Munipack ‒ Manual Page

# Colour Frame Composition

Merges a set of single filter exposures to a colour image.

## Command

`munipack coloring [-o file] [-c colorspace] file1[,ext1] ...`

## Description

Munipack implements a method which transforms images taken via a set of standard photometric filters (Johnson BVR or equivalent) to CIE XYZ colour space (the space simulates the colour sensitivity of the human eye). Results has colours near of natural colours and simulates how the object would be seen by an extraordinary observer.

Main purpose of the utility is offer possibility to create images in natural colours from instrument not equipped by CIE XYZ filters (eg. any professional telescope).

Inputs are specified as twines: {file,ext}, where `file` is a name of a FITS file, `ext` is the FITS extension. The extension is optional and defaulted to a first image HDU.

The frames must be listed on command line from short to longer wavelengths (following conventional BVR order). This is exactly oppposite to RGB (XYZ).

## Parameters

`-c colour-space`
  Colour-space of input images (eg. Johnson BVR)

See Common options for input/output filenames.

## Examples

Create a new color FITS image `m27.fits` from a set of files taken with filters `m27_[B,V,R].fits`:

    $ munipack coloring -o m27.fits -c 'Johnson BVR' m27_B.fits m27_V.fits m27_R.fits

Dumbbell nebula in colours

## See Also

Colour Processing, Common options