!DSP_WAV

This is a new version of DSPWAV.

The "Mouse buttons" boxes tell you what you can do inside the
image display and profile plot windows (zooming in/out/moving
focus).

The images are formed by taking the intensities at a given offset
in a given line window. The offset is indicated by a star in the
profile plot.

The spectra are taken at the point indicated on the images by the
crosshair.

!Hints
  
You might want to try to adjust the intensity scaling. Press the
"Intensity scaling" button (top right), and switch on CDS_CLEAN_IMAGE, 
and switch off SIGRANGE. 

CDS_CLEAN_IMAGE is turned off initially because it has been known
to hang in an endless loop for some data sets -- if this happens,
simply interrupt the program with control-C and use

      IDL> @recover

to recover the QLDS you are looking at.

You should also try out some of the different line fitting
functions.  They're sometimes quite wrong, but so is the
assumption of noise-free, single, well-separated emission lines.


!More help
Just try any of the buttons to see what they do!

!Questions?
Questions or comments to: s.v.h.haugan@astro.uio.no
