vactoair {astrolibR} | R Documentation |
Convert vacuum wavelengths to air wavelengths
vactoair(wave_vac)
wave_vac |
vacuum wavelength, in Angstroms, scalar or vector |
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.
wave_air |
air wavelength, in Angstroms, scalar -r vector |
Written by D. Lindler 1982
R adaptation by Arnab Chakraborty June 2013
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
vactoair(2000.000) # yields air wavelength 1999.353 Angstroms