FITS Blaster

What it does

• Measures star quality — FWHM, eccentricity, SNR, star count, PSF Signal Weight, and sky background — directly from raw pixel data
• GPU-accelerated rendering of 16 MP+ FITS files with no perceptible lag
• Session chart with drag-to-select for fast batch culling
• Filter-aware grouping: Ha, OIII, SII, RGB, and more
• Auto-select with configurable thresholds
• Subfolder scanning for multi-night sessions
• Works fully offline — only a lightweight daily update check uses the network