Sun on Sergey's Astrophotography

The Sun in White Light: July 2026

Thu, 02 Jul 2026 13:14:00 +0000

The whole solar disk in white light, where sunspot groups stand out as dark marks against the granulated photosphere. The brightness fades subtly toward the edge, because at the rim we look through higher, cooler layers.

Captured as video panels, each stacked in AutoStakkert!3, sharpened in ImPPG and stitched into a mosaic.

Filaments and an Active Region: April 2026

Fri, 03 Apr 2026 11:23:00 +0000

A winding dark filament runs through the field, with a sunspot and a region of bright plage below it.

Captured as video panels, each stacked in AutoStakkert!3, sharpened in ImPPG and stitched into a mosaic.

Twisted Fibrils Around a Spot Group

Mon, 08 Dec 2025 12:10:00 +0000

Dark sunspots and bright plage are wrapped in swirling fibrils, a close look at the magnetic structure of an active region in the chromosphere.

Captured as video, stacked in AutoStakkert!3 and sharpened in ImPPG.

Sunspot, Plage and Fibrils in H-alpha

Tue, 28 Oct 2025 14:18:00 +0000

A sunspot sits beside a field of bright plage, surrounded by the dense web of fibrils that follow the magnetic field lines.

Captured as video panels, each stacked in AutoStakkert!3, sharpened in ImPPG and stitched into a mosaic.

Prominence over the Limb: May 2025

Sat, 17 May 2025 12:09:00 +0000

A prominence rises over the limb in colored H-alpha, with the finely mottled chromosphere filling the lower part of the frame. In motion, the prominence’s structure changes slowly but visibly.

Frames were captured as video, each stacked in AutoStakkert!3 and sharpened in ImPPG, then aligned and assembled into the time-lapse.

A Serpentine Filament in H-alpha

Thu, 01 May 2025 11:52:00 +0000

A long, S-shaped filament curves across the chromosphere near the limb. Filaments are prominences seen against the disk, dense ribbons of gas held up by magnetic fields.

Captured as video panels, each stacked in AutoStakkert!3, sharpened in ImPPG and stitched into a mosaic.

Limb Prominence and Chromospheric Texture

Thu, 10 Apr 2025 11:22:00 +0000

The limb in H-alpha, with prominence material hovering above the finely mottled texture of the chromosphere.

Captured as video panels, each stacked in AutoStakkert!3, sharpened in ImPPG and stitched into a mosaic.

A Spotted Solar Disk in White Light

Mon, 17 Mar 2025 10:59:00 +0000

Near the peak of Solar Cycle 25 the disk is busy: several sunspot groups, including long trailing chains of small spots, cross the photosphere in this white-light mosaic.

Captured as video panels, each stacked in AutoStakkert!3, sharpened in ImPPG and stitched into a mosaic.

A Prominence Arch with Earth for Scale

Tue, 29 Oct 2024 11:40:00 +0000

A large arch of prominence material rises from the limb. Distance rings at 50,000 km steps and a small Earth drawn to the same scale show how vast it is.

Captured as video panels, each stacked in AutoStakkert!3, sharpened in ImPPG and stitched into a mosaic.

A Sunspot Complex in White Light

Sat, 24 Aug 2024 14:09:00 +0000

A large sunspot with a broad, filamentary penumbra sits among smaller companion spots, all surrounded by the fine grain of solar granulation.

Captured as video, stacked in AutoStakkert!3 and sharpened in ImPPG.

H-alpha Limb Panorama

Mon, 10 Jun 2024 12:06:00 +0000

A wide panorama along the limb in H-alpha, taking in active regions, bright plage and dark filaments on the disk.

Captured as video panels, each stacked in AutoStakkert!3, sharpened in ImPPG and stitched into a mosaic.

AR3697 in Motion

Sat, 01 Jun 2024 12:04:00 +0000

Active region AR3697 in H-alpha: a group of sunspots, bright plage and swirling fibrils, with a long, curving dark filament sweeping across the lower part of the frame. Watching the sequence play shows how restless the chromosphere is, even over a few minutes.

Frames were captured as video, each stacked in AutoStakkert!3 and sharpened in ImPPG, then aligned and assembled into the time-lapse.

Active Region in H-alpha: May 2024

Tue, 21 May 2024 13:28:00 +0000

In H-alpha the sunspots of this active region sit within bright plage and a web of curving fibrils that trace the local magnetic field.

Captured as video panels, each stacked in AutoStakkert!3, sharpened in ImPPG and stitched into a mosaic.

ISS Transit Across the Sun

Sun, 09 Apr 2023 16:00:00 +0000

The International Space Station crosses the face of the Sun in a fraction of a second, so the transit is shown here as a sequence of frames merged into one composite, the station’s path running diagonally across the disk past a few sunspots.

Captured as video panels, each stacked in AutoStakkert!3, sharpened in ImPPG and stitched into a mosaic.

A Prominence Drifting off the Limb

Sat, 27 Aug 2022 14:13:00 +0000

A delicate, wispy prominence stands off the limb in H-alpha, its filaments of plasma shifting and drifting as the sequence plays. Along the edge of the disk, the ragged texture of spicules is visible.

Frames were captured as video, each stacked in AutoStakkert!3 and sharpened in ImPPG, then aligned and assembled into the time-lapse.