Astronomy Filters at BuyTelescopes.com

Ningbo Optics Moon & Skyglow Filter 1.25"

Improves lunar and planetary observing. Helps filter out street lights and glow from the moon.

$9.99

Meade Series 4000 Photo-Visual Color Filter #47 Violet

7516 - #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.

$14.95

Meade Series 4000 Photo-Visual Color Filter #25A Red

7515 - #25A Red (14% transmission): strongly blocks the transmission of blue and blue-green wavelengths, resulting in very sharply defined contrast between blue tinted cloud formations on Jupiter and the lighter-toned features of the disk. 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 used on telescopes of 8" or larger.

$14.95

Meade Series 4000 Photo-Visual Color Filter #38A Dark Blue

7519 - #38A Dark Blue (17% transmission): Is a popular filter for the study of Jupiter's disk, owing to the filter's strong rejection of orange and red wavelengths. It increases contrast between the reddish belt structures and enhances detail of the Red Spot. Also useful for the study of isolated phenomena, such as dust storms, on Mars, as well as the belt structure of Saturn. Increases contrast of subtle cloud markings on Venus.

$14.95

Meade Series 4000 Photo-Visual Color Filter #21 Orange

7510 - #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 area and blue-green regions on Mars, resulting in a darkening of edge-detail in the Martian maria.

$14.95

Ningbo Optics Variable Polarizing Filter 1.25"

Tones down brightness and accentuate contrast of bright celestial objects such as the moon.

$15.99

Meade Series 4000 Moon Filter: ND96

07531 - Transmits light uniformly across the entire visual spectrum. Reduces glare and increases clarity of the moon in scopes 4" plus. Also useful for splitting double stars when one staris significantly brighter than the other.

$17.99

Optec (CCD Photo Accessories) 2" #21 Orange Filter (Mounted)

#21 Orange, mounted in 48mm threaded cell. Glass filters mounted in 48mm threaded cell for insertion into 2” eyepiece or MAXfield/WideField lens assembly.

$30.00

Optec (CCD Photo Accessories) 2" #23A Light Red Filter (Mounted)

#23A Light Red, mounted in 48mm threaded cell. Glass filters mounted in 48mm threaded cell for insertion into 2” eyepiece or MAXfield/WideField lens assembly.

$30.00

Optec (CCD Photo Accessories) 2" #47B Blue Filter (Mounted)

#47B Blue, mounted in 48mm threaded cell. Glass filters mounted in 48mm threaded cell for insertion into 2” eyepiece or MAXfield/WideField lens assembly.

$30.00

Optec (CCD Photo Accessories) 2" #29 Deep Red Filter (Mounted)

#29 Deep Red, mounted in 48mm threaded cell. Glass filters mounted in 48mm threaded cell for insertion into 2” eyepiece or MAXfield/WideField lens assembly.

$30.00

Optec (CCD Photo Accessories) 2" #58 Light Green Filter (Mounted)

#58 Light Green, mounted in 48mm threaded cell. Glass filters mounted in 48mm threaded cell for insertion into 2” eyepiece or MAXfield/WideField lens assembly.

$30.00

Optec (CCD Photo Accessories) 2" #80A Medium Blue Filter

#80A Medium Blue, mounted in 48mm threaded cell. Glass filters mounted in 48mm threaded cell for insertion into 2” eyepiece or MAXfield/WideField lens assembly.

$30.00

Optec (CCD Photo Accessories) 2" Violet Rejection Filter (Unmounted)

Violet rejection filter, 50mm diameter. 50mm filters designed for factory installation into our 5-position IFW filter wheel or MAXfilter 3-position slider.

$30.00

Optec (CCD Photo Accessories) 2" Clear Filter (Unmounted)

Clear window, 50mm diameter. 50mm filters designed for factory installation into our 5-position IFW filter wheel or MAXfilter 3-position slider.

$30.00

Optec (CCD Photo Accessories) 2" #8 Pale Yellow Filter (Unmounted)

#8 Pale Yellow, 50mm diameter. 50mm filters designed for factory installation into our 5-position IFW filter wheel or MAXfilter 3-position slider.

$30.00

Optec (CCD Photo Accessories) 2" #12 Yellow Filter (Unmounted)

#12 Yellow, 50mm diameter. 50mm filters designed for factory installation into our 5-position IFW filter wheel or MAXfilter 3-position slider.

$30.00

Optec (CCD Photo Accessories) 2" #21 Orange Filter (Unmounted)

#21 Orange, 50mm diameter. 50mm filters designed for factory installation into our 5-position IFW filter wheel or MAXfilter 3-position slider.

$30.00

Optec (CCD Photo Accessories) 2" #23A Light Red Filter (Unmounted)

#23A Light Red, 50mmm diameter. 50mm filters designed for factory installation into our 5-position IFW filter wheel or MAXfilter 3-position slider.

$30.00

Optec (CCD Photo Accessories) 2" #47B Blue Filter (Unmounted)

#47B Blue, 50mm diameter. 50mm filters designed for factory installation into our 5-position IFW filter wheel or MAXfilter 3-position slider.

$30.00