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Поисковые слова: manicouagan crater
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Next: *tvimcontour* - Overlay contours
Up: Celestial Coordinates from Image
Previous: *wcscoord* all
To produce a high-quality black-and-white figure of a source with a
coordinate grid overlaid, use the following recipe:
- 1.
- Open an SAOimage window, display an image, click on the
color/invert button, and adjust the colors to get a black-and-white
image.
- 2.
- Set the following display parameters:
display.xcenter=0.55
display.ycenter=0.51
- 3.
- Display a 430
430 pixel section of the image (blocked or
unblocked). (This allows room in the SAOimage display for
coordinate labels outside of the figure. Labels can also be inside,
in which case step 2 is unnecessary and the full 512
512 pixels
can be displayed.)
display ``rp110590n00.qp[bl=15][249:679,409:839]'' 1
- 4.
- Run wlpars, which will invoke eparam on one of the
wcslab parameter files, and change ``major_g'' to no and
``title'' to blank (hit space then return). (The title option here
may be used, but it requires that a smaller region be displayed. A
different labeling option is used in step 7.) Packages ``images'' and
``tv'' must be loaded to run wlpars and wcslab.
- 5.
- Set the wcslab parameter ``device'' to imdB (for a black
overlay). (Other colors are available, see below.)
wcslab.device=``imdB''
- 6.
- Run wcslab (overlays a world coordiante system).
wcslab ``rp110590n00.qp[bl=15][249:670,409:839]'' 1
- 7.
- Make a hardcopy (from outside IRAF) using facilities available on
your machine, e.g., screendump.
AT SAO: xprint -saoskip -nobdrs -portrait -P lp -label ``Fig. 986A'' -font 24
Next: *tvimcontour* - Overlay contours
Up: Celestial Coordinates from Image
Previous: *wcscoord* all
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1998-06-10