Last month, comet C/2001 Q4 (NEAT) joined another comet, C/2002 T7 (LINEAR), so that, for observers in the southern hemisphere, two naked eye comets were visible simultaneously. While C/2002 T7 was not favorably placed for observers in the northern hemisphere, comet NEAT was visible in the evening sky trough most of May as seen from northern latitudes.
The image of comet C/2001 Q4 (NEAT) shown here was taken by Rafael Ferrando at the Observatorio Astronomico Pla D'Arguines in Spain, using a SBIG ST-9 CCD camera on a 0.35m Schmidt-Cassegrain telescope operating at a focal ratio of f/4. Five exposures of one minute each were assembled to create this mosaic image, which shows impressive details in the comet's ion tail. More images of this comet, taken by Ferrando and other Spanish observers, can be seen on this web page.