title test aperture beam command with intensity c c commands for density & abundances ========= hden 0 init file "honly.ini" c c other commands for details ========= constant temper 4 c c commands controlling continuum ========= laser 2 ionization -2 c c commands controlling geometry ========= stop thickness 10 sphere aperture beam c c commands controlling output ========= save overview "aperture_beam_int.ovr" save performance "aperture_beam_int.per" save monitors "aperture_beam_int.asr" c c commands giving the monitors ========= monitor line intensity "unit" 1 0 monitor thickness 10 error 0.001 c aperture_beam_int.in c class geometry c ======================================== This is a homogeneous sphere that is especially simple. The model is a test of the aperture command, a command that simulates observing part of an extended object. In this case the aperture is a beam contered on the center of the nebula, with a line of sight extending through the object. The code carries along a dummy emission line ("Unit 1") with a constant intensity of 1e-10 erg cm-3 s-1. The line goes through all of the code's infrastructure, and when the calculation is complete, the program confirms that the "luminosity" of the line is the emitting volume times 1e-10. The aperture command is verified by asserting that the emission line has the correct "luminosity". In this case the inner radius is not specified so the returned value is unity.