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  1. 1.25" UHC Narrowband filter

    $89.95
    This Celestron ultra high contrast (UHC) light pollution filter has improved contrast when compared with the wider passband of a broadband filter, making it easier to pick out faint nebulas . . .
  2. Astro-Tech #12 Medium yellow 1.25" color filter

    $11.95
    This #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 . . .
  3. Astro-Tech #56 Light green 1.25" color filter

    $11.95
    If 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 . . .
  4. Explore Scientific 2" 0.9 Neutral Density Filter 13% Transmission

    $59.99
    • 2" Diameter Filter
    • Works best in 6-8 inch telescopes
    • Get more out of your lunar observing
  5. Antares 2" #ND9 13% Transmission neutral density grey Moon filter

    $19.95
    This Antares 2" 13% transmission neutral gray filter reduces the brightness and glare that can mask low contrast details during lunar and planetary observing . . .
  6. 48mm Oxygen III line band filter for 2" eyepieces

    $139.95
    This 2" Celestron Oxygen III light pollution filter has a very narrow passband that blocks out almost all unwanted light pollution, making it a good choice for nebula observing from city and suburban locations . . .
  7. Astro-Tech #29 Dark red 1.25" color filter

    $11.95
    If 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 . . .
  8. Lunt 1.25" polarizing filter

    $45.00
    The 1.25" Lunt PF1.25 polarizing filter is designed for use with 1.25" eyepieces in the Lunt LS1.25HW Solar Wedge to control the image brightness during white light visual observing.
  9. LP-4 H-Beta Line band filter for 1.25" eyepieces

    $79.50
    Very steep cut-off slopes and a narrow passband make this 1.25" Thousand Oaks H-Beta filter ideal for viewing certain very faint emission nebulas like the California, Cocoon, and Horsehead.
  10. 48mm UHC narrowband filter for 2" eyepieces

    $124.95
    This 2" Celestron ultra high contrast (UHC) light pollution filter blocks out most unwanted light pollution, making it easier to pick out faint nebulas from suburban and dark sky observing sites alike . . .
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