Purpose-Built
A private FITS image and header workbench for HDU inventory, monochrome previews, stretch controls, pixel statistics, star-candidate measurement, and observation handoff.
One-time iPhone and iPad app
Astrosift
FITS images and headers
Core Features
- Open primary FITS image HDUs with common integer and float bit depths
- Inspect 80-character header cards and extension inventory
- Preview monochrome data with linear, square-root, or logarithmic stretch
- Measure background, saturation, centroid, FWHM, and candidate peaks
- Export a contact sheet, pixel statistics, and observation report
Private by Design
No account, subscription, ads, tracking, third-party analytics, or developer-operated backend. Core features work offline, and your work stays on device unless you deliberately share or export it.
Use It Responsibly
Astrosift is an inspection and planning tool, not a calibrated scientific pipeline. Verify photometry, world coordinates, debayering, and observatory-specific conventions elsewhere.