Updated polygon definition with factor for cosine declination

rubin-dp0 / tutorial-notebooks

Tutorial Jupyter Notebooks for Data Preview 0, created and maintained by the Rubin Observatory Community Science Team.

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Updated polygon definition with factor for cosine declination #183

Closed christinawilliams closed 4 months ago

christinawilliams commented 4 months ago

Added explanation that polygon geometry definition for the cutout tool does not factor in the difference in angular distance in the RA direction that is smaller by a factor of cos(declination) than in the declination direction, and demonstration of the correction.

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