The observations were made using the Indiana University coronagraphic adaptor and re-imaging module on the 3.5m WIYN telescope at Kitt Peak National Observatory near Tucson, Arizona. The WIYN Observatory is a joint facility of the University of Wisconsin, Indiana University, Yale University, and the National Optical Astronomy Observatories. A central mask about 25 arcseconds wide is used to reduce the scattered light from the disk of Saturn.
North is to the top, and East is to the left.
The C Ring and Cassini's Division are bright while the A and B Rings are dark. This image confirms the suggestion from HST observations that Prometheus is about 30 minutes behind the position predicted on the basis of the pre-1995 ephemeris. Each exposure was 120 seconds long. Appreciable motion of the moons is evident in the eleven mintues between the exposures. A cartoon labelling the objects in each image can be viewed by clicking on the image.