Keywords: astro

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## Constellations drawing

Figure: Plotting northern sky constellations.

The `CONSTELLATION` command plots the main constellations stars in the `FRAME` area, using the current pen and marker. The marker size will scale acrording to the star magnitude. Options are available to draw lines between stars (to form classical constellation outlines) or plot the star names. See the corresponding section of language internal help for details.

Example - Figure shows the plot resulting from the commands:

      FRAME EQ 12:32:54 75:30:33 180.0  ! an equatorial frame
      GREG\SET MARKER 5 2 1
      CONSTELLATION /DRAW M L           ! draws the stars and the lines