Nightscape Stacker
Local browser processingGuide ↗

YOUR NIGHT, A LITTLE CLEARER

From a sequence to a keeper.

Align the stars. Keep the foreground. Export a 16-bit TIFF.

Browser betaChecking export access…
  1. Import photos
  2. Mark the sky
  3. Export your stack

Mark the sky

Import a sequence to get started.

Your photos stay here.

Choose a fixed-tripod sequence. Nothing is uploaded to a photo server.

—

Click a few points along the horizon from left to right, then Apply sky. Green marks the sky.

Advanced settings
Mark the sky first
Photo requirements & things to check

Use a fixed tripod, matching dimensions and exposure settings, and sRGB color. This beta does not support RAW files, tracked skies, or panoramas.

JPEG and PNG have 8-bit source precision; 16-bit export cannot recreate missing detail. Check fine branches, moving clouds, lens distortion, and water carefully. Report a problem.

A simple sequence, one frame at a time.

  1. Import: choose 3–30 files from one fixed-tripod sequence. Use matching dimensions, exposure settings, and sRGB color.
  2. Choose a foreground photo: the first compatible photo is selected for you. Choose another if its foreground looks better. Exclude blurred or cloudy frames.
  3. Mark the sky: click along the horizon and select Apply sky. Paint green over sky; erase it from the foreground. Hold Space to pan. Scroll to zoom.
  4. Stack: stars are aligned before averaging the sky in linear light. The selected foreground is retained.
  5. Inspect: compare reference/result and inspect corners and edges at 100% before downloading the TIFF.

Photos are decoded and processed in a worker on this device. This beta does not import camera RAW or automatically separate tree branches. Reloading or closing the page ends a running job; save a project to keep your mask.

Inspect actual pixels

A crop decoded from the full-resolution image, displayed at one image pixel per screen CSS pixel. Scroll inside a crop if needed.

Loading full-resolution crop…

Reference

Stacked result

Stack the sequence to compare a result.

Look for doubled stars, stretched corners, color changes, and bright or dark seams near the horizon. These previews are 8-bit for display; the downloadable TIFF retains 16-bit output samples.