HARP

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Installation ​

From PyPI:

bash
pip install harp-astro

The distribution is harp-astro; the installed package and the CLI command are plain harp.

From source:

bash
git clone https://github.com/szaghi/harp
cd harp
make dev

Network ​

HARP runs fully offline: the catalogues (Messier/NGC/IC, the Sharpless H II regions and their size concordance), the Solar System ephemeris for the Moon and planets, and the target web links are all built on disk with no run-time queries.

The one exception is harp plan --ss-moons (major natural satellites like Titan and the Galilean moons): it downloads a JPL satellite ephemeris on first use and therefore needs network access. It is off by default; the Moon-and-planets set requires nothing extra.

The vendored Sharpless data is regenerated from VizieR/SIMBAD only by the maintainer (pip install -e ".[catalog-build]", then tools/build_*.py) — never at run time or on install.