# Question about getting the pixels and their values of a HeavyFootprint

**URL:** <https://www.rubin.community/t/question-about-getting-the-pixels-and-their-values-of-a-heavyfootprint/4468>\
**Category:** Support\
**Created:** [October 14, 2020, 1:14am UTC](https://www.rubin.community/t/question-about-getting-the-pixels-and-their-values-of-a-heavyfootprint/4468 "2020-10-14T01:14:45Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![sfu](https://sea2.discourse-cdn.com/flex002/user_avatar/www.rubin.community/sfu/32/3060_2.png) [@sfu](https://www.rubin.community/u/sfu)\
**Post date:** [October 14, 2020, 1:14am UTC](https://www.rubin.community/t/question-about-getting-the-pixels-and-their-values-of-a-heavyfootprint/4468/1 "2020-10-14T01:14:45Z")

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Hi all, is it possible to get the pixel values (or just pixels) of a HeavyFootprint (i.e. a deblended “segmentation” map) by its coordinate (e.g. RA, DEC) on a coadded image?  
When we are looking at some large but low-surface-brightness galaxies, we notice that the galaxies could be deblended into (or just detected as) multiple objects. We hope to combine the info from all nearby HeavyFootprints to analyze the whole galaxy image.  
Thank you.

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**Author:** ![price](https://sea2.discourse-cdn.com/flex002/user_avatar/www.rubin.community/price/32/488_2.png) [@price](https://www.rubin.community/u/price)\
**Post date:** [October 15, 2020, 3:59pm UTC](https://www.rubin.community/t/question-about-getting-the-pixels-and-their-values-of-a-heavyfootprint/4468/2 "2020-10-15T15:59:07Z")

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The result of deblending is recorded only in the `HeavyFootprint`s in the catalog. You cannot get deblended `HeavyFootprint`s from an image without running the deblender.

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<div class="post-metadata">

**Author:** ![sfu](https://sea2.discourse-cdn.com/flex002/user_avatar/www.rubin.community/sfu/32/3060_2.png) [@sfu](https://www.rubin.community/u/sfu)\
**Post date:** [October 16, 2020, 12:34am UTC](https://www.rubin.community/t/question-about-getting-the-pixels-and-their-values-of-a-heavyfootprint/4468/3 "2020-10-16T00:34:33Z")

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Thank you. Can I ask which catalog (or image) stores the `HeavyFootprint`s?

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**Author:** ![price](https://sea2.discourse-cdn.com/flex002/user_avatar/www.rubin.community/price/32/488_2.png) [@price](https://www.rubin.community/u/price)\
**Post date:** [October 16, 2020, 1:45am UTC](https://www.rubin.community/t/question-about-getting-the-pixels-and-their-values-of-a-heavyfootprint/4468/4 "2020-10-16T01:45:22Z")

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The dataset names are `src` for single detectors, or `deepCoadd_meas` for coadds.