Omegon Blocking Filter Infrared Filter 1.25″

Omegon Blocking Filter Infrared Filter 1.25″ is designed to effectively block the infrared spectrum, which is crucial when using modern CCD or CMOS cameras and when making visual observations with high-quality optics. Many lenses and optical systems allow infrared light to pass through while it is not focused on the same focal plane as visible light. The result: blur, color cast or loss of detail.

With this filter, all light above about 700 nanometers - the infrared spectrum - is actively blocked. This provides a sharper image and prevents chromatic distortion or halo effects around bright stars. Especially in astrophotography with color cameras without built-in IR-cut, this filter is essential. Visual observation with APO refractors or ED lenses can also improve the image by reducing color errors.

The filter fits any 1.25″ eyepiece, camera adapter or filter wheel. The glass is multi-coated and carefully ground for minimal reflections and maximum transmission of visible light.

Advantages
✓ Blocks infrared light (from ~700 nm)
✓ Improves sharpness and color in photography
✓ Prevents chromatic distortion in visual use
✓ Ideal for cameras without an internal IR-cut filter
✓ Fits all 1.25″ accessories and filter wheels

Specifications

• Type: Infrared blocking filter
• Connection: 1.25 inches (31.75 mm)
• Transmission: High within 400-700 nm, blocking above that
• Mounting: Aluminum, black anodized with fine threads
• Coating: Multiple anti-reflective
• Application: Astrophotography and visual use with APOs or ED refractors
• Not suitable for: Narrowband applications or emission line insulation

Application
The Omegon Blocking Filter Infrared Filter 1.25″ is ideal for astrophotographers working with color cameras without integrated IR cut and for visual observers who experience hindrance from color cast or blur. An indispensable accessory for anyone who wants to get the most out of their optics and camera.