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 Home » Freeware Downloads » Science, Engineering, GIS, Astronomy, Chemistry, Math, Weather » DeepSkyStacker v4.2.4   
File - Download DeepSkyStacker v4.2.4

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DeepSkyStacker v4.2.4

DeepSkyStacker is a freeware for astrophotographers that simplifies all the pre-processing steps of deep sky pictures.



Simple post-stacking processes to quickly view the final result.

Saving the resulting image to a TIFF or FITS file (16 or 32 bit)

After a shooting night you give all your pictures (light frames, darks frames, offset/bias frames, flat frames) to DeepSkyStacker and you go to bed. The next morning (or is it afternoon?) you can see the result and start post-processing.

DeepSkyStacker: Main Features

Automatic registration of a set of pictures

Automatic detection of stars using all the picture area

Preview of registered stars

Sub pixel registration

Automatic derotation

Automatic creation and use of offsets, flats and darks frames

Sub pixel alignment and stacking

Supported bitmaps formats : 8, 16 and 32 bit colour and monochrome TIFF files, 8, 16, 32 and 64 bit colour and monochrome FITS files, JPEG, BMP, PNG

Native use of RAW files from most DSLRs (CR2, NEF, CRW, DNG ...) without using an intermediate file format (TIFF or other).

Darks, Flats and Offsets computed from and applied directly to the RAW picture before any interpolation.

Stacking methods: average, median, kappa-sigma clipping, auto adaptive weighted average, entropy weighted average, maximum...

Preview of all pictures (including RAW)

Simple post-processing with RGB levels, luminance curve and saturation adjustments.

Save the resulting picture to 16 or 32 bit TIFF or FITS files with or without adjustments applied.

Simple and intuitive user interface

Optimal memory usage: the same amount of memory is required to register and stack 10 or 500 pictures.

Optimal usage of all available processors (hyperthreaded, multiprocessors, duo and quad core processors)

English, Spanish, French, Czech, Italian, Catalan, German, Dutch, Traditional Chinese and Portuguese/Brazilian versions

DeepSkyStacker: Advanced Features

Automatic determination of Darks, Flats and Offsets to be applied to the pictures using ISO speed and exposure time.

Several methods to optimize the RAW files processing by using the best of the Bayer matrix without interpolating the missing pixels.

Option to automatically detect hot pixels and during the registering process

Options to automatically detect and remove hot pixels and bad columns during the stacking process

Options to detect and clean hot and cold pixels remaining after calibration.

Automatic flat calibration to equalize luminosity differences

Automatic calibration of pictures background for each channel

Automatic Dark Optimization

Automatic use of a bicubic, bilinear or bisquared alignment transformation depending of the number of stars.

Creation of File Lists to speed up loading of often used files (darks, flats, offsets/bias...).

Comet Stacking

Manual edition of stars and comet positions

Drizzle option (x2 or x3) during the stacking process.

Possible use of B&W 16 bit FITS files like RAW files (automatic use of a Bayer Filter Pattern).

Use of File Groups to simplify multiple nights on the same object file management.

Options to create a calibrated and registered file for each light frame.


Cosmetic options to detect and clean remaining hot/cold pixels from calibrated images.

Feature to create Star Masks

Feature to batch multiple stacks

Command-Line version

What is not DeepSkyStacker?

DeepSkyStacker is not a post processing software with advanced options like noise reduction, wavelets, unsharp mask...

DeepSkyStacker cannot be used for planetary pictures registering and stacking.

This download is for the 64bit version. If you need the 32bit version, download here.

Click here to visit the author's website.
Continue below for the main download link.

Downloads Views Developer Last Update Version Size Type Rank
2,654 3,571 David Partridge Aug 11, 2020 - 11:33 4.2.4 16.49MB EXE 5/5, out of 35 Votes.
File Tags
DeepSkyStacker  v4.2.4  
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