.TH COADD "1" "July 2015" "0.56" "astrometry.net"
.SH NAME
coadd \- Co-add images for astrometry.net
.SH SYNOPSIS
.B coadd
\fIimage\fR \fIext\fR \fIweight\fR \fIext\fR \fIwcs\fR \fIext\fR...
.IP
use "none" as weight filename for no weighting
.SH OPTIONS
.TP
\fB\-w\fR \fIfile\fR
Output WCS file (default: input file)
.TP
\fB\-e\fR \fIextension\fR
FITS extension to read WCS from (default: primary extension, 0)
.TP
\fB\-o\fR \fIfile\fR
Output image file
.TP
\fB\-O\fR \fIorder\fR
Lanczos order (default 3)
.TP
\fB\-p\fR \fIplane\fR
Image plane to read (default 0)
.TP
\fB\-N\fR
Use nearest\-neighbour resampling (default: Lanczos)
.TP
\fB\-s\fR \fIsigma\fR
Smooth before resampling
.TP
\fB\-D\fR
Divide each image by its weight image before starting
.TP
\fB\-v\fR
More verbose
.SH AUTHOR
The Astrometry.net team. Principal investigators are David W. Hogg (NYU) and
Dustin Lang (CMU).
.SH SEE ALSO
http://astrometry.net