profoundFlux2Mag: Convert between fluxes and magnitudes.

In asgr/ProFound: Photometry Tools

Convert between fluxes and magnitudes.

Description

Simple functions to concert between magnitudes and flux given a certain magnitude zero-point.

Usage

profoundFlux2Mag(flux = 1, magzero = 0)
profoundMag2Flux(mag = 0, magzero = 0)
profoundFlux2SB(flux = 1, magzero = 0, pixscale = 1)
profoundSB2Flux(SB = 0, magzero = 0, pixscale = 1)

Arguments

flux	Numeric scalar/vector; flux in ADUs given the magzero.
mag	Numeric scalar/vector; magnitude given the magzero.
magzero	Numeric scalar/vector; magnitude zero point. What this implies depends on the magnitude system being used (e.g. AB or Vega).
SB	Numeric scalar/vector; surface brightness in mag/asec^2.
pixscale	Numeric scalar/vector; the pixel scale, where pixscale=asec/pix (e.g. 0.4 for SDSS). If set to 1, then the output is in terms of pixels, otherwise it is in arcseconds.

Details

These functions are here to prevent silly mistakes, but the conversion is almost trivial.

Value

profoundFlux2Mag	Returns the magnitude, where mag = -2.5 * log10(flux) + magzero)
profoundMag2Flux	Returns the flux, where flux = 10^(-0.4 * (mag - magzero))

HERE!!!

Author(s)

Aaron Robotham

See Also

profoundGainConvert

Examples

profoundFlux2Mag(1e5, 30)
profoundMag2Flux(17.5, 30)

asgr/ProFound documentation built on Feb. 10, 2024, 9:04 p.m.