disp2vel

paintbox.disp2vel(wrange, velscale)

Returns a log-rebinned wavelength dispersion with constant velocity.

This code is an adaptation of pPXF’s log_rebin routine, simplified to deal with the wavelength dispersion only.

Parameters

wrange: list, np.array or astropy.Quantity

Input wavelength dispersion range with two elements.

velscale: float or astropy.Quantity

Desired output velocity scale. Units are assumed to be km/s unless specified as an astropy.Quantity.