Content-type: text/html Manpage of odnh3

odnh3

Section: User Commands (1)
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NAME

odnh3 - Ammonia analysis program  

PERSON RESPONSIBLE

pjt  

CATEGORIES

map combination, map manipulation  

DESCRIPTION

ODNH3 is a MIRIAD task which creates optical depth and rotational temperatures maps from ammonia maps. Ammonia J,K=(1,1) emission has five hyperfine components, one main hyperfine component, two inner hyperfine components, and two outer hyperfine components.

Odnh3 takes a main hyperfine component map and either an inner or outer hyperfine component map and combines the two maps to make a single main hyperfine component optical depth map.

Odnh3 can also combine a J,K=(1,1) main hyperfine component map, a J,K=(2,2) main hyperfine component map, and a J,K=(1,1) main hyperfine component optical depth map to create a rotational temperature map.

Any of the input maps can be masked to allow a signal-to-noise cutoff.  

PARAMETERS

map1
Main hyperfine component map of the J,K=(1,1) level. No default.
map2
For op=taui, map2 is the inner hyperfine component map of the J,K=(1,1) level. For op=tauo, map2 is the outer hyperfine component map of the J,K=(1,1) level. For op=temp, map2 is the main hyperfine component map of the J,K=(2,2) level. No default.
mapt
For op=temp, mapt is the J,K=(1,1) main hyperfine component optical depth map. No default.
mask
A mask expression using FORTRAN syntax. The optical depth or rotational temperature is only calculated at pixels where the mask is TRUE. Thus, this keyword can be used to enforce a signal-to-noise cutoff on the input maps. No default.
region
This selects a subregion of an image. Multiple subregions can be selected, which are "ored" together. The following subcommands are recognized (each of which can be abbreviated to uniqueness).

  images(z1,z2)
Select image planes z1 to z2 inclusive. z2 defaults to z1.

  quarter(z1,z2)
Select the inner quarter of the image planes z1 to z2 inclusive. If both z1 and z2 are missing, then all planes are selected. If only z2 is omitted, z2 defaults to z1.

  boxes(xmin,ymin,xmax,ymax)(z1,z2)
Select the pixels within a box with corners xmin,ymin,xmax,ymax. z1 and z2 are the same as in the "image" subcommand. If z1 and z2 are omitted, all planes are selected.

  polygon(x0,y0,x1,y1,x2,y2,...)(z1,z2)
Select the pixels within the polygon defined by the list of vertices. z1 and z2 are the same as in the "image" subcommand. If z1 and z2 are missing, all planes are selected. If only z2 is omitted, it defaults to z1.

  mask(file)
Select pixels according to the mask given in the file.

The units of the numbers given in the above commands are, in general, absolute pixels. But this can be changed (and rechanged) by using one of the following subcommands.

  abspixel
Coordinates are interpreted as absolute pixel values, the default.
  relpixel
Coordinates are relative to the reference pixel of the map.
  relcenter
Coordinates are relative to the central pixel of the map, (defined as (naxis1/2+1,naxis2/2+1)).
  arcsec
Coordinates are in arcseconds, relative to the reference pixel.
  kms
Coordinates in the third dimension are in km/s.
op
Which Odnh3 option is being used. See map2 for details. No default.
out
The name of the output image. No default.


 

Index

NAME
PERSON RESPONSIBLE
CATEGORIES
DESCRIPTION
PARAMETERS

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Time: 18:35:38 GMT, July 05, 2011