#sunspots

Daniel Fischercosmos4u@scicomm.xyz
2025-07-03

The role of the Lorentz force in sunspot equilibrium: arxiv.org/abs/2505.23986 -> The stability of #sunspots - 400-year-old mystery now solved by astrophysicists at the Freiburg Institute of Solar Physics (KIS): leibniz-kis.de/en/news/article

2025-06-30
Thanks to everyone who followed along with us, we had the first clear day on Sunday June 29th, 5-11pm
The Open Air Astro Fair event Is Done!!! A huge thanks to everyone who joined us for astronomy activities. All funds raised will go to observatory repairs and summer operations.
A photo and video gallery for the event will be posted to the observatory website in the next week. As a reminder if any of you would like to revisit the observatory we will have smaller Wednesday tour events for free all year long after sunset at the observatory (free tickets can be found on the website). https://www.yorku.ca/science/observatory/
Thank you all for your support!

#AstroFair #AstronomyEvent #FamilyFun #ScienceFestival #YorkU #AllanICarswellObservatory #Stargazing #SolarViewing #Sunspots #Planetarium #HandsOnScience #ScienceOutreach #STEMEducation #TorontoEvents #ThingsToDoToronto #SpaceScience #AstronomyForEveryone #ObservatoryEvents #ClearSkies #TelescopeViews #ExploreTheUniverse #AstronomerLife #YorkUObservatory #AICO
Daniel Fischercosmos4u@scicomm.xyz
2025-06-29

A clear #sunset on 29 June in Bochum, Germany - with two #sunspots quite evident at times and a strong #GreenRim near the end of the show: more timesteps in facebook.com/dan.fischer.393/p

Sun to touch the ground, with two spot groupsSun half set, both groups still obviousSun almost gone, green evidentNext timestep - more green
2025-06-28
Unfortunately, Astro Fair is NOT running tonight due to weather conditions. We’ll keep watching the skies and announce the next clear night soon. Your ticket is still valid, and you’ll receive another update by 9:00 AM tomorrow.
Stay tuned! Currently the best day looks to be Sunday June 29th
https://www.yorku.ca/science/observatory/astrofair/

#AstroFair #AstronomyEvent #FamilyFun #ScienceFestival #YorkU #AllanICarswellObservatory #Stargazing #SolarViewing #Sunspots #Planetarium #HandsOnScience #ScienceOutreach #STEMEducation #TorontoEvents #ThingsToDoToronto #SpaceScience #AstronomyForEveryone #ObservatoryEvents #ClearSkies #TelescopeViews #ExploreTheUniverse #AstronomerLife #YorkUObservatory #AICO
2025-06-28

I had an opportunity to do some solar imaging on three straight days and it was really cool to watch the sunspots change in such a short period. Check out how the upper and trailing patches seems to materialize from nowhere and some of the areas shrank. Really cool!

#sunspots #astrophotography #solarimaging #science #sun

Zoomed in to highlight the sunspot areas in each of three images. The first image has a single small spot trailing and nothing above. The second has faint spots above and larger spots forming to the left. The third image has lots of small spots in a cluster above the main group and the trailing spots are more spaced out.2025-06-23 - one large spot disappears around the right edge. Notice the absence of spots above and to the left of the clusters.2025-06-25 image with much larger and more complex trailing and upper spots2025-06-24 - upper and trailing patches start to appear
2025-06-28

Solar Views This late afternoon. A little fuzzy due to being low on horizon.

#astronomy
#sun
#nature
#astrophography
#photography
#smartphoneastronomy
#sunspots

A little darker view of the Sun. Brightness cut by half. Looks like a burnt orange egg yolk.Only a few sunspots today. Our sun is taking a break from the recent Sunspots.Along the Sun's visible surface are a few sunspots numbered 4117 - 4122.
2025-06-27
Unfortunately, Astro Fair is NOT running tonight due to weather conditions. We’ll keep watching the skies and announce the next clear night soon. Your ticket is still valid, and you’ll receive another update by 9:00 AM tomorrow.
Stay tuned! Currently the best day looks to be Sunday June 29th
https://www.yorku.ca/science/observatory/astrofair/

#AstroFair #AstronomyEvent #FamilyFun #ScienceFestival #YorkU #AllanICarswellObservatory #Stargazing #SolarViewing #Sunspots #Planetarium #HandsOnScience #ScienceOutreach #STEMEducation #TorontoEvents #ThingsToDoToronto #SpaceScience #AstronomyForEveryone #ObservatoryEvents #ClearSkies #TelescopeViews #ExploreTheUniverse #AstronomerLife #YorkUObservatory #AICO
2025-06-26
Unfortunately, Astro Fair is NOT running tonight due to weather conditions. We’ll keep watching the skies and announce the next clear night soon. Your ticket is still valid, and you’ll receive another update by 9:00 AM tomorrow.
Stay tuned! Currently the best days look to be Saturday June 28th and Sunday June 29th
https://www.yorku.ca/science/observatory/astrofair/

#AstroFair #AstronomyEvent #FamilyFun #ScienceFestival #YorkU #AllanICarswellObservatory #Stargazing #SolarViewing #Sunspots #Planetarium #HandsOnScience #ScienceOutreach #STEMEducation #TorontoEvents #ThingsToDoToronto #SpaceScience #AstronomyForEveryone #ObservatoryEvents #ClearSkies #TelescopeViews #ExploreTheUniverse #AstronomerLife #YorkUObservatory #AICO
2025-06-25
Unfortunately, Astro Fair is NOT running tonight due to weather conditions. We’ll keep watching the skies and announce the next clear night soon. Your ticket is still valid, and you’ll receive another update by 9:00 AM tomorrow.
Stay tuned!
https://www.yorku.ca/science/observatory/astrofair/

#AstroFair #AstronomyEvent #FamilyFun #ScienceFestival #YorkU #AllanICarswellObservatory #Stargazing #SolarViewing #Sunspots #Planetarium #HandsOnScience #ScienceOutreach #STEMEducation #TorontoEvents #ThingsToDoToronto #SpaceScience #AstronomyForEveryone #ObservatoryEvents #ClearSkies #TelescopeViews #ExploreTheUniverse #AstronomerLife #YorkUObservatory #AICO
Stella-Luna Observatory ✨🌙StellaLunaObs@mastodon.online
2025-06-24

It was a clear, sunny morning. The atmosphere, however, seemed less stable today than under yesterday's clear blue sky. Aside from a striking train of sunspots at disk center, in the southern Solar hemisphere, our Sun's activity is at low levels. Clouds expected tomorrow.

#sunspots #sun #astronomy

The sun appears as a gray/white disk on a black background.A series of dark sunspots run left to right , just below the sun's equator. Image recorded on June 24, 2025.
2025-06-24
Unfortunately, Astro Fair is NOT running tonight due to weather conditions. We’ll keep watching the skies and announce the next clear night soon. Your ticket is still valid, and you’ll receive another update by 9:00 AM tomorrow.
Stay tuned!
https://www.yorku.ca/science/observatory/astrofair/

#AstroFair #AstronomyEvent #FamilyFun #ScienceFestival #YorkU #AllanICarswellObservatory #Stargazing #SolarViewing #Sunspots #Planetarium #HandsOnScience #ScienceOutreach #STEMEducation #TorontoEvents #ThingsToDoToronto #SpaceScience #AstronomyForEveryone #ObservatoryEvents #ClearSkies #TelescopeViews #ExploreTheUniverse #AstronomerLife #YorkUObservatory #AICO
2025-06-23

Summer is only a few days old here in New England, but wow is it hot this week. I left my scope out for some solar imaging and manage to snag some sunspots.

Details + full res: astrobin.com/jfq5x2/

#sunspots #solarImaging #sun #solarSystem #touptek #monochrome

A full disk solar image colorized orange showing a cluster of sun spots just below the equator in the center and another headed off to the right side.
2025-06-22
How to see #sunspots avoiding to look directly at the sun.
#astrophotography #backyardastronomy
Almost #summersolstice, local noon
2025-06-20
Who doesn't love space? It captures our imaginations and makes us wonder if we are truly alone.
Join us for a fair of astronomical proportions at York University with the Allan I Carswell Observatory and our event partners. A single ticket will get you entry to booths, activities, telescopes, and the Astronomy in Action Planetarium.
This exciting event is running as a FIRST CLEAR DAY event as it will be outdoors and under the open air between June 24 - July 4. The event will happen only once on the first clear day, and all ticket holders will see a go or no-go update (depending on the weather) both on the event website and via their registration email by 9am each day.
We are excited to welcome you to walk through the solar system, investigate sundials, and interact with both science and games in this event. All areas are suitable for ages 5 and up, but younger children should be accompanied by an adult.
For tickets and information see: https://www.yorku.ca/science/observatory/astrofair/

Curious about what makes Astro Fair so special? Check out our spotlight in YFile!
https://www.yorku.ca/yfile/2025/06/18/open-air-astro-fair-fosters-learning-local-support-for-york-u-observatory/

#AstroFair #AstronomyEvent #FamilyFun #ScienceFestival #YorkU #AllanICarswellObservatory #Stargazing #SolarViewing #Sunspots #Planetarium #HandsOnScience #ScienceOutreach #STEMEducation #TorontoEvents #ThingsToDoToronto #SpaceScience #AstronomyForEveryone #ObservatoryEvents #ClearSkies #TelescopeViews #ExploreTheUniverse #AstronomerLife #YorkUObservatory #AICO
2025-06-19
Who doesn't love space? It captures our imaginations and makes us wonder if we are truly alone.
Join us for a fair of astronomical proportions at York University with the Allan I Carswell Observatory and our event partners. A single ticket will get you entry to booths, activities, telescopes, and the Astronomy in Action Planetarium.
This exciting event is running as a FIRST CLEAR DAY event as it will be outdoors and under the open air between June 24 - July 4. The event will happen only once on the first clear day, and all ticket holders will see a go or no-go update (depending on the weather) both on the event website and via their registration email by 9am each day.
We are excited to welcome you to walk through the solar system, investigate sundials, and interact with both science and games in this event. All areas are suitable for ages 5 and up, but younger children should be accompanied by an adult.
For tickets and information see: https://www.yorku.ca/science/observatory/astrofair/

Curious about what makes Astro Fair so special? Check out our spotlight in YFile!
https://www.yorku.ca/yfile/2025/06/18/open-air-astro-fair-fosters-learning-local-support-for-york-u-observatory/

#AstroFair #AstronomyEvent #FamilyFun #ScienceFestival #YorkU #AllanICarswellObservatory #Stargazing #SolarViewing #Sunspots #Planetarium #HandsOnScience #ScienceOutreach #STEMEducation #TorontoEvents #ThingsToDoToronto #SpaceScience #AstronomyForEveryone #ObservatoryEvents #ClearSkies #TelescopeViews #ExploreTheUniverse #AstronomerLife #YorkUObservatory #AICO
2025-06-19

In between the clouds, I snapped a shot of the #Sun . Some impressive #SunSpots visible today.

#DwarfII Baader Solar Continuum filter, Dwarf ND1e6 solar filter. 10x1/40s

Post processed in #Snapseed

#Astrodon #Astronomy #astrophotography

The sun against a black background. There is a prominent band of sunspots in the lower left quadrant, and other scattered smaller sunspots.
Kevin FreitasKevinFreitas
2025-06-17
A close-up image of the Sun, predominantly orange with several sunspots visible on its surface.
2025-06-16

Guess who got outside to do a tiny bit of astrophotography today? ME! It was indeed a tiny bit, because I just snagged 1000 frames on the sun, but it's better than nothing. Still waiting for a clear night, but the forecast remains bleak.

In sun-related news, wow! Look at that giant cluster of sunspots!

Details + Full res: astrobin.com/l169e8/

#sun #solarimaging #sunspots #astrophotography #photography #touptek #skywatcherUSA

A full disk monochrome image of the sun colorized to orange with a thick cluster of sunspots on the upper middle part of the surface.

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