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[ascl:1906.021] centerRadon: Center determination code in stellar images

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.

Code site:
https://github.com/seawander/centerRadon
Used in:
https://ui.adsabs.harvard.edu/abs/2018ApJ...852..104R
Described in:
https://ui.adsabs.harvard.edu/abs/2017SPIE10400E..21R
Bibcode:
2019ascl.soft06021R
Keywords: NASA, HST

Views: 5488

ascl:1906.021
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