fried_parameter_to_seeing

hcipy.atmosphere.fried_parameter_to_seeing(r0, wavelength=5e-07)

Calculate the FWHM of the seeing from the Fried parameter.

This uses \(\theta = 0.98 \lambda / r_0\), where \(\theta\) is the FWHM of the seeing, \(\lambda\) is the wavelength and \(r_0\) is the Fried parameter.

Parameters:
r0scalar

The Fried parameter in meters.

wavelengthscalar

The wavelength in meters at which the Fried parameter is measured (default: 500nm).

Returns:
scalar

The FWHM of the seeing in arcsec at the specified wavelength.