Light blue filters (#80A) are useful for observing Mars to detect clouds, cloud bands, ice fog, and polar haze. Also darkens red areas. When observing Jupiter, #80A can be used to enhance bright cloud zones and sharpen boundares of faint ones.
1.25" Vernonscope Mounted Glass Filters feature 1" clear-aperture optical glass. Numbers are engraved on the mounting to correspond with those of Kodak Wratten series. The mountings are edge-knurled and threaded to fit the bases of BRANDON oculars and DAKIN Barlows. Vernonscope Mounted Glass Filters cut glare, provide superior contrast, improve definition and reduce eye fatigue.