Research-grade Saturn image March 18, 2007Posted by dorigo in astronomy, internet, science.
Marco Vedovato, a (not-just-) amateur astronomer with an interest in planet imaging, distributed yesterday a great image of Saturn in a mailing list I subscribe to.
Marco, who is a regular contributor to ALPO , usually works with lesser instruments than the one he used for the picture shown below, a 80 cm (31.5″) Cassegrain telescope from the Max Valier Observatory. Even given the large diameter, the quality of the image is really good:
Please note – among several other interesting tiny details – the Encke division, a feature I recently claimed to have glimpsed with my scope, which has a diameter half the one used for the image above. The Encke division is the first dark band one finds from the edge of the rings, a fifth of the way to the much wider Cassini division. Encke has a width of only a few tenths of an arcsecond, so it is really, really at the limit of the power of a 16″ scope, despite being much longer and a feature of quite high contrast.