Uploaded July 2026 | Updated September 2026, 3 hours ago
This H-alpha time-lapse from July 6, 2026 captures one of the more dynamic active region events I've recorded — multiple surge prominences and active coronal arches erupting and evolving over just a few minutes of real time.
What you're seeing:
Surge Prominences (right side of active region)
Starting at 0:00, a classic surge prominence launches violently upward along open magnetic field lines driven by a localized magnetic reconnection event associated with a sub-flare. Unlike the graceful arc of a quiescent prominence, surges travel in straight or steeply angled paths — a direct signature of the open field geometry.
At around 0:06 watch the fallback phase: the driving energy cuts off and the plasma, having not reached solar escape velocity (~618 km/s), drains back down along the exact same linear pathways under solar gravity. This bidirectional flow along identical field lines is one of the defining characteristics that distinguishes a surge from other prominence types.
A second, broader surge erupts from the same location around 0:12, cutting through the corona at a steep angle with noticeably more volume than the first.
Active Coronal Arches (left side of active region)
Throughout the sequence, a set of active coronal arches anchored to the left of the main structure traces closed magnetic field lines connecting regions of opposite magnetic polarity. The plasma acts as a visible tracer of otherwise invisible magnetic geometry — you can follow individual threads propagating along the curve of the loops and draining back into the chromosphere.
Transition phase at surge tips (0:02–0:04)
Look closely at the leading edge of the first surge — the plasma begins fragmenting into disconnected blobs, showing characteristics intermediate between a surge and a true spray prominence. This transition phase occurs when plasma kinetic energy approaches the threshold of magnetic confinement.
Equipment:
Telescope: TEC160FL refractor
Filter: Solar Spectrum 0.3Å H-alpha etalon with 4x telecentric
Camera: IMX174M
Mount: ZWO AM7
Location: Arizona
Processing: SharpCap • AutoStakkert! • Affinity Photo
The Solar Observer's Handbook — my comprehensive guide to solar observing and imaging — is now available at azastroguy.com and on Amazon. Softcover, signed softcover, and PDF versions are available.
🔔 Subscribe for regular solar time-lapses, tutorials, and solar feature breakdowns.
If you found this video of interest, and are considering investing in a solar telescope or equipment, I would appreciate you using one of my affiliate links. If you make a qualifying purchase it will cost you nothing, but I will receive a small commission. Thanks!
Agena Astro: bit.ly/3qfWaZS
Highpoint Scientific: bit.ly/4p7f7HA
Lunt solar products: https://luntsolarsystems.com/?rfsn=87...
Want to buy me a coffee? It's appreciated! buymeacoffee.com/azastroguy
#SolarAstronomy #HAlpha #Astrophotography #SolarImaging #Prominences #SurgeProminence #SolarPhysics #azastroguy #Sun #NASA
This H-alpha time-lapse from July 6, 2026 captures one of the more dynamic active region events I've recorded — multiple surge prominences and active coronal arches erupting and evolving over just a few minutes of real time.
What you're seeing:
Surge Prominences (right side of active region)
Starting at 0:00, a classic surge prominence launches violently upward along open magnetic field lines driven by a localized magnetic reconnection event associated with a sub-flare. Unlike the graceful arc of a quiescent prominence, surges travel in straight or steeply angled paths — a direct signature of the open field geometry.
At around 0:06 watch the fallback phase: the driving energy cuts off and the plasma, having not reached solar escape velocity (~618 km/s), drains back down along the exact same linear pathways under solar gravity. This bidirectional flow along identical field lines is one of the defining characteristics that distinguishes a surge from other prominence types.
A second, broader surge erupts from the same location around 0:12, cutting through the corona at a steep angle with noticeably more volume than the first.
Active Coronal Arches (left side of active region)
Throughout the sequence, a set of active coronal arches anchored to the left of the main structure traces closed magnetic field lines connecting regions of opposite magnetic polarity. The plasma acts as a visible tracer of otherwise invisible magnetic geometry — you can follow individual threads propagating along the curve of the loops and draining back into the chromosphere.
Transition phase at surge tips (0:02–0:04)
Look closely at the leading edge of the first surge — the plasma begins fragmenting into disconnected blobs, showing characteristics intermediate between a surge and a true spray prominence. This transition phase occurs when plasma kinetic energy approaches the threshold of magnetic confinement.
Equipment:
Telescope: TEC160FL refractor
Filter: Solar Spectrum 0.3Å H-alpha etalon with 4x telecentric
Camera: IMX174M
Mount: ZWO AM7
Location: Arizona
Processing: SharpCap • AutoStakkert! • Affinity Photo
The Solar Observer's Handbook — my comprehensive guide to solar observing and imaging — is now available at azastroguy.com and on Amazon. Softcover, signed softcover, and PDF versions are available.
🔔 Subscribe for regular solar time-lapses, tutorials, and solar feature breakdowns.
If you found this video of interest, and are considering investing in a solar telescope or equipment, I would appreciate you using one of my affiliate links. If you make a qualifying purchase it will cost you nothing, but I will receive a small commission. Thanks!
Agena Astro: bit.ly/3qfWaZS
Highpoint Scientific: bit.ly/4p7f7HA
Lunt solar products: https://luntsolarsystems.com/?rfsn=87...
Want to buy me a coffee? It's appreciated! buymeacoffee.com/azastroguy
#SolarAstronomy #HAlpha #Astrophotography #SolarImaging #Prominences #SurgeProminence #SolarPhysics #azastroguy #Sun #NASA
