Cuts ultraviolet below 400 nm and near-infrared above 700 nm
Construction
Substrate / coating
Multi-layer anti-reflection coating
Use
Camera use
Color cameras with AR windows and mono luminance-style imaging
Best for
Sharper visible-light lunar, planetary, and broadband imaging
Astrophotography Fit
Best as a specialty planetary or lunar contrast filter, not a general deep-sky filter.
ZWO UV/IR Cut 1.25-inch Filter is a budget-friendly UV/IR cut filter (1.25"). Passbands: Visible 400-700 nm.
Best as a specialty planetary or lunar contrast filter, not a general deep-sky filter.
Choose filter size around the sensor diagonal, telescope speed, and filter-wheel or drawer geometry. Flats are still required; a filter can improve contrast, but it will not rescue tilt, bad focus, or poor calibration.
Best paired with
Monochrome planetary cameras and long focal length scopes
Good seeing, high-frame-rate capture, and derotation/stacking software
Lunar or planetary sessions where IR contrast is useful
Not recommended for
General color deep-sky imaging
Visual observing without a clear contrast purpose
Beginners looking for their first all-purpose filter
Where To Buy
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