Principle of the Program

1.

Creates a 1D image containing the continuum and possible emission lines.

2.

Induces absorption features on this image.

3.

Possibly, comparison of the resulting image with observations. According to the result, the user can then modify some of the input parameters and repeat the operation until the agreement is found to be satisfactory.

The package contains:

4 commands: 		 CREATE/PSF 		 : 		 creation of the instrumental response
		 COMPUTE/EMI 		 : 		 computation of the initial unabsorbed                                                    spectrum
		 COMPUTE/ABS 		 : 		 main program, computation of the theoretical
		 		 		        absorption spectrum.
		 TUTORIAL/CLOUD 		 : 		 on line tutorial

3 tables: 		 EMI 		 : 		 contains the emission line parameters
		 ABSP 		 : 		 contains the atomic data
		 ABSC 		 : 		 contains the absorption line parameters
		 		 		                (cloud model) 
4 keywords 		 CLDDIM 		 :) 		
		 CLDZ 		 :) 		 monitor several parameters or options
		 CLDCT 		 :) 		 common to the 3 commands
		 CLDOP 		 :)