The molecular graphics program O cannot output raster image files directly, but can output plot description files that can be rendered in other programs. The simplest way to render these is via the Molray interface.
The plot description files ("oplot files") are created using the O plot commands, along with any of the normal O drawing commands, and it is highly recommended that you put all these commands into a macro file whilst building your picture, as you will almost certainly want to make small changes later, and repeating by hand a long series of commands with a small change is doomed to failure. Unfortunately, most O users have now got used to using the new pull-down menus, so they don't know the equivalent command-line instructions that are needed for a macro, so this is why I include some examples here.
Example 1 (mix of cpk and stick figures) : ! ================================================ plot_setup MyMetaFile.plt 1 ; yes ! Declare name of output file read matrix101.mat ! read in a matrix file to give chosen orientation read radii.o ! read in normal atomic radius sk_setup cylin smooth ; ; ! Set rendering to smooth sk_setup sphere smooth ; sk_setup stick smooth ; ; plot_on ! Start writing to the plot file mol bnd6 ! use mol bnd6 pa_case atom_z 4 6 7 8 16 gold blue red green ! atom colours (gold prints well) centre_atom bnd6 499 O4 ! centre the image obj mp35 ! create an object zo 499 499 ! with one residue end ! end of object sk_stick mp35 ! Render object bonds sk_cpk mp35 ! Render object atoms read cpk_radii.o ! Read in bigger radii pa_case atom_z 4 6 7 8 16 green blue red green ! Set atom colours select_off bnd6 499 499 ! Exclude the residue we had earlier select_visible ! Make visible obj sphere ! Show a sphere sphere 20.0 ! Radius 20 A end ! end of sphere cpk sphere ; ; read radii.o ! Set back radii for next time plot_off ! end plotting !====================================== Example 2 (Showing two maps ) : !====================================== plot_setup two_maps.plt 1 ; yes ! Declare output file name read matrix10.mat ! Read matrix for viewpoint plot_on ! Start plotting map_fil ../cns/m6_sigmaa.dsn6 ! Open a map file map_obj map1 ! Start a map object map_par 12 12 12 1.5 blue 0.5 0.0 1 ! Set map parameters (contours at 1.5) map_cov CBI 1.0 ! Cover object CBI by 1 Å map_draw ! Draw the map map_fil ../cns/m6_sigmaa_copy.dsn6 ! Repeat for 2nd map map_obj map2 ! Start a map object map_par 12 12 12 2.4 red 0.5 0.0 1 ! Set map parameters (contours at 0.5) map_cov CBI 1.0 ! Cover object CBI by 1 Å map_draw ! Draw the map ske_stick CBI ! Make a stick rendering of the object plot_off ! Stop plotting !======================================