mangadap.util.constants module

Defines a catch-all class for useful constants. These are meant to be values that are not available elsewhere, such as astropy.constants.

License

Copyright © 2019, SDSS-IV/MaNGA Pipeline Group

class mangadap.util.constants.DAPConstants[source]

Bases: object

Defines the following set of constants:

Attribute

Value

sig2fwhm

\(\sqrt{8\ln(2)}\)

rad2arcs

\(3600\frac{180}{\pi}\)

sidereal_year

\(31558175.779\)
rad2arcs = 206264.80624709636

Conversion factor from radians to to arcseconds.

sidereal_year = 31558175.779

Length of a sidereal year (1.0000385 Gregorian years) in seconds.

sig2fwhm = 2.3548200450309493

Conversion factor from the standard deviation, \(\sigma\), of a Gaussian to its full-width at half maximum (FWHM).