Skycorr: Sky emission subtraction for observations without p

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Ada Coda
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Skycorr: Sky emission subtraction for observations without plain sky information

Post by Ada Coda » Wed Aug 20, 2014 1:46 am

Skycorr: Sky emission subtraction for observations without plain sky information

Abstract: Skycorr is an instrument-independent sky subtraction code that uses physically motivated line group scaling in the reference sky spectrum by a fitting approach for an improved sky line removal in the object spectrum. Possible wavelength shifts between both spectra are corrected by fitting Chebyshev polynomials and advanced rebinning without resolution decrease. For the correction, the optimized sky line spectrum and the automatically separated sky continuum (without scaling) is subtracted from the input object spectrum. Tests show that Skycorr performs well (per cent level residuals) for data in different wavelength regimes and of different resolution, even in the cases of relatively long time lags between the object and the reference sky spectrum. Lower quality results are mainly restricted to wavelengths not dominated by airglow lines or pseudo continua by unresolved strong emission bands.

Credit: Noll, S.; Kausch, W.; Kimeswenger, S.; Barden, M.; Jones, A. M.; Modigliani, A.; Szyszka, C.; Taylor, J.

Site: http://www.eso.org/sci/software/pipelin ... ls/skycorr
http://adsabs.harvard.edu/abs/2014A%26A...567A..25N

Bibcode: 2014ascl.soft08007N

Preferred citation method: http://adsabs.harvard.edu/abs/2014A%26A...567A..25N

ID: ascl:1408.007
Last edited by Ada Coda on Mon Dec 31, 2018 5:16 pm, edited 1 time in total.
Reason: Updated code entry.

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