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L.A.Cosmic: Laplacian Cosmic Ray Identification

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owlice
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L.A.Cosmic: Laplacian Cosmic Ray Identification

Postby owlice » Sat Jul 28, 2012 5:37 pm

L.A.Cosmic: Laplacian Cosmic Ray Identification

Abstract: Conventional algorithms for rejecting cosmic rays in single CCD exposures rely on the contrast between cosmic rays and their surroundings and may produce erroneous results if the point-spread function is smaller than the largest cosmic rays. This code uses a robust algorithm for cosmic-ray rejection, based on a variation of Laplacian edge detection. The algorithm identifies cosmic rays of arbitrary shapes and sizes by the sharpness of their edges and reliably discriminates between poorly sampled point sources and cosmic rays. Examples of its performance are given for spectroscopic and imaging data, including Hubble Space Telescope Wide Field Planetary Camera 2 images, in the code paper.

Credit: van Dokkum, Pieter G.; Bloom, J.; Tewes, Malte

Site: http://obswww.unige.ch/~tewes/cosmics_dot_py/
http://adsabs.harvard.edu/abs/2001PASP..113.1420V

Bibcode: 2012ascl.soft07005V

Preferred citation method: http://adsabs.harvard.edu/abs/2001PASP..113.1420V

ID: ascl:1207.005
Last edited by Ada Coda on Fri Sep 07, 2018 4:40 pm, edited 1 time in total.
Reason: Updated code entry.
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augustmuench
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Re: L.A.Cosmic: Laplacian Cosmic Ray Identification

Postby augustmuench » Fri Sep 07, 2018 3:06 pm

There is another code site for this code (in C++) in addition to the python version provided already in ASCL.

https://github.com/cmccully/lacosmicx

And this github entry and van Dokkum's download page (top of http://www.astro.yale.edu/dokkum/lacosmic/download.html) suggest the preferred citation is "2001PASP..113.1420V"
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August (Gus) Muench
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owlice
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Re: L.A.Cosmic: Laplacian Cosmic Ray Identification

Postby owlice » Fri Sep 07, 2018 4:47 pm

Hi Gus,

Thank you for pointing these out! I've added the preferred citation and will add an entry for the C++ version this month. I've also disambiguated the paper reference, so that should soon appear on ADS as "Described in" rather than "Paper 1."

Owl
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