# profitFlux2Mag: Convert between fluxes and magnitudes. In ProFit: Fit Projected 2D Profiles to Galaxy Images

## Description

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

## Usage

 ```1 2 3 4``` ```profitFlux2Mag(flux = 1, magzero = 0) profitMag2Flux(mag = 0, magzero = 0) profitFlux2SB(flux = 1, magzero = 0, pixscale = 1) profitSB2Flux(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

 `profitFlux2Mag` Returns the magnitude, where mag = -2.5 * log10(flux) + magzero) `profitMag2Flux` Returns the flux, where flux = 10^(-0.4 * (mag - magzero))

HERE!!!

Aaron Robotham

## Examples

 ```1 2``` ```profitFlux2Mag(1e5, 30) profitMag2Flux(17.5, 30) ```

ProFit documentation built on Nov. 11, 2019, 5:07 p.m.