Documentation on odnh3

Task: odnh3
Purpose: Ammonia analysis program
Categories: map combination, map manipulation

 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.

Key: map1
 Main hyperfine component map of the J,K=(1,1) level.  No default.

Key: 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.

Key: mapt
 For op=temp, mapt is the J,K=(1,1) main hyperfine component 
 optical depth map. 
 No default.

Key: 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.

Key: region
	Standard region keyword. Use `help region' for more information.

Key: op
 Which Odnh3 option is being used.  See map2 for details.  
 No default.

Key: out
 The name of the output image.  No default.