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centerRadon: Center determination code in stellar images

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Ada Coda
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centerRadon: Center determination code in stellar images

Postby Ada Coda » Mon Jul 01, 2019 3:31 am

centerRadon: Center determination code in stellar images

Abstract: centerRadon finds the center of stars based on Radon Transform to sub-pixel precision. For a coronagraphic image of a star, it starts from a given location, then for each sub-pixel position, it interpolates the image and sums the pixels along different angles, creating a cost function. The center of the star is expected to correspond with where the cost function maximizes. The default values are set for the STIS coronagraphic images of the Hubble Space Telescope by summing over the diagonals (i.e., 45° and 135°), but it can be generally applied to other high-contrast imaging instruments with or without Adaptive Optics systems such as HST-NICMOS, P1640, or GPI.

Credit: Ren, Bin; Wang, Jason J.; Pueyo, Laurent

Site: https://github.com/seawander/centerRadon
https://ui.adsabs.harvard.edu/abs/2018ApJ...852..104R

Bibcode: 2019ascl.soft06021R

ID: ascl:1906.021
Last edited by Ada Coda on Mon Jul 01, 2019 3:32 am, edited 1 time in total.
Reason: Updated code entry.

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