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Astronomik ProPlanet 642 IR Pass Filter - 50 mm Square - P642-50SQ

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SKU: ASF-P642-50SQ

Astronomik ProPlanet 642 IR-Pass Filter - 50 mm Square


The latest contribution to the Astronomik ProPlanet IR-pass filter family, the ProPlanet 642 BP enables a wide range of daytime IR photography applications, as well as high resolution lunar and planetary imaging, and, when used for astrophotography, stunning deep sky image captures of H-Alpha region objects.

The P642 IR-Pass Filter offers a 200 nm spectral window between 642 nm and 842 nm. As opposed to the other two Astronomik ProPlanet filters, the P642 blocks the longer infrared. Astronomik is now providing users with three separate options for their IR-imaging needs, this P642 filter as well as their other two ProPlanet filters, the 742 and 807. For best imaging, the ProPlanet 642 will frequently be the ideal choice.

Daylight IR-Imaging:

  • High contrast images offer excellent color presentation
  • Clear images with "wood effect"
  • No longer IR hot spot
  • Short exposure times comparable to normal VIS-imaging
  • Ideally fitted for infrared videos


High Resolution Lunar & Planetary Imaging:

  • Short exposure times
  • Efficient seeing reduction
  • Enhanced contrast
  • Obstructing the longer IR removes ghosting and allows for maximum sharpness


Deep-Sky Astrophotography of H-Alpha Regions:

  • Finest H-Alpha line transmission at 656 nm
  • FWHM of approximately 40 nm with astro-modified Digital SLR cameras
  • Incredible contrast even in moonlight or severely light polluted conditions
  • Sensibly priced filter for casual H-alpha imagers
  • Simple focusing enabled by the combination of camera display and LiveView


Technical Specifications


  • More than 96% transmission for the 642 nm to 842 nm wavelength range
  • Blocks wavelengths between 350 nm and 630 nm
  • Parfocal with any other filter Astronomik carries
  • 1 mm glass thickness
  • Coatings provide full resistance to the effects of scratching, aging, and high humidity
  • This filter is diffraction limited and therefore will maintain your telescope's current optical performance level
  • Astronomik filters come with a long-lasting, supreme quality plastic storage case