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Astronomik ProPlanet 642 IR Pass Filter - 42 mm Round - P642-42

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SKU: ASF-P642-42

Astronomik ProPlanet 642 IR-Pass Filter - 42 mm Round

The ProPlanet 642 BP is the most recent addition to Astronomik's ProPlanet IR-pass filter family. This filter offers a wide assortment of applications for daytime IR photography, high resolution imaging of the Moon and planets, and capturing gorgeous deep sky images of objects in H-alpha regions when used for astro-imaging.

A 200 nm spectral window from 642 nm to 842 nm is provided by this filter. The P642 blocks the longer infrared, as opposed to the other two Astronomik ProPlanet filters. For your IR-imaging requirements, Astronomik now offers three distinct options. The ProPlanet 642 will frequently be the proper choice for ideal imaging.

Daylight IR-Imaging:

  • High contrast images with excellent color rendition
  • Transparent "wood effect" images
  • No hot spot in the longer IR
  • Short exposure times comparable to regular VIS-imaging
  • An optimal fit for infrared videos


High Resolution Lunar & Planetary Imaging:

  • Short exposure times
  • Sufficient reduction in seeing
  • Enhanced contrast
  • Blocking the longer IR eliminates ghosting and enables maximum sharpness


Deep-Sky Astrophotography of H-Alpha Regions:

  • Best transmission of H-alpha line at 656 nm
  • FWHM of about 40 nm with astro-modified Digital SLR cameras
  • Amazing contrast despite moonlight or severe light pollution
  • Reasonably priced filter for amateur H-alpha imagers
  • Camera display coupled with LiveView allows easy focusing


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 all other filters Astronomik carries
  • 1 mm glass thickness
  • Coatings protect this filter from the damaging effects of scratching, aging, and high humidity
  • Diffraction limited, this filter will maintain your telescope's current optical efficiency level
  • Astronomik filters arrive with a long-lasting, high quality plastic storage case