Convert vacuum wavelengths to air wavelengths

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Description

Convert vacuum wavelengths to air wavelengths

Usage

1
vactoair(wave_vac)

Arguments

wave_vac

vacuum wavelength, in Angstroms, scalar or vector

Details

Corrects for the index of refraction of air under standard conditions. Wavelength values below 2000 A will not be altered. Method from Ciddor (1996). Accurate to about 10 m/s.

Value

wave_air

air wavelength, in Angstroms, scalar -r vector

Author(s)

Written by D. Lindler 1982

R adaptation by Arnab Chakraborty June 2013

References

Ciddor, P. E. 1996, Refractive index of air: New equations for the visible and near infrared, Applied Optics, 35, 1566. http://adsabs.harvard.edu/abs/1996ApOpt..35.1566C

See Also

airtovac

Examples

1
vactoair(2000.000)   # yields air wavelength 1999.353 Angstroms

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