Skip to content

ZWO Cameras 10% Off!

Astronomik ProPlanet 742 IR Pass Filter - 36 mm Round - P742-36

shipping truck Free shipping
SKU: ASF-P742-36

Astronomik ProPlanet 742 IR-Pass Filter - 36 mm


  • Expressly designed for imaging planets, this Astronomik ProPlanet 742 IR-Pass Filter comes in a round 36 mm machined cell format
  • Made to the highest technical principles to provide the desired optical performance users require when imaging planets using telescopes with apertures between 5" and 8"
  • The Astronomik ProPlanet 742 IR-Pass Filter only permits infrared light with wavelengths longer than 742 nm pass through to the image
  • Atmospheric turbulence will not afflict planetary images since they are formed from IR light
  • Multi-layer coatings on all Astronomik filters protect them from the effects of scratching, aging, and high humidity
  • Made in Germany, a country noted for producing high quality optics!


More About the Astronomik 36 mm ProPlanet IR 742 Filter


For capturing stunning images of the Moon and planets, specifically Mars, with telescopes that have apertures of 6" (150 mm) or higher, the Astronomik ProPlanet 742 IR-Pass Filter is the optimal choice. Only infrared light with wavelengths over 742 nm is allowed to pass through. Seeing effects are substantially reduced in this area of the spectrum versus the visual spectrum of the human eye. This results in images that are significantly sharper than what could typically be achieved from your device and location. Another advantage of the ProPlanet 742 IR is that it still facilitates a dark sky background even in late dawn. This allows lunar and planetary photography to continue even at daybreak.

The Astronomik P742 filter offers tremendous enhancement of lunar and planetary images by simultaneously obstructing visible light while permitting only emissions from wavelengths longer than 742 nm to be transmitted through to the image. Compared to the image in visible light, this image is more steady with exposure times that are nearly identical. Furthermore, like all filters offered by Astronomik, the ProPlanet IR 742 is parfocal with all other Astronomik filters.

Astro-imaging of the Moon and planets is not the P742 IR filter's only purpose as it also enables incredible terrestrial photography results. If the EOS-Clip P742 filter model is employed in an MC modified DSLR camera, you'll obtain excellent results imaging nature. It eliminates the portion of the spectrum where chlorophyll looks green, and shows its high near infrared reflectiveness. When taking photographs of trees in the spring and summer under clear skies, the resulting image is striking. Trees and clouds are displayed as white in front of an almost completely dark background.

Transmission Specifications


  • 96%+ transmission for wavelengths between 742 nm and 1100 nm
  • Blocks undesired wavelengths from 350 nm to 730 nm