#12 Yellow (74% transmission): Contrasts strongly with blue.colored features on Jupiter and Saturn, while enhancing red and orange features. Lightens red-orange features on Mars, while reducing or blocking the transmission, and thereby increasing the contrast, of bLue-green areas- Useful in increasing the contrast of lunar features in telescopes 6” aperture and larger.
Buy the Bintel #12 Filter

#21 Orange (46% transmission): Reduces or blocks transmission of blue-green wavelengths. Use on Jupiter and Saturn to enhance detail in the belts and polar regions. Sharpens boundaries between yellow-orange areas and blue-green regions on Mars, resulting in a darkening of edge-detail in the maria.
Buy the Bintel #21 Filter

#25 Red (14% transmission): The #25A filter strongly blocks the transmission of blue and blue-green wavelengths, resulting in very sharply defined contrast between, for example, blue-tinted cloud formations on Jupiter and the lighter-toned features of the disc. Also useful for the delineation of the Martian polar ice caps and maria. Because of its relatively low total light transmission the #25A filter should be employed on telescopes of 8” aperture and larger.
Buy the Bintel #25 Filter

#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 the red and blue regions in Jupiter’s atmosphere as well as in the cloud belts. Also useful for enhancing lunar detail.
Buy the Bintel #56 Filter

#80A Blue (30% transmission): A popular filter for the study of Jupiter and Saturn. Enhances contrast of rilles and festoons in Jupiter’s cloud belts, as well as details of the Red Spot. Brings out detail in Saturn’s belts and polar phenomena. Very useful as a contrast-enhancing lunar filter.
Buy the Bintel #80A Filter

#ND 96 Moon Filter (0.9 density; 13% transmission): The neutral density filter transmits light uniformly across the entire visual spectrum. It serves as an excellent filter to reduce glare and irradiation when observing the Moon with any telescope 4” and larger. The ND96 filter may also be employed in the splitting of close double stars where one of the binary pair significantly exceeds the other in brightness.
Buy the Bintel ND96 Filter

Polarising Filter: This filter is one half of a polarising set. It really cuts down glare and is great on planets to help sharpen the image. Can be used on splitting close doubles/
Buy the Bintel Polarising Filter
 

Bintel Filter Set: Set of 4 of any of the Bintel filters of your choice in this secure plastic case.
Buy a Bintel Filter Set
 
 

Bintel Eclipse Shades: For viewing Solar Eclipses, large Sunspots and Transits. These are a very economical way to view the Sun safely. keep a set inthe glovebox of the car to have with you everywhere.
Bintel Eclipse Shades
 

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