GSO 1.25" Moon Filter
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GSO's Moon filter is an economical yet high quality eyepiece filter for reducing the brightness of the Moon so greater detail can be observed on the lunar surface. Has 18% light transmission. Green tint helps reduce glare and improve contrast. Has a standard 1.25" filter thread (M28.5x0.6) so it can be screwed on to virtually any astronomy eyepiece or accessory that has 1.25" filter threads.
Comes in a protective plastic storage box. Metal filter cell with high quality optical glass substrate (not plastic as some other similarly priced Moon filters). Made in Taiwan.
Useful Resources
Filter Cell Specifications
D = Filter Cell Diameter = 31.1 mm / 1.22 in
T = Total Filter Height = 11.28 mm / 0.44 in
C = Filter Cell Height (Excluding Male Thread) = 7.8 mm / 0.31 in
M = Male Thread Length = 3.6 mm / 0.43 in
F = Female Thread = 2.12 mm / 0.08 in
S = Glass Substrate Thickness = 1.61 mm / 0.06 in
CA = Clear Aperture = 25.6 mm / 1.02 in
Other Information
- Country of Manufacture: Taiwan
GSO's Moon filter is an economical yet high quality eyepiece filter for reducing the brightness of the Moon so greater detail can be observed on the lunar surface. Has 18% light transmission. Green tint helps reduce glare and improve contrast. Has a standard 1.25" filter thread (M28.5x0.6) so it can be screwed on to virtually any astronomy eyepiece or accessory that has 1.25" filter threads.
Comes in a protective plastic storage box. Metal filter cell with high quality optical glass substrate (not plastic as some other similarly priced Moon filters). Made in Taiwan.
GSO's Moon filter is an economical yet high quality eyepiece filter for reducing the brightness of the Moon so greater detail can be observed on the lunar surface. Has 18% light transmission. Green tint helps reduce glare and improve contrast. Has a standard 1.25" filter thread (M28.5x0.6) so it can be screwed on to virtually any astronomy eyepiece or accessory that has 1.25" filter threads.
Comes in a protective plastic storage box. Metal filter cell with high quality optical glass substrate (not plastic as some other similarly priced Moon filters). Made in Taiwan.
Useful Resources
Filter Cell Specifications
D = Filter Cell Diameter = 31.1 mm / 1.22 in
T = Total Filter Height = 11.28 mm / 0.44 in
C = Filter Cell Height (Excluding Male Thread) = 7.8 mm / 0.31 in
M = Male Thread Length = 3.6 mm / 0.43 in
F = Female Thread = 2.12 mm / 0.08 in
S = Glass Substrate Thickness = 1.61 mm / 0.06 in
CA = Clear Aperture = 25.6 mm / 1.02 in
Other Information
- Country of Manufacture: Taiwan
GSO 1.25" Moon Filter