# \#meas\_base

**URL:** https://www.rubin.community/tag/meas-base/170.md

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## [How do I do forced-photometry on a set of RA, Dec](https://www.rubin.community/t/how-do-i-do-forced-photometry-on-a-set-of-ra-dec/1074)

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**Author:** [@mwv](https://www.rubin.community/u/mwv)\
**Replies:** 13\
**Last updated:** [March 3, 2017, 6:02pm UTC](https://www.rubin.community/t/how-do-i-do-forced-photometry-on-a-set-of-ra-dec/1074 "2017-03-03T18:02:40Z")

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If I have a set of RA, Dec (e.g., a 2-column text file with RA, Dec in decimal degrees), what are good ways to perform forced-photometry at those RA, Dec positions on an image that has been astrometrically and photometri…