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Astronomik IR Blocking Filter - 1.25" - IR-1

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Astronomik 1.25" IR Blocking Filter

When sensors with low sensitivity in the UV area of the spectrum (e.g. Webcam, Meade DSI and LPI, and most video systems) are employed, this Astronomik IR-Blocking Filter should be used as standard equipment. Place this filter ahead of your camera to do away with all IR-caused nuisances such as that bright halo effect surrounding objects as well as general image softness.

Comparing the Astronomik IR Blocker's transmission data with data from alternative sources, you'll find that the majority of other manufacturers would label this an UV-IR blocker already. However, the filter Astronomik labels a "UV-IR blocker" is finer than any UV-IR blocker available from any other manufacturer in the world!

The Astronomik 1.25" IR-Blocking Filter is enhanced for systems with focal ratios ranging from f/0.5 to f/50. Typical transmission is above 99%. It can be used as a dust protector for DSLR cameras as well as Schmidt-Cassegrain, Schmidt-Newtonian, or Maksutov telescopes; as a substitute for the UV-IR blocker provided your camera has low sensitivity at short wavelengths; and as an alternative to the MC Clear filter provided your system does not contain any refracting elements.

Astronomik IR-Blocking Filter - 1.25" Highlights

  • Blocks all IR light without restricting the visual portion of the spectrum
  • Serves as an excellent dust protector for your telescope or camera
  • Parfocal with all other filters from Astronomik
  • Offers total resistance to the impacts of scratches, aging, and high humidity
  • Diffraction limited, this filter will not have a negative influence on your telescope system's optical performance
  • The Astronomik 1.25" IR-Blocking Filter comes with a long-lasting plastic storage container of superior quality