ISOCAM Interactive Analysis User's Manual Version 5.0 - ISO - ESA

148 CHAPTER 14. IMAGE ANALYSIS AND DISPLAY
CIA> isocont, lw6_raster, ’haro3.fits’, /radec, /scan
• The final example overlays image from two CAM configurations, both raster images of
the same object. radec is set to orient them in the standard astronomical fashion. The
keyword shift will make isocont attempt to match the images not only by astrometry but
by correlation also. This helps to compensate for possible pointing inaccuracies.
CIA> isocont, lw6_raster, lw3_raster, /radec, /shift
14.6.3 x isocont
x isocont is a widget interface to isocont (see Section 14.6.2). It has been designed for easy
experimentation of overlays – rather then specify keywords you can point and click. With
x isocont you can easily set contour levels, titles, produce hardcopies etc. . .
x isocont is started in the same way as isocont, but without the keywords, e.g.:
CIA> isocont, lw6_raster, ’haro3.fits’
Looking at Figure 14.17 you can see that it is split into several panels and drop-down menus.
Click on info/helpfor an online help description of the functions of the drop-down menus.
The functions of the panels are described below, with the corresponding isocont keyword
given for each.
Input Images Displays names of files or data structures. The data structure name is taken
from the field .SAD NAME. Check buttons can be set to switch on/off display of images.
The button FOV is equivalent to the keyword scan.
Astrometry Parameters Menus for setting astrometry parameters.
equivalent to keywords epoch, ref, magnify.
These parameters are
Contour Levels Set number of contour levels, minimum and maximum values, provide your
own custom levels etc. Contour colours can also be set. These parameters are equivalent
to keywords nlevels, min value, max value, levels, black, c style, c color.
Optional Overlays Allows some extra features to be added to the plot. These parameters are
equivalent to keywords grid, nonorth, putinfo, title, star.
Register Parameters Set shift configuration. isocont can perform manual shifting of the
images, i.e. you provide the number of pixels to shift by in x and y directions, or automatic
shifting by image correlation. These parameters are equivalent to keywords shift, offset.
Display Parameters Set parameters equivalent to keywords nosample, rect, missing.
Window Parameters
Font Parameters