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fitsgrid - convert fits binary table to regular fits image by gridding
fitsgrid [parameter=value] ...
fitsgrid grids a FITS binary
table into a FITS image. Currently the program can only handle a DIRBE bintable,
from the COBE database (released: august 1993). Future versions will be
more flexible in selecting which columns to use for gridding, and which
for emission, much like snapgrid(1NEMO)
. A new package fitstrans, modeled
after bodytrans. must be written for this. Work is in progress.
The
following parameters are recognized in any order if the keyword is also
given:
- in=bintable
- Input fits table file. The fits(3NEMO)
package is used
to read the binary table. No default.
- out=image
- Output fits image. The fitsio(3NEMO)
package is used to write the image. No default.
- long=lmin,lmax
- Range in
(galactic) longitudes. Note that lmin is normally larger than lmax. Although
longitudes are in the range 0..360, when the sign of lmin and lmax are different
(i.e. the galactic center is in the middle), angles are reduced to -180..180.
Note that lmin,lmax are the edges of the grid, and that the pixels coordinates
are defined in the center of a pixel. Your FITS header for CRPIX1 may hence
look odd. [Default: 180,-180].
- lat=lmin,lmax
- Range in (galactic) latitudes
. [Default: -15,15].
- nlong=
- Number of pixels in longitude [Default:
360].
- nlat=
- Number of pixels in latitude [Default: 30].
- band=
- DIRBE Band
to process. Valid bands are numbered 1 through 10. [Default: 1].
Peter
Teuben
scanfits(1NEMO)
, fitshead(1NEMO)
, fits(3NEMO)
, fitsio(3NEMO)
,
fits(5NEMO)
13-Aug-93 V1.0 Created PJT
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