Filters
Fits standard 1.25" eyepieces
#80A Blue:
Most popular for the study of detail on Jupiter and Saturn
Enhances the contrast on Jupiter's cloud belts
Enhances details of the Great Red Spot
Brings out detail in Saturn's belts and polar features
Also very useful for lunar observing
#58 Green:
Rejects red and blue wavelengths
Increases the contrast on the lighter parts of the surface of Jupiter
Useful for enhancing the cloud belts and polar regions on Saturn
Increases the contrast in Mars polar ice caps
Increases the contrast of atmospheric features on Venus
#56 Light Green:
Excellent for the observation of Martian polar ice caps and for the yellow tinted dust storms on the planet's surface
Increases the contrast of the red and blue regions in Jupiter's atmosphere and cloud belts
Great for lunar observing
#25 Red:
Blocks the transmission of blue and green wavelengths
Sharply defines the contrast between the cloud formations and the lighter-toned surface features on
Jupiter
Useful for definition of the Martian polar ice caps and maria
#21 Orange:
Reduces transmission of blue and green wavelengths
Increases the contrast between these blue/green areas and red/yellow/orange areas
Sharpens the boundaries between these areas on the Martian surface
Sharpen the contrast in Jupiter's belts and to bring out the Great Red Spot
Slightly increases surface details on Saturn
#12 Deep Yellow:
Enhances red and orange features on Jupiter and Saturn, while blocking blue and green wavelengths
Lightens the red and orange features on Mars, while reducing, or blocking, the transmission of blue and green areas - increasing the contrast between the two
Enhances the blue clouds in the Martian atmosphere
Moon:
Makes viewing the Moon safe when at or near full phase
Reduces glare to bring out more surface detail and improve contrast
Also useful to bring out surface details on Venus
Barlow Lens
