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1.25" UHC Narrowband filter
$89.95This 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 . . . -
48mm UHC narrowband filter for 2" eyepieces
$124.95This 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 . . . -
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 . . . -
48mm Oxygen III line band filter for 2" eyepieces
$139.95This 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 . . . -
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 . . . -
Antares 2" #ND9 13% Transmission neutral density grey Moon filter
$19.95This Antares 2" 13% transmission neutral gray filter reduces the brightness and glare that can mask low contrast details during lunar and planetary observing . . . -
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LP-4 H-Beta Line band filter for 1.25" eyepieces
$79.50Very 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. -
LP-4 H-Beta Line band filter for 2" eyepieces
$159.50Very steep cut-off slopes and a narrow passband make this 2" Thousand Oaks H-Beta filter ideal for viewing certain very faint emission nebulas like the California, Cocoon, and Horsehead. -
1.25" Color filter set for Questar eyepieces
$345.00This Questar filter set for planetary observing consists of ten 1.25" stackable color filters that are threaded to fit the barrels of Questar Brandon eyepieces only.
