Multimedia & graphics Windows

DeepSkyStacker for Windows

Calibrate, align and stack deep-sky photographs with DeepSkyStacker, a free Windows application for combining light frames with dark, flat and bias calibration frames.

WindowsFree and open source; BSD 3-Clause LicenseVersion 6.2.2
Operating system
Windows 10 and later (64-bit)
Architecture
x64
Download package
EXE installer
Download DeepSkyStacker for Windows (64-bit)

Selected publisher package: DeepSkyStacker-6.2.2-windows-x64-installer.exe. Separate Linux and macOS assets are not this download.

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What is DeepSkyStacker?

DeepSkyStacker prepares a combined image from a series of deep-sky exposures. Add your light frames and any matching dark, flat, dark-flat and offset/bias frames, register the pictures, then stack the selected frames. The picture list and preview help you inspect the files before processing; file groups keep material from different imaging sessions together.

The application includes RAW/FITS settings, automatic alignment, batch stacking and image-processing controls. Version 6.2.2 adds saturation and vibrance controls to the processing pane. This entry links to the stable Windows x64 installer rather than the separately listed 6.2.3 beta releases.

Plan for temporary disk space when stacking large sets. The manual warns that Drizzle can create images four or nine times larger and substantially increase memory and disk use. TIFF input support is also limited to uncompressed, LZW or ZIP/Deflate files. The screenshots are publisher documentation examples, not evidence that this installer was run or that they depict version 6.2.2.

What it offers

  • Register and stack light frames with dark, flat, dark-flat and offset/bias calibration frames.
  • Preview pictures, save and restore file lists, and organize imaging sessions into file groups.
  • Configure RAW/FITS decoding, alignment and stacking methods, including Drizzle.
  • Queue multiple stacking jobs with batch stacking.
  • Adjust saturation and vibrance in the 6.2.2 processing pane.

Good to know

  • Version 6.2.2 requires 64-bit Windows 10 or later; it does not support 32-bit Windows or older Windows releases.
  • Drizzle can produce images four or nine times larger, increasing memory and temporary disk-space requirements.
  • TIFF input supports uncompressed, LZW and ZIP/Deflate files, not every TIFF compression variant.

Product images

Sources

References used for this listing. Retrieval dates do not indicate hands-on testing.

  1. Release DeepSkyStacker 6.2.2 — publisher release notes ↗Retrieved
  2. DeepSkyStacker 6.2.2 — publisher asset listing ↗Retrieved
  3. DeepSkyStacker repository — authors and license ↗Retrieved
  4. DeepSkyStacker User's Manual — publisher documentation ↗Retrieved
  5. DeepSkyStacker FAQ — TIFF input restriction ↗Retrieved

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