Downloads

Software & Data Downloads

Our Windows desktop apps: AstroSky for FITS astrophotography, GpuLLM for local LLMs, GpuAi for GPU checks, PhotoRestore Pro for restoring old photos and PhotoFilterLab for photo color grading — plus open FITS survey data from the Purple Mountain Observatory Milky Way Survey.

AstroSky

Windows desktop app for FITS astrophotography processing — intelligent auto-stretch, 12+ scientific color maps, RGB channel compositing and 8K export. GPU-accelerated and 100% offline.

Learn about AstroSky →

GpuLLM

Windows desktop app for local LLMs — chat, performance benchmarks, GPU monitoring and model evaluation (MMLU/C-Eval) with GGUF models, running 100% offline.

Learn about GpuLLM →

GpuAi

GPU health toolkit for Windows: spot fake or reflashed cards, check VRAM and temperatures, get verdicts for 30 games and a local-AI readiness score — fully offline.

Get it from Microsoft →Official page

PhotoRestore Pro

AI photo restoration studio for Windows: repair faded old photos, upscale to 4K and colorize black-and-white pictures in one click — fully offline.

Get it from Microsoft →Official page

PhotoFilterLab

Photo color studio for Windows: dozens of filters and six color studios, one-slider tuning and export in seconds — fully offline.

Get it from Microsoft →Official page

FITS Milky Way Survey

Download raw FITS astronomical data from the Purple Mountain Observatory's Milky Way Survey (银河画卷). This dataset contains wide-field molecular cloud mapping data suitable for research and astrophotography post-processing — published via the Science Data Bank (scidb.cn).

Go to Download →

Knowledge & References

FITS File Format

The Flexible Image Transport System (FITS) is the international standard for astronomical data — used by NASA, ESA, and all major observatories since 1981.

Source →

Open Data in Astronomy

Modern astronomy is built on open data. The Virtual Observatory (IVOA) connects over 20,000 public datasets from telescopes worldwide.

Source →

The Milky Way Survey

The Purple Mountain Observatory's Milky Way Survey (银河画卷) has mapped molecular clouds along 2,400 square degrees of the galactic plane using CO emission lines.

Source →

Frequently Asked Questions

What is the FITS Milky Way Survey?
The Milky Way Survey (银河画卷) is a large-scale astronomical survey conducted by the Purple Mountain Observatory, mapping molecular clouds along the galactic plane using CO emission line observations. The FITS data is publicly available via the Science Data Bank (scidb.cn) for research and educational use.
How do I open FITS survey data?
Use FastTool's free FITS Viewer to open and preview FITS files directly in your browser — no download or installation needed. For advanced processing, try AstroSky (Windows desktop app) or SAOImage DS9.

Related Tools

FITS Viewer — Open .fits files in your browser→Solar Insight — Plan your observation session→Telescope FOV — Pick the right eyepiece→

Desktop-app links open the corresponding Microsoft Store pages; the FITS data link points to an external data repository. FastTool does not host, track, or intermediate any download.

All tools on fastool.io run entirely in your browser — zero data leaves your device. No personal data is collected, stored, or transmitted to any server. Solar calculations use SunCalc.js; lunar data uses JPL DE440 ephemeris; coordinate transforms use publicly documented EPSG/OGC standards. This site requires no signup, no account, and no cloud processing.