Astropy - Astronomy & Astrophysics

Astropy is more than a library; it's a community standard. It ensures that astronomical calculations are reproducible and physically consistent by linking numerical arrays with physical units and celestial reference frames.

When to Use

• Handling physical units and constants in calculations.
• Working with celestial coordinates (Right Ascension, Declination) and frame transformations.
• Reading/writing FITS (Flexible Image Transport System), ASDF, and VO (Virtual Observatory) files.
• Managing astronomical time scales (UTC, TAI, TDB, Julian Dates).
• World Coordinate System (WCS) mapping (pixels to sky coordinates).
• Cosmological calculations (distances, ages, Hubble parameters).
• Tabular data with attached units and metadata (astropy.table).

Reference Documentation

Official docs: https://docs.astropy.org/
Learn Astropy: https://learn.astropy.org/
Search patterns: astropy.units.Quantity, astropy.coordinates.SkyCoord, astropy.io.fits, astropy.time.Time