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mMakeHdr - Online in the Cloud

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This is the command mMakeHdr that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


mMakeHdr - Create a FITS header template for use in mosaic creation

SYNOPSIS


MakeHdr [-d level] [-s statusfile] [-p(ixel-scale) cdelt] [-n] images.tbl template.hdr
[system [equinox]]

DESCRIPTION


From a list of images to be mosaicked together, mMakeHdr generates the FITS header that
best describes the output image. If the input metadata represent a properly matched set
of data cubes (three or four dimensions), the header will reflect this and can be used in
cube mosaicking. If the spatial coverage of the data is large enough that a TAN
projection header is infeasable, an allsky (AITOFF) header will be created, though this
should be used with caution as it can easily be the result of metadata for images that
shouldn't really be combined.

OPTIONS


-d level
Turns on debugging to the specified level (1-3).

-s statusfile
Output and errors are written to statusfile instead of to stdout.

-p cdelt
Specify a pixel scale for the header, if different from the input images

-n "North-aligned" flag. By default, the FITS header generated represents the best
fit to the images, often resulting in a slight rotation. If you want north to be
straight up in your final mosaic, you should use this flag.

ARGUMENTS


images.tbl
Metadata table (generated by mImgtbl) describing the images to be mosaicked.

template.hdr
Path to header template to be generated.

system (optional)
Specifies the system for the header (default is Equatorial). Possible values are:

EQUJ
EQUB
ECLJ
ECLB
GAL
SGAL

equinox (optional)
If a coordinate system is specified, the equinox can also be given in the form
YYYY. Default is J2000.

RESULT


Creation of output file template.hdr.

MESSAGES


OK [struct stat = "OK", count=nimages, ncube=ncubes, clon=ra, clat=dec,
lonsize=crpix1, latsize=crpix2, posang=ang, lon1=ra1, lat1=dec1, lon2=ra2,
lat2=dec2, lon3=ra3, lat3=dec3, lon4=ra4, lat4=dec4]

OK messages about projection and number of axes>

ERROR Memory allocation failure.

ERROR Invalid pixel scale string: cdelt

ERROR Cannot open status file: statusfile

ERROR Invalid system string. Must be EQUJ|EQUB|ECLJ|ECLB|GAL|SGAL

ERROR Equinox string is not a number

ERROR Can't open output header file.

ERROR Invalid image metadata file: filename

ERROR Need columns: ctype1 ctype2 nl ns crval1 crval2 crpix1 crpix2 cdelt1 cdelt2 crota2
(equinox optional). Four corners (equatorial) will be used if they exist or even
just a single set of coordinates

ERROR Bad WCS for image n

ERROR Error computing boundaries.

ERROR Output wcsinit() failed.

EXAMPLES


$ mMakeHdr 2mass-images.tbl orig.hdr
[struct stat="OK", count=30]

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