ZWO IR Pass 850nm Filter - 1.25" Mounted
ZWO
ZWO IR 850nm Pass Filter is an Infrared pass filter in 1.25" for planetary and lunar contrast work.
Best Current Offer
Specifications
Filter
- Filter type
- Infrared pass filter
- Filter size
- 1.25"
- Glass thickness
- 2 mm
Spectral
- Passbands
- IR pass 850 nm
- Band count
- 1 band
- Blocking
- Blocks visible wavelengths and passes near-infrared above 850 nm
Construction
- Substrate / coating
- IR-pass coating
Use
- Camera use
- IR-sensitive planetary cameras
- Best for
- Lunar and planetary imaging in poor seeing
Astrophotography Fit
Best as a specialty planetary or lunar contrast filter, not a general deep-sky filter.
ZWO IR 850nm Pass Filter is a budget-friendly Infrared pass filter (1.25"). Passbands: IR pass 850 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
Some links on this page are affiliate links. Prices and availability are pulled automatically from each retailer and updated daily.
| Retailer | Price | Availability | View Offer |
|---|---|---|---|
| Cloud Break Optics Cloud Break Optics | $29.00 | In stock Updated 5/10/2026 | View Offer - $29.00 |
| Starizona Starizona | $29.00 | In stock Updated 5/10/2026 | View Offer - $29.00 |
| ZWO USA ZWO USA | $29.00 | In stock Updated 5/15/2026 | View Offer - $29.00 |
Price History
Chronological retailer pricing with out-of-stock points shown at reduced opacity.