Cleaning large-scale features from HMI Dopplergrams

This package lets you remove the following features from the Dopplergram images of the Helioseismic Magnetic Imager (HMI).

1. Effect of satellite velocity
2. Gravitational redshift
3. Large-scale features (differential rotation, meridional circulation, limb-shift)

Attribution

This code was developed for the work Kashyap & Hanasoge (2021). Please cite it if you find the code useful in your work. The BiBTex entry for this paper is:

@ARTICLE{Kashyap-Hanasoge-2021-ApJ,
       author = {{Kashyap}, Samarth G. and {Hanasoge}, Shravan M.},
        title = "{Characterizing Solar Surface Convection Using Doppler Measurements}",
      journal = {\apj},
     keywords = {Solar photosphere, Supergranulation, 1518, 1662, Astrophysics - Solar and Stellar Astrophysics},
         year = 2021,
        month = aug,
       volume = {916},
       number = {2},
          eid = {87},
        pages = {87},
          doi = {10.3847/1538-4357/ac05bc},
archivePrefix = {arXiv},
       eprint = {2105.12055},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2021ApJ...916...87K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}