Skip to content

UPS Shipping Delays / COVID-19 Response Statement

Astronomik ProPlanet 642 IR Pass Filter - 31 mm Round - P642-31

shipping truck Free shipping
SKU: ASF-P642-31

Astronomik ProPlanet 642 IR-Pass Filter - 31 mm

The most recent addition to the Astronomik ProPlanet IR-pass filter family, the ProPlanet 642 BP facilitates an extensive array of applications for daytime IR photography, high resolution Moon and planetary imaging, and taking awe-inspiring photos of deep sky targets in the H-Alpha portion of the spectrum 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 feature superb color rendition
  • Transparent images with "wood effect"
  • No longer IR hot spot
  • Short exposure times comparable to regular VIS-imaging
  • Works best for infrared videos

High Resolution Lunar & Planetary Imaging:

  • Short exposure times
  • Productive seeing decrease
  • Optimized contrast
  • Longer IR is blocked to remove ghosting and facilitate maximum sharpness

Deep-Sky Astrophotography of H-Alpha Regions:

  • Finest H-Alpha line transmission at 656 nm
  • Close to 40 nm FWHM with astro-modified Digital SLR cameras
  • Amazing contrast in moonlight or in heavily light polluted conditions
  • Sensibly priced filter for casual H-Alpha imagers
  • Camera display coupled with LiveView allows easy focusing

Technical Specifications

  • More than 96% transmission for wavelengths in the range between 642 nm to 842 nm
  • Blocks 350 nm to 630 nm wavelengths
  • Parfocal with all other available Astronomik filters
  • Glass thickness: 1 mm
  • Fully resistant to the impacts of scratching, aging, and high humidity
  • Diffraction limited, this filter will not reduce your telescope's optical performance
  • Astronomik filters are delivered with a long-lasting, high quality plastic filter container