Ninety seconds of sky,
one frame of silence.
Hold still, press once. Halcyon aligns the stars as the earth turns and quietly removes the noise between them.
Halcyon is a fictional night-photography app that stacks a hundred short exposures into one clean frame. Move your cursor across the grid; each tile lights up like a sensor catching starlight.
Hold still, press once. Halcyon aligns the stars as the earth turns and quietly removes the noise between them.
Auto-bracketing from 1/4 s to 30 s, chosen by the light it finds.
Moonlit cliffs and a lit window, both holding detail.
Every stack is processed on the phone. Nothing leaves unless you send it.
"I stood on a jetty for two minutes and came home with the Milky Way over my grandmother's lighthouse."Teodor V., amateur astronomer
The sensor sleeps between frames, so a long session barely dents the charge.