, and colorized result.
    #solareclipse #eclipse #solarastronomy #astrophotography #astronomy #telescope #space #sun

  21. The solar eclipse of August 12, 2026, from Lausanne, Switzerland. ☀️🌑
    The eclipse reached 91%, and I captured it from the beginning to maximum, just before the Sun disappeared behind the mountains.
    This composite is made from 36 × 120-second videos, each stacked and processed individually.
    Lunt 60mm + ZWO ASI678MM.
    420mm, f7, 36 × 3'960 frames (142,560 frames total).
    #solareclipse #eclipse #solarastronomy #astrophotography #astronomy #telescope #space #sun

  22. The solar eclipse of August 12, 2026, from Lausanne, Switzerland. ☀️🌑
    The eclipse reached 91%, and I captured it from the beginning to maximum, just before the Sun disappeared behind the mountains.
    This composite is made from 36 × 120-second videos, each stacked and processed individually.
    Lunt 60mm + ZWO ASI678MM.
    420mm, f7, 36 × 3'960 frames (142,560 frames total).
    #solareclipse #eclipse #solarastronomy #astrophotography #astronomy #telescope #space #sun

  23. The solar eclipse of August 12, 2026, from Lausanne, Switzerland. ☀️🌑
    The eclipse reached 91%, and I captured it from the beginning to maximum, just before the Sun disappeared behind the mountains.
    This composite is made from 36 × 120-second videos, each stacked and processed individually.
    Lunt 60mm + ZWO ASI678MM.
    420mm, f7, 36 × 3'960 frames (142,560 frames total).
    #solareclipse #eclipse #solarastronomy #astrophotography #astronomy #telescope #space #sun

  24. The solar eclipse of August 12, 2026, from Lausanne, Switzerland. ☀️🌑
    The eclipse reached 91%, and I captured it from the beginning to maximum, just before the Sun disappeared behind the mountains.
    This composite is made from 36 × 120-second videos, each stacked and processed individually.
    Lunt 60mm + ZWO ASI678MM.
    420mm, f7, 36 × 3'960 frames (142,560 frames total).
    #solareclipse #eclipse #solarastronomy #astrophotography #astronomy #telescope #space #sun

  25. The solar eclipse of August 12, 2026, from Lausanne, Switzerland. ☀️🌑
    The eclipse reached 91%, and I captured it from the beginning to maximum, just before the Sun disappeared behind the mountains.
    This time-lapse is made from 144 × 30-second videos, each stacked and processed individually.
    Lunt 60mm + ZWO ASI678MM.
    420mm, f7, 144 × 990 frames (142,560 frames total).
    #solareclipse #eclipse #solarastronomy #astrophotography #astronomy #telescope #space #sun

  26. The solar eclipse of August 12, 2026, from Lausanne, Switzerland. ☀️🌑
    The eclipse reached 91%, and I captured it from the beginning to maximum, just before the Sun disappeared behind the mountains.
    This time-lapse is made from 144 × 30-second videos, each stacked and processed individually.
    Lunt 60mm + ZWO ASI678MM.
    420mm, f7, 144 × 990 frames (142,560 frames total).
    #solareclipse #eclipse #solarastronomy #astrophotography #astronomy #telescope #space #sun

  27. The solar eclipse of August 12, 2026, from Lausanne, Switzerland. ☀️🌑
    The eclipse reached 91%, and I captured it from the beginning to maximum, just before the Sun disappeared behind the mountains.
    This time-lapse is made from 144 × 30-second videos, each stacked and processed individually.
    Lunt 60mm + ZWO ASI678MM.
    420mm, f7, 144 × 990 frames (142,560 frames total).
    #solareclipse #eclipse #solarastronomy #astrophotography #astronomy #telescope #space #sun

  28. The solar eclipse of August 12, 2026, from Lausanne, Switzerland. ☀️🌑
    The eclipse reached 91%, and I captured it from the beginning to maximum, just before the Sun disappeared behind the mountains.
    This time-lapse is made from 144 × 30-second videos, each stacked and processed individually.
    Lunt 60mm + ZWO ASI678MM.
    420mm, f7, 144 × 990 frames (142,560 frames total).
    #solareclipse #eclipse #solarastronomy #astrophotography #astronomy #telescope #space #sun

  29. Holy shit!

    Would you look at the scale on the inset of the image!

    100km!

    The mad bastards have imaged the surface of the Sun down to incredible resolution!

    #SolarAstronomy #TheSun

    abc.net.au/news/science/2026-0

    doi.org/10.1038/s41586-026-108

  30. Holy shit!

    Would you look at the scale on the inset of the image!

    100km!

    The mad bastards have imaged the surface of the Sun down to incredible resolution!

    #SolarAstronomy #TheSun

    abc.net.au/news/science/2026-0

    doi.org/10.1038/s41586-026-108

  31. Holy shit!

    Would you look at the scale on the inset of the image!

    100km!

    The mad bastards have imaged the surface of the Sun down to incredible resolution!

    #SolarAstronomy #TheSun

    abc.net.au/news/science/2026-0

    doi.org/10.1038/s41586-026-108

  32. Holy shit!

    Would you look at the scale on the inset of the image!

    100km!

    The mad bastards have imaged the surface of the Sun down to incredible resolution!

    #SolarAstronomy #TheSun

    abc.net.au/news/science/2026-0

    doi.org/10.1038/s41586-026-108

  33. Multiple flares with associated coronal mass ejections (CMEs) have been observed over the past 24 hours, originating from Solar Active Region 4455, shown here. "Closely-spaced impacts on June 5th could produce strong G3-class geomagnetic storms," reports SpaceWeather .com, "with auroras in Europe and the USA at mid-latitudes." Of course, we are expecting cloudy skies, here in Northeast Ohio, when the aurora may occur. #spaceweather #aurora #sun #sunspot #solarastronomy #astronomy

  34. Multiple flares with associated coronal mass ejections (CMEs) have been observed over the past 24 hours, originating from Solar Active Region 4455, shown here. "Closely-spaced impacts on June 5th could produce strong G3-class geomagnetic storms," reports SpaceWeather .com, "with auroras in Europe and the USA at mid-latitudes." Of course, we are expecting cloudy skies, here in Northeast Ohio, when the aurora may occur. #spaceweather #aurora #sun #sunspot #solarastronomy #astronomy

  35. Multiple flares with associated coronal mass ejections (CMEs) have been observed over the past 24 hours, originating from Solar Active Region 4455, shown here. "Closely-spaced impacts on June 5th could produce strong G3-class geomagnetic storms," reports SpaceWeather .com, "with auroras in Europe and the USA at mid-latitudes." Of course, we are expecting cloudy skies, here in Northeast Ohio, when the aurora may occur. #spaceweather #aurora #sun #sunspot #solarastronomy #astronomy

  36. Multiple flares with associated coronal mass ejections (CMEs) have been observed over the past 24 hours, originating from Solar Active Region 4455, shown here. "Closely-spaced impacts on June 5th could produce strong G3-class geomagnetic storms," reports SpaceWeather .com, "with auroras in Europe and the USA at mid-latitudes." Of course, we are expecting cloudy skies, here in Northeast Ohio, when the aurora may occur. #spaceweather #aurora #sun #sunspot #solarastronomy #astronomy

  37. We normally don't post inverted (positive/negative) images of Earth's Sun but today's was so very interesting we've shared it here! The pit shape directly above the large, bold filament is Active Region 4443. Golden colored prominences rise from the western Solar limb -- there's even a bit of "filaprom" visible in the grouping near the top of this image -- silhouetted against blank white (inverted) space. More later, but we wanted to get this one out ASAP.
    #solarastronomy

  38. We normally don't post inverted (positive/negative) images of Earth's Sun but today's was so very interesting we've shared it here! The pit shape directly above the large, bold filament is Active Region 4443. Golden colored prominences rise from the western Solar limb -- there's even a bit of "filaprom" visible in the grouping near the top of this image -- silhouetted against blank white (inverted) space. More later, but we wanted to get this one out ASAP.
    #solarastronomy

  39. We normally don't post inverted (positive/negative) images of Earth's Sun but today's was so very interesting we've shared it here! The pit shape directly above the large, bold filament is Active Region 4443. Golden colored prominences rise from the western Solar limb -- there's even a bit of "filaprom" visible in the grouping near the top of this image -- silhouetted against blank white (inverted) space. More later, but we wanted to get this one out ASAP.
    #solarastronomy

  40. We normally don't post inverted (positive/negative) images of Earth's Sun but today's was so very interesting we've shared it here! The pit shape directly above the large, bold filament is Active Region 4443. Golden colored prominences rise from the western Solar limb -- there's even a bit of "filaprom" visible in the grouping near the top of this image -- silhouetted against blank white (inverted) space. More later, but we wanted to get this one out ASAP.
    #solarastronomy

  41. The Sun, on Sunday morning, observed through clear blue skies, via hydrogen-alpha light. Plenty of prominences present around the rim, and several sunspots / Active Regions provided points of interest for observation. In the second image here, the curved, white patch near a prominence is AR4436 which exploded with an M5.7-class flare a couple of hours earlier -- its CME is likely to miss Earth as it passes by on May 13. This AR bears watching. #solarastronomy

  42. The Sun, on Sunday morning, observed through clear blue skies, via hydrogen-alpha light. Plenty of prominences present around the rim, and several sunspots / Active Regions provided points of interest for observation. In the second image here, the curved, white patch near a prominence is AR4436 which exploded with an M5.7-class flare a couple of hours earlier -- its CME is likely to miss Earth as it passes by on May 13. This AR bears watching. #solarastronomy

  43. The Sun, on Sunday morning, observed through clear blue skies, via hydrogen-alpha light. Plenty of prominences present around the rim, and several sunspots / Active Regions provided points of interest for observation. In the second image here, the curved, white patch near a prominence is AR4436 which exploded with an M5.7-class flare a couple of hours earlier -- its CME is likely to miss Earth as it passes by on May 13. This AR bears watching. #solarastronomy

  44. The Sun, on Sunday morning, observed through clear blue skies, via hydrogen-alpha light. Plenty of prominences present around the rim, and several sunspots / Active Regions provided points of interest for observation. In the second image here, the curved, white patch near a prominence is AR4436 which exploded with an M5.7-class flare a couple of hours earlier -- its CME is likely to miss Earth as it passes by on May 13. This AR bears watching. #solarastronomy

  45. A sunny morning let us observe a fine prominence on the northeastern limb of Earth's Sun. We struggled to adjust the telescope and camera to best resolve the feature not realizing, at the time, the plasma "fountain" was changing -- apparently collapsing -- before our eyes! Pretty exciting, when you think about what's happening, and how large those prominences are! Clouds and deteriorating seeing limited further efforts. #solarastronomy #astronomy #sun

  46. A sunny morning let us observe a fine prominence on the northeastern limb of Earth's Sun. We struggled to adjust the telescope and camera to best resolve the feature not realizing, at the time, the plasma "fountain" was changing -- apparently collapsing -- before our eyes! Pretty exciting, when you think about what's happening, and how large those prominences are! Clouds and deteriorating seeing limited further efforts. #solarastronomy #astronomy #sun

  47. A sunny morning let us observe a fine prominence on the northeastern limb of Earth's Sun. We struggled to adjust the telescope and camera to best resolve the feature not realizing, at the time, the plasma "fountain" was changing -- apparently collapsing -- before our eyes! Pretty exciting, when you think about what's happening, and how large those prominences are! Clouds and deteriorating seeing limited further efforts. #solarastronomy #astronomy #sun

  48. A sunny morning let us observe a fine prominence on the northeastern limb of Earth's Sun. We struggled to adjust the telescope and camera to best resolve the feature not realizing, at the time, the plasma "fountain" was changing -- apparently collapsing -- before our eyes! Pretty exciting, when you think about what's happening, and how large those prominences are! Clouds and deteriorating seeing limited further efforts. #solarastronomy #astronomy #sun

  49. My favorite image from this morning’s observing run is actually a screenshot made during processing. It seems every time we attempted to finalize edits, the software essentially threw up! So before finalizing this one, we made a screen capture and I’m glad! Numerous spicules can be seen along the rim, and the prominence itself has an unexpected dynamical look. Three cone-shaped filament segments add to the scene. #solarobserving #solarastronomy #sun

  50. My favorite image from this morning’s observing run is actually a screenshot made during processing. It seems every time we attempted to finalize edits, the software essentially threw up! So before finalizing this one, we made a screen capture and I’m glad! Numerous spicules can be seen along the rim, and the prominence itself has an unexpected dynamical look. Three cone-shaped filament segments add to the scene. #solarobserving #solarastronomy #sun

  51. My favorite image from this morning’s observing run is actually a screenshot made during processing. It seems every time we attempted to finalize edits, the software essentially threw up! So before finalizing this one, we made a screen capture and I’m glad! Numerous spicules can be seen along the rim, and the prominence itself has an unexpected dynamical look. Three cone-shaped filament segments add to the scene. #solarobserving #solarastronomy #sun

  52. My favorite image from this morning’s observing run is actually a screenshot made during processing. It seems every time we attempted to finalize edits, the software essentially threw up! So before finalizing this one, we made a screen capture and I’m glad! Numerous spicules can be seen along the rim, and the prominence itself has an unexpected dynamical look. Three cone-shaped filament segments add to the scene. #solarobserving #solarastronomy #sun

  53. The first step of the new 8m Sundial is piqueing my sunny astronomy interest! Fingers crossed for a finished installation this summer at #yorkuniversity

    For enthusiasts it will be based on the Shmoyer Sunquist Sundial design and should be fairly high accuracy! #sundial #solarastronomy #solar #telescope #science #Astrodon #astronomy

  54. The first step of the new 8m Sundial is piqueing my sunny astronomy interest! Fingers crossed for a finished installation this summer at #yorkuniversity

    For enthusiasts it will be based on the Shmoyer Sunquist Sundial design and should be fairly high accuracy! #sundial #solarastronomy #solar #telescope #science #Astrodon #astronomy

  55. The first step of the new 8m Sundial is piqueing my sunny astronomy interest! Fingers crossed for a finished installation this summer at #yorkuniversity

    For enthusiasts it will be based on the Shmoyer Sunquist Sundial design and should be fairly high accuracy! #sundial #solarastronomy #solar #telescope #science #Astrodon #astronomy

  56. The first step of the new 8m Sundial is piqueing my sunny astronomy interest! Fingers crossed for a finished installation this summer at #yorkuniversity

    For enthusiasts it will be based on the Shmoyer Sunquist Sundial design and should be fairly high accuracy! #sundial #solarastronomy #solar #telescope #science #Astrodon #astronomy