vega_fluxd

class sbpy.calib.vega_fluxd

Bases: FluxdScienceState

Get/set the sbpy Vega flux density.

To set the current values:

>>> from sbpy.calib import vega_fluxd
>>> import astropy.units as u
>>> with vega_fluxd.set({'V': 3674 * u.Jy}):
...     pass

The units must be flux density per unit wavelength or per unit frequency.

To retrieve the current values:

>>> import astropy.units as u
>>> with vega_fluxd.set({'V': 3674 * u.Jy}):
...     S = vega_fluxd.get()
...     print(S['V'])
3674.0 Jy

Multiple values are allowed:

>>> import astropy.units as u
>>> vega_fluxd.set({
...     'PS1_g': 4026 * u.Jy,
...     'PS1_r': 3252 * u.Jy,
...     'PS1_i': 2656 * u.Jy
... })

When wavelength is required, specify bandpass(lambda eff) for effective wavelength and/or bandpass(lambda pivot) for pivot wavelength:

>>> import astropy.units as u
>>> vega_fluxd.set({
...     'V': 3674 * u.Jy,
...     'V(lambda eff)': 548 * u.nm,
...     'V(lambda pivot)': 551 * u.nm
... })

Methods Summary

get()	Get the current science state value.
set(value)	Set the current science state value.
validate(value)

Methods Documentation

classmethod get()

Get the current science state value.

classmethod set(value)

Set the current science state value.

classmethod validate(value)