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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 . . . -
#38A Dark blue 1.25" Series 4000 color filter
$14.95Recommended applications for this filter:
Moon - Somewhat useful for improving contrast between lunar features in scopes 8" and larger. Mercury - May improve observations of rarely visible dusky surface features at twilight, when the planet is near the horizon. Venus - Increases contrast of occasional faint dark shadings in upper Venusian clouds. Mars - Useful . . . -
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 . . . -
Variable polarizer for imaging with 3.5" and 7" Questars
$495.00This Questar variable polarizing assembly allows you to control the effective f/stop of a Questar telescope during terrestrial and lunar prime focus imaging. -
Astro-Tech 2" CrystalView Moon Filter
$19.95This Astro-Tech 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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