coadd(1)

NAME
coadd - Tool for combining CRUSH maps and more.

SYNOPSIS
coadd [options] <filename>

DESCRIPTION
coadd is a tool for combining FITS images produced by crush(1) (and also by BoA). In general, it should always be preferred to reduce all data together using crush(1) in a coherent fashion, rather than combining images afterwards. However, some data sets may be too large to fit into the available RAM in a single reduction run, making external coadding necessary at times. In such cases, the recommended approach is to reduce manageable chunks of data with crush(1) using the -split option (indicating a split dataset), and combine the images with coadd. The resulting composite image may be further processed with imagetool(1) to apply the desired smoothing, filtering, clipping etc.

OPTIONS

-help
    Provides a basic help screen, similar to this one.

-out=
    Specify the full output file name. The default value is <source-name>.coadded.fits.

-name=
    Specify the output file name relative to input image path.

-projection=
    Specify the spherical projection to use.

-jackknife
    Randomly jackknife maps.

-scaling
    Fit scaling for each component.

-offsets
    Fit offset for each component.

-weighting
    Derive weighting for the components.

-noise=
    Estimate noise from data or image. The default is image.

BUGS
If you find them, please report them to the author (see below).

AUTHOR
Attila Kovacs <attila[AT]submm.caltech.edu>

SEE ALSO
crush(1), imagetool(1), show(1), difference(1)