Next: Quadrant DC Offset Removal in NICMOS Images Using an Eye-pleasing Criterion . ... This paper describes a simple imaging model which allows the limits of dithered imaging to be readily appreciated and briefly reviews available software. ... Dithered imaging can improve this sampling. ... ACOADD was originally developed for combining images with different PSFs but can also be used, with shifted PSFs and sub-sampled output images, for combining dithered under-sampled images. ...