What you would be installing
A single Windows application, installed from an ordinary installer into its own folder. It runs offline: your images are processed on your machine and are never uploaded. The times it touches the network are visible to you: signing in if you hold a licence, fetching the price list and release notes from this site, downloading a Gaia catalogue or looking up a target when you ask, and run reports, which a release build asks about first and the beta sends by default, with a notice and an off switch.
Before running the Windows installer
The installer is not code-signed, so Windows SmartScreen may show “Windows protected your PC” (“Windows의 PC 보호”). First check the exact filename and SHA-256 below. If they match and you trust this source, choose More info → Run anyway (“추가 정보 → 실행”). If the hash differs, do not run the file; contact support@astrylstudio.com. A matching hash confirms the file matches this copy; it does not replace a security scan.
If antivirus software blocks or deletes the installer, contact the same address with the filename and warning text. Keep protection enabled.
SHA-256 · 23 September 2026 beta installer
setup_astrylstudio-0.1.0-beta-x64.exe
2b6718fb3293314ab37077265b5bb443ea67b4806521a4188b8f3d3aa26d6a8b
This checksum applies only to this named invitation build.
In the folder containing the downloaded file, open PowerShell and compare the returned Hash with the value above (letter case does not matter):
Get-FileHash -Algorithm SHA256 -LiteralPath '.\setup_astrylstudio-0.1.0-beta-x64.exe'
| Requirement | |
| Operating system | Windows 10 or 11, 64-bit. There is no macOS or Linux build, and none is promised. |
| Memory | 16 GB is a sensible floor. Integration holds each filter's frames in memory while it measures and aligns them, so very large sessions need more; the final combine reads from disk in chunks. |
| Graphics | No dedicated GPU required. Integrated graphics is what this is developed on. |
| Disk | Room for the frames you already have, plus the calibrated and registered copies the run writes beside them. |
| Formats | FITS and XISF in, FITS out, so a set prepared elsewhere opens here and the results open anywhere. |
Ask about using it
A short note about your rig and what you are working on. I reply myself, and send a build link if it looks like a fit.