![]() LIGHT version built from Tycho-2 + Gaia-DR2, good for images narrower than 1 degree, combine with 4100-series for broader scale coverage, the LIGHT version contains smaller files with no additional Gaia-DR2 information tagged along, recommended Nameīuilt from the Tycho-2 catalog, good for images wider than 1 degree, recommendedīuilt from the near-infared 2MASS survey, runs out of stars at the low end, most users will probably prefer 4100 or 5200Īn older version from Gaia-DR2 but without Tycho-2 stars merged in, our belief is that series_5200 will work better than this one You should cite works from if you use the algorithm via this package. This library works on Linux and macOS, but not Windows (at the moment). Stars must be provided as a list of pixel positions. Unlike, Astrometry does not include FITS parsing or image pre-processing algorithms. ![]() See for a more complete self-hosting solution. This package is useful for solving plates from a Python script, comparing star extraction methods, or hosting a simple local version of with minimal dependencies. Return early if the three best matches are similarĪstrometry turns a list of star positions into a pixel-to-sky transformation (WCS) by calling C functions from the library ( ).Ī star index files ("series") are automatically downloaded when required.Return early if there are at least ten matches.Return early if the best log-odds are larger than 100.0.Stop the solver early using the log-odds callback.Print series description and size (without downloading them).Calculate field stars pixel positions with astropy.Print progress information (download and solve).
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