coadd

Section: User Manuals (1)
Updated: 22 JUL 2019
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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.

FILES

~/.crush2/startup/coadd/: Location of user-specific java(1) runtime configurations.

BUGS

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

AUTHOR

Attila Kovács <attila[AT]sigmyne.com>