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Kat @quantumkat.bsky.social · 29/08/2026

The colours of late summer in south West of France #BlueSkyArtShow #Summer #photography

A harvested field under a deep blue sky, with large round hay bales leading toward a small stone village in the distance. The foreground is softly isolated by a shallow depth of field.

Kat @quantumkat.bsky.social · 22/08/2026

Ho Chi Minh City, where chaos has its own traffic rules. Hundreds of trajectories, almost no apparent order, and somehow it flows. #BlueSkyArtShow #Chaos #photography

A busy intersection in Ho Chi Minh City, Vietnam, crowded with motor scooters. Several riders sweep across the foreground while a dense stream of motorcycles fills the street behind them. Narrow, mismatched buildings rise above the traffic, packed with balconies, shop signs, awnings, air conditioners and overhead wires. The scene looks chaotic at first glance, yet the riders move through it with a striking sense of rhythm and coordination.

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Kat @quantumkat.bsky.social · 22/08/2026

Chaos, organized by magnetism. Plasma twists, erupts and flows across the solar chromosphere, shaped by forces we can only see through the structures they create. Our star, caught in a restless moment. #BlueSkyArtShow #Chaos #photography [details in Alt-text]

$Captured with a Sony A7S on a TS61EDPH, a 61 mm apochromatic refracting telescope, using a DayStar Quark Chromosphere. The Quark is a very narrow-band H-alpha solar filter centered on the hydrogen-alpha emission line at 656.28 nm, isolating light from the solar chromosphere and revealing filaments, plages and prominences that are largely invisible in ordinary white-light images. The final image combines 500 short exposures, aligned, stacked and reconstructed with my own Python processing code based on torchMFBD, a PyTorch implementation of multi-frame blind deconvolution. MFBD uses information from many differently distorted frames to jointly estimate the underlying solar image and compensate for atmospheric seeing and optical blur. The solar disk and the region outside the limb were processed separately: a restrained treatment preserves detail and contrast across the chromospheric surface, while a much stronger intensity stretch outside the disk reveals the far fainter prominences around the Sun's edge.$

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Kat @quantumkat.bsky.social · 20/08/2026

Just to give a sense of scale: Earth is shown here at the correct relative size beside the Sun. Prominences extend several Earth diameters above the solar limb. #SolarImaging #HAlpha #Astrophotography

Close-up H-alpha image of the Sun’s limb with a large solar prominence extending into space. A small image of Earth is placed beside it at the correct relative scale, showing how the prominence spans several Earth diameters. A label notes that the Sun’s diameter is approximately 109 times that of Earth.

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Kat @quantumkat.bsky.social · 20/08/2026

Still refining my ultra-narrowband H-alpha solar imaging technique. 500 frames with a Sony A7S + TS61EDPH + Quark Chromosphere. I'm tuning my Python post-processing script around torchMFBD blind deconvolution (github.com/aasensio/tor...) #SolarImaging #HAlpha

$Full-disk view of the Sun imaged in ultra-narrowband hydrogen-alpha light. The orange-red solar disk shows the dense, filamentary texture of the chromosphere across its entire surface, with several bright active regions and small dark filaments. Prominences extend beyond the limb, particularly on the left and lower-right edges. The image was produced from 500 frames captured with a Sony A7S, TS61EDPH refractor and Quark Chromosphere filter, then restored using torchMFBD deconvolution.$

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Kat @quantumkat.bsky.social · 18/08/2026

Late post! My Aug 12 total solar eclipse timelapse from Spain. Frame alignment was a headache, none of my usual tools worked, so I ended up doing it manually before assembling the video. Sony A7S + Quark Chromosphere + TS61EDPH #Eclipse2026 #Astrophotography

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Kat @quantumkat.bsky.social · 17/08/2026

Totality over the Basque Country, Spain. 12 August 2026, 20:28. #SolarEclipse #Eclipse2026 #TotalSolarEclipse

Three people sit and kneel beside a lake in the Spanish Basque Country, watching and photographing a total solar eclipse. The eclipsed Sun glows in a hazy evening sky, with its warm reflection stretching vertically across the water toward the observers. Dark wooded hills line the far shore.

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Kat @quantumkat.bsky.social · 15/08/2026

Early morning, just after sunrise. Quiet water, distant mountains, and earth underfoot. #BlueSkyArtShow #Earth #photography

Early-morning view just after sunrise of a calm lake beneath a wide blue sky with streaks of white and gray clouds. A dark, muddy shoreline curves into the water in the foreground, with hazy mountains stretching across the distant horizon.

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Kat @quantumkat.bsky.social · 14/08/2026

Finally, at the very last minute, I decided on a 10-hour road trip to Spain to be in the path of totality. #Earth, Moon, Sun. A perfect alignment. 📷 : TS61EDPH, Sony A7S and Quark Chromosphere. #BlueskyArtShow

A sequence of solar eclipse phases against a deep black sky, from a partially covered Sun to an extremely thin glowing crescent just before totality. The orange-red solar disk and delicate prominences trace the Moon’s passage across the Sun.

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Kat @quantumkat.bsky.social · 03/08/2026

Just our Sun Getting ready for the August 12 eclipse, partial from my location. First light with my Quark Chromosphere (ultra-narrowband Ha). * Unfiltered Sony A7S + TS61EDPH * 120 images stacked Still some work to do on capture and processing, I’m completely new to this! #Astrophotography

False-colour H-alpha image of the full solar disc glowing orange against a black background. Fine chromospheric texture covers the surface, with dark filaments, sunspots, bright active regions and several prominences along the upper-left limb.

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Kat @quantumkat.bsky.social · 25/07/2026

In Murano, just across the water from Venice, Watching glass come out of the furnace still glowing. #BlueSkyArtShow #Glass #photography

Close-up of a glowing glass furnace in a Murano workshop. A long metal rod enters from the left, holding a dark, molten gather of glass against the brilliant white-orange opening, surrounded by scorched industrial machinery.

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Kat @quantumkat.bsky.social · 11/07/2026

First light at the Marais d’Orx. At 5 a.m., the world is still holding its breath. #BlueSkyArtShow #Quiet #photography #art

The half-risen sun glows orange above a dark tree line at the Marais d’Orx. A thin layer of mist hangs over copper-colored water as two birds fly low across the still surface.

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Kat @quantumkat.bsky.social · 27/06/2026

A candle breathing. Schlieren photography reveals the invisible currents of hot air rising above the flame. #BlueSkyArtShow #Macro #Photography More details 👇

Schlieren photograph of a small candle flame against a dark background. The image is mostly black and white, except for the orange flame. Bright, twisting ribbons rise above it, revealing the changing density and turbulent movement of the heated air.

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Kat @quantumkat.bsky.social · 27/06/2026

A crowded flower, and everyone wants the best seat 🌼🐝 #BlueSkyArtShow #Macro #Photography #BNWmacro

Macro photograph of a small dark bee standing on the bright yellow centre of a white daisy. A second tiny insect rests on a petal to the left, while another dark, blurred insect is partly visible behind the flower. The scene is sharply detailed against a smooth green background.

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Kat @quantumkat.bsky.social · 20/06/2026

A quiet curve in the field. #BlueSkyArtShow #Curve #photography #blackandwhite Let’s see if this one gets labeled 😂

Black-and-white photo of a cow grazing in a field, seen from a low angle. Its back and lowered neck form a strong curve against the bright sky. Other cows and a farm building appear in the distance.

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Kat @quantumkat.bsky.social · 20/06/2026

Cosmic Curves 🔭 M27, the Dumbbell Nebula, 📷 Newton 130/900 and Sony A7S. M27 glows as its white-dwarf core ionizes the star’s expanding outer layers. @kat-astro-bot.bsky.social what do you see ? #BlueSkyArtShow #Curve #astrophotography #photography #M27 #DumbbellNebula

A wide-field astrophotograph of Messier 27, the Dumbbell Nebula, surrounded by a dense field of stars against a nearly black sky. The nebula is positioned near the center of the frame and appears as a softly glowing, irregular oval with two broad opposing lobes. Its brightest inner region is pale blue, cyan, and milky white, with translucent layers of gas overlapping around the faint central star. Curved reddish-pink arcs form parts of the outer shell, especially along the upper-left and lower-right edges, creating a rounded, expanding structure around the cooler blue interior. Fainter blue-green gas extends beyond the bright core as a diffuse halo. Hundreds of stars of different brightness fill the background, from tiny sharp points to several larger white stars with subtle four-point flares. Many stars show slight red and cyan fringes, adding small touches of color throughout the otherwise dark field. Captured with a Newton 130/900 telescope and a Sony A7S camera.

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Kat @quantumkat.bsky.social · 16/05/2026

I usually point this 300mm lens toward the stars, but with a macro adapter it found a whole morning in a single drop of dew #BlueSkyArtShow #Morning #photography

Close-up color photograph of a clear dew drop hanging from the underside of a narrow green leaf or blade of grass. The drop reflects blurred green plant shapes inside it. The background is an out-of-focus bright green field of color.

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Kat @quantumkat.bsky.social · 16/05/2026

Morning on the Algarve coast: a fisherman makes his way along the rocks. #BlueSkyArtShow #Morning #photography

Black-and-white photo of a fisherman walking away along a rocky coastal path in the Algarve, Portugal. He wears a plaid shirt and cap, carries a woven basket in one hand, and holds fishing gear in the other. Large rocks line the foreground, calm seawater is to the right, and steep cliffs with houses, palm trees, and other vegetation rise in the background.

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Kat @quantumkat.bsky.social · 02/05/2026

Miniature winter silhouettes, shaped by fog and focus. Shot with a tilt-shift lens to create a tiny-world effect. #BlueSkyArtShow #ShadowPlay

Black-and-white tilt-shift photograph of a foggy field with two dark, leafless trees. One tree in the foreground is blurred into a soft silhouette, while the smaller tree to the right is sharper, its bare branches spreading like delicate shadows against the pale mist.

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Kat @quantumkat.bsky.social · 25/04/2026

Murano, where reflections reshape reality #odd #blueskyartshow

A layered black-and-white scene where a shop interior blends with reflections of a canal and bridge, creating a surreal overlap of spaces.

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Kat @quantumkat.bsky.social · 16/04/2026

Under watch Shanghai International Convention Center Trying to contribute to #postprocessing challenge

Person walking across a modern plaza in Shanghai while pulling a suitcase, overlaid with colorful pixelated blocks resembling a heatmap.

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Kat @quantumkat.bsky.social · 04/04/2026

A row of quiet openings, the day just beginning to unfold in Venice. #BlueSkyArtShow #Openings #photography

Photograph of a historic Venetian arcade with a series of open wooden doors and shopfronts beneath arched ceilings, warm light casting long shadows across the stone walkway.

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Kat @quantumkat.bsky.social · 28/03/2026

Around the Iris Nebula, faint cosmic dust (IFN) glows with the light of the Milky Way itself, turning the background into the subject. @kat-astro-bot.bsky.social What do you see ? #BlueSkyArtShow #Background

Dense starfield surrounding the Iris Nebula, with a bright bluish core embedded in dark, wispy dust clouds and faint integrated flux nebula softly glowing across the background.

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Kat @quantumkat.bsky.social · 19/03/2026

To contribute to #HumansOfBlueSky : A traditional Chinese medicine shop in Chợ Lớn, Saigon.

Black-and-white photo of a man in a traditional Chinese medicine shop in Chợ Lớn, Saigon, sorting a mound of dried herbs beside large sacks of herbal goods, with shelves and containers fading into the dim background.

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Kat @quantumkat.bsky.social · 16/03/2026

Percy Pink memorial marking a WWII Special Operations Executive parachute drop site in rural Dordogne, France. #ColorADay #PinkMon (ALT-TEXT for details)

This memorial marks a parachute insertion site used during World War II by agents of the British Special Operations Executive operating in southwestern France. It commemorates Percy Pink, who was parachuted into the countryside of Dordogne to assist and coordinate with the French Resistance.

SOE agents were inserted by night aircraft into isolated rural areas such as this one, where resistance groups secured landing zones and helped recover parachuted personnel, radios, weapons, and supplies. Once on the ground, agents like Pink organized local maquis groups, coordinated sabotage against German transport and communications, and prepared resistance forces to assist Allied operations following the D-Day.

The pink parachute symbol on the memorial represents the clandestine airborne insertion method used by SOE operatives. Such markers across rural France identify locations where agents landed or where resistance networks operated in support of the Allied campaign to liberate the country.

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Kat @quantumkat.bsky.social · 15/03/2026

Porte Cailhau, Bordeaux, Tilt-shift lens

Black and white street photograph of a person in a coat and cap walking across a square in Bordeaux, passing in front of the medieval Porte Cailhau tower, with the historic stone gate and surrounding buildings softly blurred in the background.

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