Roman "database access dynamic" notebook#171
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Draft of Roman "database access dynamic" notebook, demonstrating how define spatial selections in user-specified coordinate frames and "dynamically" (with new spherical region support in astropy/regions, and an accompanying helper function) translate that to the database coordinate frame (ICRS) to query (Roman) catalog, and visualize the result. Includes an example with both astroquery and TAP, as currently the astroquery case is fairly slow. (This example can be streamlined when astroquery is backed by TAP/postgres, when both astroquery & TAP have support for polygon spatial regions, and when "lazy queries" are supported in astroquery that enable specification of relational constraints.) Developed following the user story https://github.com/eteq/roman-vision/blob/main/database-access-dynamic.md
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Implementation of a Roman "database access dynamic" notebook, demonstrating how define spatial selections in user-specified coordinate frames and "dynamically" (with new spherical region support in astropy/regions, and an accompanying helper function) translate that to the database coordinate frame (ICRS) to query (Roman) catalog, and visualize the result.
This notebook includes an example with both astroquery and TAP (as currently the astroquery case is fairly slow).
(Note: this example can be streamlined in the future, when astroquery is backed by TAP/postgres, when both astroquery & TAP have support for polygon spatial regions, and when "lazy queries" are supported in astroquery that enable specification of relational constraints.)
Developed following the user story https://github.com/eteq/roman-vision/blob/main/database-access-dynamic.md