ASI174MM
The Sun in White Light: July 2026
A full-disk white-light mosaic of the Sun, with sunspot groups scattered across the photosphere.
Filaments and an Active Region: April 2026
A monochrome H-alpha mosaic with a winding filament, a sunspot and bright plage.
Twisted Fibrils Around a Spot Group
A monochrome H-alpha view of a sunspot group surrounded by bright plage and twisting fibrils.
Sunspot, Plage and Fibrils in H-alpha
A monochrome H-alpha mosaic of a sunspot with surrounding bright plage and a dense web of fibrils.
Prominence over the Limb: May 2025
A colored H-alpha time-lapse of a prominence rising over the limb, with the chromosphere's granular texture below.
A Serpentine Filament in H-alpha
A colored H-alpha view of a long, S-shaped filament curving across the chromosphere near the limb.
Limb Prominence and Chromospheric Texture
An H-alpha view of the limb, with prominence material above the chromosphere's fine granular texture.
Jupiter: Late-Apparition Detail
One of the final Jupiter captures of the 2024-2025 apparition, still resolving fine belt structure and small dark spots.
A Spotted Solar Disk in White Light
A full-disk white-light mosaic with long chains of sunspots crossing the disk.
Mars: Late-Season Detail
The smallest and last Mars capture of the 2025 apparition, still resolving a bright polar cap and a faint dark marking.
Venus: A Razor-Thin Crescent
One of the sharpest captures in the collection: Venus reduced to an extremely thin, bright crescent just before inferior conjunction.
The Moon's South Pole Region
A dramatic grazing-light view of the lunar south pole, its terrain thrown into sharp relief.
The Moon and Mare Nectaris
A sharp close-up of Mare Nectaris and its surrounding highlands along the terminator.
The Moon and Vallis Rheita
A sharp close-up of Vallis Rheita, a long valley of overlapping secondary craters near the southeastern limb.
Venus: A Thin Crescent
Venus in a striking thin crescent phase, growing larger as it approaches inferior conjunction.
Mars: A Shrinking Disk
Mars noticeably smaller a month past opposition, its disk wrapped in a bluish limb haze with dark markings still visible across the center.
Mars: A Broad Dark Region
A broad, diffuse dark region spanning much of Mars's disk, with a small polar cap still visible at the limb.
Jupiter: Turbulent Festoons and a Bright Oval
A single night's Jupiter session paired with a short rotation video, showing turbulent cloud festoons and a bright white oval in the South Equatorial Belt.
Mars: Softening Detail Post-Opposition
Mars continuing to recede from Earth, its disk softening as faint dark markings trail along the southern limb.
Jupiter: The Great Red Spot Near the Limb
The Great Red Spot approaching Jupiter's western limb, with strong turbulence in the surrounding cloud deck.
Mars: Polar Cap in Sharp Relief
Mars just past opposition, with a vivid blue-white polar cap and a compact dark marking still well resolved.
Mars: A Different Rotational Face
Still near opposition, but showing a different side of Mars thanks to the planet's roughly 24.6-hour rotation.
Mars Near Opposition
Mars at its largest and brightest, captured right around the January 2025 opposition with a prominent dark marking and polar hood.
Jupiter: The Great Red Spot at Central Meridian
The Great Red Spot crossing Jupiter's central meridian, framed by richly colored equatorial belts.
Mars with a Bright Polar Hood
Mars closing in on opposition, with a prominent blue-white north polar hood and a subtler dark surface marking.
Jupiter: The Great Red Spot in Sharp Detail
One of the sharpest captures in the collection: the Great Red Spot in vivid orange, with three Galilean moons in the same frame.
The Moon and Mare Crisium
A sharp mosaic of Mare Crisium, an isolated lava plain near the Moon's eastern limb, along the terminator.
Mars: Surface Detail Sharpens
A sharper, slightly larger Mars a few weeks before opposition, showing distinct dark markings across its disk.
Jupiter: Scalloped Cloud Bands
Rich rust and cream cloud bands with a scalloped, wave-like boundary along Jupiter's South Equatorial Belt.
Uranus
The ice giant Uranus as a small, featureless teal-green disk.
Mars: Early Approach to Opposition
Mars still small in apparent size, weeks before the January 2025 opposition, with a dark surface marking and a bright north polar hood.
Jupiter: Fine Detail in the Equatorial Belts
Braided belt structure, small white ovals and subtle dark barges resolved across Jupiter's disk.
A Prominence Arch with Earth for Scale
A large looping prominence over the limb with distance rings and a to-scale Earth for comparison.
The Moon and Montes Apenninus
A sharp close-up of the Apennine Mountains, the Moon's most prominent mountain range, with a large crater nearby.
The Moon's Polar Region
A close-up of the lunar polar region, its rugged, heavily cratered terrain in sharp relief.
The Moon and Copernicus
A dramatic close-up of Copernicus, one of the Moon's most prominent rayed craters, near the terminator.
The Moon: A Cratered Terminator
A sharp close-up along the terminator, showing a dense field of craters in high relief.
The Moon and Clavius
A close-up of the southern limb showing the vast crater Clavius and dramatic terminator relief.
The Moon and Rupes Recta
A sharp close-up of the Straight Wall (Rupes Recta), one of the Moon's most famous linear surface features.
A Mineral Moon at Waning Gibbous
A second mineral-color rendition of the Moon, its waning gibbous phase revealing the same titanium-rich maria in cool blue tones.
A Sunspot Complex in White Light
A large sunspot with a wide penumbra and smaller companion spots, set in granulated photosphere.
H-alpha Limb Panorama
A wide H-alpha panorama along the solar limb with active regions, plage and filaments.
AR3697 in Motion
An H-alpha time-lapse of active region AR3697, with bright plage, a sunspot group and a long dark filament.
A Mineral Moon
A deep-color rendition of the Moon revealing subtle mineral variations across its surface, normally invisible to the eye.
Active Region in H-alpha: May 2024
A colored H-alpha mosaic of a sunspot-rich active region with bright plage and swirling fibrils.
The Moon, Montes Apenninus and Eratosthenes
The Apennine Mountains, the Moon's most prominent range, meeting the crater Eratosthenes at their western foot.
The Moon, Plato and Montes Alpes
Plato's dark, smooth floor and the rugged Montes Alpes range, rising sharply from the northern shore of Mare Imbrium.
The Moon and Gassendi
A sharp close-up of Gassendi, a large crater with a fractured floor on the northern shore of Mare Humorum.
The Moon: Copernicus and Its Ejecta
A close-up of Copernicus and the hummocky ejecta blanket surrounding it, secondary craters and debris chains radiating outward.
The Moon and Sinus Iridum
A tighter close-up of Sinus Iridum, the 'Bay of Rainbows,' its arcing rim caught in dramatic low-angle light.
The Moon, Sinus Iridum and Plato
A sharp close-up of the bay of Sinus Iridum and the walled plain Plato, their rims caught in dramatic low-angle light.
The Moon: A Long Terminator Mosaic
A tall multi-pane mosaic tracing the terminator from the crater Plato in the north down to Copernicus in the south.
ISS Transit Across the Sun
The International Space Station crossing the solar disk, shown as a sequence of frames in a single composite.
A Prominence Drifting off the Limb
A time-lapse in H-alpha of a wispy prominence standing off the solar limb.