PLANETARY FILTERS 3 x planetary filters, these sell for $19 each at Bintel. Selling the three for $40 posted anywhere in Australia #82A Light Blue (73% transmission): Useful on the Moon, Mars, Jupiter, and Saturn, this subtle pale blue filter enhances areas of low contrast while avoiding significant reduction of overall image. brightness.
#56 Light Green (53% transmission): Excellent for the observation of Martian polar ice caps as well as yellow-tinted dust storms on the Martian surface. Increases contrast of red and blue regions in Jupiter’s atmosphere as well as in the cloud belts. Also useful for enhancing lunar detail.
#47 Violet (3% transmission): strongly rejects red, yellow, and green wavelengths; useful for the study of Martian polar cap regions, and for the observation of occasional phenomena in the upper atmosphere of Venus. Enhances contrast between the rings of Saturn. Use only on telescopes of 8" aperture and larger. P.M. me if you are interested.
