v0.4.0 — Deep Sky

Deep Sky Catalogs

This release adds comprehensive support for deep sky object catalogs and observation planning.

New Catalogs

• NGC Catalog — ~7,840 deep sky objects (galaxies, nebulae, clusters)
• IC Catalog — ~5,386 objects from the Index Catalogue supplements
• Caldwell Catalog — 109 southern sky showpieces
• Hipparcos Star Catalog — ~118,000 stars with precise astrometric data

Cross-Catalog Finder

Unified search across all catalogs with filtering by:

• Object type (galaxies, nebulae, clusters, stars)
• Constellation
• Magnitude
• Name or description

starward find search "orion"
starward find galaxies --mag 10
starward find in Cyg

Observation Lists

Create and manage custom observation lists:

starward lists create "Tonight"
starward lists add "Tonight" M31 --notes "Check visibility"
starward lists show "Tonight"
starward lists export "Tonight" --format csv

Visibility Calculations

All catalogs support visibility calculations:

• Current altitude
• Rise/set times
• Transit time and altitude
• Airmass

Documentation

• Complete CLI reference for all new commands
• Python API documentation for programmatic access
• Educational comments explaining astronomical concepts

Full Changelog

• feat: add NGC catalog module
• feat: add IC catalog module
• feat: add Caldwell catalog module
• feat: add Hipparcos star catalog
• feat: add cross-catalog finder
• feat: add custom observation lists
• docs: comprehensive v0.4 documentation
• docs: educational code comments