Astrophysics Source Code Library

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ASCL Code Record

[ascl:1512.001] IRACpm: Distortion correction for IRAC astrometric data

The IRACpm R package applies a 7-8 order distortion correction to IRAC astrometric data from the Spitzer Space Telescope and includes a function for measuring apparent proper motions between different Epochs. These corrections are applicable only to positions measured by APEX; cryogenic images benefit from a correction for varying intra-pixel sensitivity prior to the application of the distortion.

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