Siril has become, in just a few years, one of the essential tools of modern astrophotography. Free, open-source, and cross-platform, it offers both amateurs and advanced users processing capabilities comparable to professional software, while preserving a core philosophy: revealing the sky without distorting it.
In this book, Cyril Richard (research engineer at the CNRS and principal developer of Siril) provides a complete and structured exploration of the software. From installation to advanced processing, including scripting, scientific analysis, and complex practical case studies, each step is explained with rigor and clarity:
- Preprocessing: calibration, alignment, stacking, multisession workflow.
- Processing: gradient extraction, color calibration, deconvolution, noise reduction, histogram transformations, etc.
- Analysis: aberration inspection, photometry, astrometry, PSF, etc.
- Siril and Python scripting: automation, customization, advanced methods.
- Case studies: L-RGB, SHO, dual-band, mosaics, moving objects, comets.
Illustrated with numerous examples and supported by the expertise of one of the software’s key developers, this book is a reference guide for mastering Siril and transforming your raw data into reliable, aesthetically compelling, and scientifically usable astronomical images.
To support learning, several complete datasets (ranging from images taken with a DSLR camera to acquisitions made with a 500 mm telescope) are available for free download. They allow readers to follow the book’s examples step by step, reproduce each processing workflow, and independently explore all of Siril’s features. A true practical toolkit for progressing quickly, comparing different approaches, and practicing on well-documented real-world cases.
An essential resource for anyone who wants to understand, improve, and make the most of their nights under the stars!
Editeur : Axilone – Astronomy
ISBN: 979-10-92974-12-6
Publication date : May 2026
Language : English
Nb of pages : 192 pages
Dimensions: 21 x 29,7 cm
Price : 49 EUR
Find the Siril software at siril.org
Foreword by Christian Buil
PDF file (2 pages)
Table of content
PDF file (3 pages – 1,8Mo)
The Frequently Asked Questions…
When will I receive my order?
We have received a (very) large number of pre-orders. We estimate that it will take us 4 days to ship them all. They will be processed in the order received, from May 15 through May 20. After that, all orders will be processed within 24 to 48 hours.
Where do I enter the shipping address?
If you placed an order using PayPal, PayPal provides us with the shipping address associated with your PayPal account. If this address is no longer valid, please feel free to contact us by email at contact@axilone.com, making sure to include your name and the correct address.
Likewise, if your address has changed since placing your order, please notify us by email at contact@axilone.com.
Which version of Siril is suitable for the book?
The book is based on version 1.4 of Siril, which is the latest version of the software.
On which website can I order the book?
You are on the right website! You can place your order using the “Order” button located a little higher up on the page.
Can the book be found on Amazon or at a bookstore?
The book will not be sold on Amazon because of the very high percentage taken by Amazon.
It will be available only through certain Astrosurf partners, but only from the end of 2026.
Are there versions of the book available in English or other languages?
A French version has been available since November 2025, but versions in English, Spanish, German, and Italian are planned.
and will be available at the end of 2026.
How can I obtain a receipt or an invoice for my order?
You can request an invoice by simply sending an email to contact@axilone.com, specifying the name and address to which the invoice should be issued.
Is there a digital (PDF) version of this book?
No, we do not plan to release a digital version.
Is the book suitable for beginners?
This book is intended for all audiences, from beginner amateur astronomers to experienced astrophotographers.
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