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ftbg's Introduction

FTbg

Background removal using Fourier Transform

This handy python script takes a FITS image, perform Fourier transform, and separate low- and high-spatial frequency components by a user-specified cut. Both components are then inverse FT back to image domain. It can be used to remove large-scale background/foreground emission in many astrophysical applications.

Input: original FITS image Outputs: background and structure images

If you find this script useful, please cite our paper: Large-scale filaments associated with Milky Way spiral arms.

Example

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