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SVBONY UV IR-Cut Telescope Filter
SVBONY UV IR-Cut Filter
SVBONY UV IR-Cut Filter
SVBONY UV IR-Cut Filter
SVBONY UV IR-Cut Filter
SVBONY UV IR-Cut Filter
SVBONY UV IR-Cut Filter
SVBONY UV IR-Cut Filter
SVBONY UV IR-Cut Filter
SVBONY 1.25 inch UV IR-Cut Telescope Filter
SVBONY UV IR-Cut Filter
SVBONY UV IR-Cut Filter
SVBONY UV IR-Cut Filter
SVBONY UV IR-Cut Filter
SVBONY UV IR-Cut Filter
SVBONY UV IR-Cut Filter
SVBONY UV IR-Cut Filter
SVBONY UV IR-Cut Telescope Filter
SVBONY 1.25 inch UV IR-Cut Telescope Filter

SVBONY UV IR-Cut Filter

by SVBONY
SKU SV-F9127A
CA$22.00 - CA$25.00
CA$22.00
CA$22.00 - CA$25.00
CA$22.00
Price Match Policy!
  • Blocks unwanted Ultraviolet (UV) and Infrared (IR) wavelengths
  • Standard 1.25" or 2" filter threads (per variant)
  • Improves image contrast and color fidelity in astrophotography
  • Reduces chromatic aberration, especially in refractor telescopes
  • Acts as a durable dust and debris shield for your camera sensor
4 in stock
Qualifies for FREE Shipping in Canada on orders over $500.
  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • UV IR Cut Filter, 1.25" and 2"

    This UV/IR Cut Filter, available in 1.25" and 2" sizes, is an essential component for any astrophotographer using a color camera, modified DSLR, or CCD. By blocking invisible ultraviolet and infrared light, this filter ensures your sensor only records the visible spectrum, resulting in sharper stars and truer colors. With standard 1.25" or 2" filter threads, it installs directly onto eyepieces, nosepieces and filter wheels of the matching size for immediate image improvement.

    Sharpen Your Images: The UV/IR Cut Advantage

    Many telescopes, particularly refractors, are not fully corrected for wavelengths outside the visible spectrum. When unfocused UV and IR light hits your sensor, it creates a soft halo around stars, reduces contrast, and can cause a magenta cast in your images. This filter eliminates that problem by acting as a "luminance" filter for your one-shot-color camera, transmitting only visible light for tighter, higher-contrast results.

    A Critical L-Filter for Color Imaging Setups

    For anyone using a modified DSLR, a dedicated astronomy CCD, or even a sensitive webcam for planetary imaging, this filter is not optional—it's necessary. Digital sensors have a native sensitivity to infrared light that the human eye lacks. This filter restores natural color balance, provides finer color gradation, and prevents the ghosting and internal reflections caused by IR radiation bouncing within the optical train.

    Protect Your Sensor with This Optical Glass Filter

    Beyond its optical benefits, this UV/IR Cut filter serves as a permanent, high-quality protector for your expensive camera sensor. Made from true optical quality glass, it shields the sensor from dust, moisture, and potential scratches without degrading image quality. It's an inexpensive insurance policy that keeps your primary imaging equipment safe while you work.

  • What is the main purpose of this UV/IR Cut Filter?

    Its primary job is to block invisible ultraviolet (UV) and infrared (IR) light from reaching your camera sensor. This is crucial because digital sensors are sensitive to these wavelengths, which can cause bloated stars, reduced contrast, and unnatural color casts in your astrophotos. It effectively cleans up the signal for a sharper, more accurate image.

    Do I need this UV/IR Cut filter for my modified DSLR camera?

    Yes, absolutely. When a DSLR is "astro-modified," the stock IR-blocking filter is removed to increase sensitivity to hydrogen-alpha light. A side effect is that the sensor becomes highly sensitive to all IR light, which will ruin color balance and sharpness. This external filter restores the necessary IR cut, allowing you to capture nebulae while maintaining correct star colors.

    How does the UV/IR Cut Filter help when imaging with a refractor telescope?

    Refractor telescopes, especially achromatic and some ED doublets, focus different colors of light at slightly different points. This effect, known as chromatic aberration, is often worse in the UV and IR spectrum. By blocking these wavelengths, the filter prevents the "blue-violet bloat" and soft focus associated with unfocused light, leading to a much sharper final image.

    Can I use this filter for visual observing?

    While it is optically transparent in the visible spectrum, a UV/IR cut filter typically provides no noticeable benefit for visual observing. The human eye is not sensitive to the wavelengths it blocks. Its primary application is for imaging with digital sensors.

    Will this UV/IR Cut Filter thread into my eyepiece?

    Yes, if you choose the matching size. The 1.25" version fits standard 1.25" filter threads and the 2" version standard 2" filter threads (M48x0.75), as used on eyepieces, nosepieces and filter wheels of that size.

    How will this filter affect imaging the Orion Nebula (M42) with my color camera?

    Using this filter when imaging the Orion Nebula (M42) will result in a significantly better image. It will produce tighter, more defined stars in the Trapezium cluster, better contrast between the glowing gas and dark dust lanes, and more natural color rendition in the faint outer loops. Without it, the bright core can easily appear bloated and lose detail due to IR signal.

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  • This product is covered by a standard manufacturer's warranty.