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Lunt 50mm tunable H-alpha filter with 18mm blocking filter for scopes under 1800mm focal length
$2,376.00This 50mm clear aperture Lunt H-alpha filter can be used to provide striking views of solar prominences and disk detail with virtually any telescope having a focal length under 1800mm . . . -
Astro-Tech 1.25" #ND9 13% Transmission neutral density grey Moon filter
$12.95This Astro-Tech 1.25" 13% transmission neutral gray filter reduces the brightness and glare that can mask low contrast details during lunar and planetary observing . . . -
Astro-Tech #12 Medium yellow 1.25" color filter
$11.95This #12 medium yellow Astro-Tech 1.25" eyepiece filter is helpful in improving lunar and Martian contrast in telescopes 4" to 8" in aperture, particularly if combined with a polarizing or neutral density filter when used with the larger apertures . . . -
Astro-Tech #21 Orange 1.25" color filter
$11.95This #21 orange Astro-Tech 1.25" eyepiece filter is useful in improving contrast when observing the Moon and all planets out to Saturn in telescopes 6" to 8" in aperture and larger, particularly if combined with a polarizing or neutral density filter . . . -
Astro-Tech #23A Light red 1.25" color filter
$11.95This #23A light red Astro-Tech 1.25" eyepiece filter is useful when observing Mercury and Venus during the day and at twilight and when observing Mars, Jupiter, and Saturn with telescopes 4" in aperture and larger . . . -
Astro-Tech #29 Dark red 1.25" color filter
$11.95If you have a big scope (10" in aperture and larger), this #29 dark red Astro-Tech 1.25" eyepiece filter can be useful when observing Mercury and Venus during the day and at twilight and when observing Mars, Jupiter, and Saturn . . . -
Astro-Tech #47 Violet 1.25" color filter
$11.95If you have a big scope (8" in aperture and larger), this Astro-Tech #47 violet 1.25" eyepiece filter can help detect high clouds and haze over the Martian polar caps and enhance structure in Saturn's rings . . . -
Astro-Tech #56 Light green 1.25" color filter
$11.95If you have a scope 6" in aperture and under, this Astro-Tech #56 light green 1.25" eyepiece filter is a useful tool for observing different features on every planet from Venus to Saturn . . . -
Thousand Oaks SolarLite 11" Solar Filter For Celestron 11" SCT S-12500
$129.00After years of R & D Thousand Oaks has developed a new solar film that has the optical quality of the glass
