Features
From FITS Files to Beautiful Images
Astronomy's Snapseed — simple, instant feedback, visually driven. Complex parameters hidden in advanced options, zero-barrier default experience.
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Batch FITS Import
Drag and drop multiple FITS files or entire folders. Parallel loading with real-time progress. Supports .fits, .fit, .fts extensions and multi-extension FITS files.
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Auto Smart Enhance
One-click Auto button analyzes histogram shape (unimodal/bimodal/long-tail) and automatically selects the optimal stretch algorithm, color map, and black/white point combination.
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Rich Color Maps
Choose from Viridis, Plasma, Inferno, Magma, Hubble Palette, and more. Each color map includes a gradient preview swatch. All maps are perceptually uniform and colorblind-friendly.
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Live Histogram
Real-time 256-bin histogram visualization with black/white point markers. Drag sliders and see instant 200ms preview refresh — no waiting.
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Beauty / Science Dual Mode
Beauty Mode hides scientific noise for a clean creative experience. Science Mode expands full analysis tools — beam overlay, pixel readout, PV diagrams, channel maps — toggle in ≤100ms without reloading.
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RGB Channel Synthesis
Assign R/G/B channels to different FITS images via hover buttons on thumbnails. Synthesize multi-band composite images with per-channel stretch and weight controls.
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Wallpaper Export
Export to PNG/JPEG/FITS with preset resolutions from 1080p to 8K. Optional watermark with telescope model, observation band, and integration time. Author signature support.
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Sky Info & Celestial Database
Auto-recognizes coordinates (Galactic/Equatorial) from WCS headers. Built-in offline database of 800+ celestial objects (Messier, NGC, IC) with plain-language descriptions. Aitoff projection sky minimap.
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FITS Header Viewer
Searchable three-column table (keyword/value/comment) for all FITS header entries. One-click value copy. Multi-extension support with extension switcher.
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Science Tools
Moment maps, image algebra, position-velocity diagrams, channel maps for data cubes (NAXIS=3). Beam ellipse overlay from BMAJ/BMIN header keywords. Pixel value readout on hover.
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Undo / Redo
Full parameter undo/redo stack via Ctrl+Z / Ctrl+Y. Every adjustment is tracked and reversible. Non-destructive processing — original FITS data is never modified.
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7-Language Localization
Full UI localization for English, Japanese, German, French, Spanish, Portuguese, and Russian. Switch languages at any time from Settings without restart.
