Trying to get the number of objects not found in a crossmatch












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So, using the astropy python module I'm trying to crossmatch a list of objects with simbad. Using astroquery I'm getting a certain number of results and errors telling me no astronomical object found and that these are recorded in the 'errors' attribute of the result table. I want to make an HR plot of my list of objects and then overlay the number of objects recovered in my crossmatch but I can't seem to figure out where to get these objects which weren't recovered in my crossmatch.



Another function I could use is XMatch.query(), as I think that might return a combined table, rather than query_region() which simply returns the objects that were found. I can't figure out how to get that function working however.



Any thoughts on how to go about this?






python-3.x astronomy astropy astroquery







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    So, using the astropy python module I'm trying to crossmatch a list of objects with simbad. Using astroquery I'm getting a certain number of results and errors telling me no astronomical object found and that these are recorded in the 'errors' attribute of the result table. I want to make an HR plot of my list of objects and then overlay the number of objects recovered in my crossmatch but I can't seem to figure out where to get these objects which weren't recovered in my crossmatch.



    Another function I could use is XMatch.query(), as I think that might return a combined table, rather than query_region() which simply returns the objects that were found. I can't figure out how to get that function working however.



    Any thoughts on how to go about this?






    python-3.x astronomy astropy astroquery







    share|improve this question

























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      0








      So, using the astropy python module I'm trying to crossmatch a list of objects with simbad. Using astroquery I'm getting a certain number of results and errors telling me no astronomical object found and that these are recorded in the 'errors' attribute of the result table. I want to make an HR plot of my list of objects and then overlay the number of objects recovered in my crossmatch but I can't seem to figure out where to get these objects which weren't recovered in my crossmatch.



      Another function I could use is XMatch.query(), as I think that might return a combined table, rather than query_region() which simply returns the objects that were found. I can't figure out how to get that function working however.



      Any thoughts on how to go about this?






      python-3.x astronomy astropy astroquery







      share|improve this question














      So, using the astropy python module I'm trying to crossmatch a list of objects with simbad. Using astroquery I'm getting a certain number of results and errors telling me no astronomical object found and that these are recorded in the 'errors' attribute of the result table. I want to make an HR plot of my list of objects and then overlay the number of objects recovered in my crossmatch but I can't seem to figure out where to get these objects which weren't recovered in my crossmatch.



      Another function I could use is XMatch.query(), as I think that might return a combined table, rather than query_region() which simply returns the objects that were found. I can't figure out how to get that function working however.



      Any thoughts on how to go about this?






      python-3.x astronomy astropy astroquery




      python-3.x astronomy astropy astroquery






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 20 '18 at 10:21









      JM5042JM5042

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