how to names of stars identified in corr.fits

[Per Ljung]

Hi-

After astrometry reports success it lists identified stars in corr.fits, where the stars have DEC and RA values as well as an index number. How do I get the names (or id from a particular star catalog) of the stars? 

I looked in the reported index file (e.g. index-4118.fits) however this seems to only contain quad info and not star names.

Thx

[Dustin Lang]

Hi,

You are right, the 4100-series index files do not have information about the reference-catalog entry they came from.

Very few stars have "names" aside from catalog numbers.

If you use the 5200-heavy index files (look on http://data.astrometry.net/ ), then you can get Gaia information (Gaia id, mags, proper motions) by adding the "--tag-all" flag to your solve-field command.  This will add all this Gaia information to your RDLS and CORR files.

cheers,

dustin

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[Dustin Lang]

Hi there,

The online solver also provides this information -- if your image is solved by the index-5200 series files.  In that case, you will see that the RDLS and CORR files contain data from the Gaia catalog - if "ref_cat" is "G2" then it's a Gaia-DR2 star, with gaia sourceid = ref_id.

For images that are wider (in field-of-view), then probably the index-4100 series produces the solution.  I have not yet updated those files to contain the equivalent information (from the Tycho-2 catalog).  So using the local code won't help in that case.

cheers,

dustin

On Thu, Oct 17, 2024 at 10:12 PM Per Ljung <pbl...@gmail.com> wrote:

Thank you!! 

I have been using the online plate solver. I'll try to install it and run locally.

/Per

[Per Ljung]

Thank you!! 

I have been using the online plate solver. I'll try to install it and run locally.

/Per

On Sun, Oct 13, 2024 at 11:39 AM Dustin Lang <dstn...@gmail.com> wrote: