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

296 CHAPTER 22. SECOND ORDER CORRECTIONS
CIA> reduce, pds, /jitter
CIA> tviso, pds.image[ *, *, 0 ]
project cube This routine attempts to correct jitter by applying du, dv as an astrometric
correction. In the example below, the entire PDS CUBE is projected onto a MOSAIC
image. In attempting to make a crude correction of the jitter a magnification factor of 3
is applied to IMAGEs before projection.
CIA> project_cube, pds, mosaic, /jitter, mag=3
CIA> tviso, mosaic
22.2 Field of view distortion
FOV distortion affects the 12 ′′ ,6 ′′ and to a lesser extent the 3 ′′ lens. For raster PDSs FOV
distortion correction is integrated with the project raster MOSAIC creation method – see Section
20.4. However, any CAM image can be corrected for FOV distortion with corr field. In
order for this routine to apply the appropriate distortion correction some CAM parameters must
be supplied along with the image: pfov, channel and filter wheel.
CIA> corr_field, image, fltrwhl=’lw10’, channel=’lw’, pfov=3.0
corr field re-projects the image in order to correct the distortion. As a result of this, the
output image maybe rebinned. To prevent rebinning set the keyword /norebin.