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1.25" Oxygen III Line band filter
$99.95This Celestron Oxygen III light pollution filter has a very narrow passband for very high contrast on emission nebulas, making it a good choice for city and suburban observing . . . -
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 . . . -
Explore Scientific 1.25" 0.9 Neutral Density Filter 13% Transmission
$49.99- 1.25" Diameter Filter
- Works best in 6-8 inch telescopes
- Get more out of your lunar observing
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Celestron 18% Transmission green 1.25" Moon filter
$9.95This medium green 1.25" filter reduces irradiation, glare, and excess image brightness in lunar observing . . . -
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 #58 Dark green 1.25" color filter
$11.95This Astro-Tech #58 dark green 1.25" eyepiece filter is very helpful when observing the Moon and Mars, plus enhances a variety of features on all the other planets from Venus to Saturn If you have a scope 8" in aperture and larger . . .
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