Menu for the package stsdas.analysis.dither avshift - Averages the shifts measured on the 4 WFPC chips. blot - Image sampling using interpolation (reverse "drizzling"). crossdriz - Builds a set of cross-correlation images (shift + rotation). drizzle - Perform linear image reconstruction using "drizzling". dunlearn - Resets all task parameters to default values. sky - Sky processing by "crrej-like" algorithm. imextreme - Locates the maximum and minimum pixels in an image. offsets - Builds cross-correlation image (shift only). precor - Cosmic-ray processing. rotfind - Finds rotation angle from a set of cross-correlation images. shiftfind - Finds X,Y shifts in a cross-corelation image. cdriz @ Pset for the 'offsets' task. dq @ Pset for the 'sky' task. For more information about the 'dither' package, type "help dither option=sysdoc".