astropy

authentic

Core Python library for astronomy and astrophysics workflows that need Astropy APIs, including units/quantities, coordinates, FITS I/O, tables, time systems, WCS, and cosmology. Use when implementing or debugging astronomical data analysis code with Astropy.

When to use

Converting between celestial coordinate systems (ICRS, Galactic, FK5, AltAz, etc.)
Working with physical units and quantities (converting Jy to mJy, parsecs to km, etc.)
Reading, writing, or manipulating FITS files (images or tables)
Cosmological calculations (luminosity distance, lookback time, Hubble parameter)
Precise time handling with different time scales (UTC, TAI, TT, TDB) and formats (JD, MJD, ISO)
Table operations (reading catalogs, cross-matching, filtering, joining)
WCS transformations between pixel and world coordinates
Astronomical constants and calculations

Skill page

Source

Repository	Path
K-Dense-AI/scientific-agent-skills	`skills/astropy/SKILL.md`