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Siril is an astronomical image processing tool that allows users to calibrate, stack, and enhance astronomical images.

Siril is a free, open-source astronomical image processing tool designed for pre-processing and processing astronomic images. It offers a comprehensive suite of dedicated algorithms to calibrate, stack, and enhance astronomical images. The software is capable of handling biases, darks, and flats, improving signal-to-noise ratio through stacking, and offering tools for color calibration, deconvolution, and histogram stretching. Siril supports various file formats including SER videos and FITS-Cube, and it leverages multi-core processing for fast performance. It caters to both automated workflows via scripts and manual control for users who prefer fine-grained adjustments. With its astrometry interaction, Siril also enables scientific analysis of star brightness variation and object identification, making it a valuable tool for amateur and professional astronomers.
Siril is a free, open-source astronomical image processing tool designed for pre-processing and processing astronomic images.
Explore all tools that specialize in calibrating astronomical images using bias, dark, and flat frames. This domain focus ensures Siril delivers optimized results for this specific requirement.
Explore all tools that specialize in stacking multiple images to improve signal-to-noise ratio. This domain focus ensures Siril delivers optimized results for this specific requirement.
Explore all tools that specialize in removing unwanted signal and patterns from raw images. This domain focus ensures Siril delivers optimized results for this specific requirement.
Explore all tools that specialize in enhancing stacked images through color calibration and deconvolution. This domain focus ensures Siril delivers optimized results for this specific requirement.
Explore all tools that specialize in analyzing star brightness variation for scientific purposes. This domain focus ensures Siril delivers optimized results for this specific requirement.
Explore all tools that specialize in registering images using various methods including star alignment. This domain focus ensures Siril delivers optimized results for this specific requirement.
Siril uses deconvolution algorithms to sharpen astronomical images by reducing the effects of atmospheric seeing and optical aberrations, revealing finer details.
Siril natively processes SER (Sequenced image Recording) video files, allowing for deep-sky lucky imaging techniques, where short exposures are captured and stacked.
Siril allows users to automate processing workflows using scripts, enabling batch processing and custom image processing sequences.
Siril incorporates astrometry tools, allowing users to quickly identify objects in the image and access information about them.
Siril is designed to utilize all available CPU cores, significantly speeding up processing times, especially for large datasets and complex algorithms.
Download the appropriate Siril version for your operating system (Linux, Windows, macOS) from the official website.
Install Siril by following the installation instructions specific to your operating system.
Launch Siril and familiarize yourself with the user interface, including the menu options and toolbars.
Load your astronomical images or videos into Siril using the 'File' -> 'Open' option.
Calibrate your images by loading bias, dark, and flat frames and applying the calibration process.
Register your images using star alignment or other appropriate registration methods.
Stack the registered images to improve the signal-to-noise ratio and reduce noise.
All Set
Ready to go
Verified feedback from other users.
"Siril is a powerful, free, and open-source tool favored for its comprehensive features and performance in astronomical image processing. Users appreciate its ability to handle various file formats and complex tasks efficiently."
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Flickr is the best place to be a photographer online, offering a home for every photo to store, organize, curate, and share creativity.

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