Astronomik - Planet IR Pro 742 Filter - 36mm Round Unmounted

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The Astronomik ProPlanet 742 is the ideal filter for imaging the moon and planets with telescopes 6" (150mm) aperture and greater....

SKU: ASN-P742-36
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Product Description

ASTRONOMIK - ProPlanet 742 IR Filter -  36mm  (Un-Mounted)

The Astronomik ProPlanet 742 is the ideal filter for highly detailed inspection of the moon and planets with telescopes of 6" (150mm) aperture.and greater.

The ProPlanet 742 IR only allows infrared light with wavelengths of more than 742 nm to pass.  In this wavelength range the negative results of  "seeing" are significantly lower than in the visible spectrum of the human eye. This allows much sharper images than are usually obtained from your telescope and location. Another advantage is that the sky background of advanced dawn is dark and so the filter even allows photography of the planets and the moon at daylight.

The Astronomik ProPlanet 742 cuts off the visible part of the spectrum and allows the light of wavelengths longer then 742nm to pass.  Due to this, the part of the spectrum that is most sensitive to "bad seeing" is rejected. This results in vastly improved  imaging of planets and our moon. The image is more steady than the image in visible light with nearly identical exposure times.

Besides astrophotography, the filter allows you to get stunning results in nature photography.  If an EOS-Clip Filter is used in an MC modified DSLR you get tremendous results imaging flora and fauna. The filter cuts off the part of the spectrum where chlorophyll looks green and shows its high reflectivety in the near infrared. If trees are photographed in spring and summer under blue skies you get stunning images with white trees and clouds in front of a near black backgrounds. The Astronomik ProPlanet 742 darkens the background during twilight and allows imaging of bright planets, stars and comets by day. It also promotes imaging of young stars in dust clouds and stellar nurseries. When the seeing is very bad and the instrument is 10" (250 mm) or larger, the Astronomik ProPlanet 807 may be the better choice.

Astronomik 36mm ProPlanet 742 IR Filter - Features:

  • More then 96% transmission for wavelengths of 742nm to 1100nm
  • Blocking of wavelengths between 350nm and 730nm
  • Parfocal with other Astronomik filters
  • Glass thickness: 1mm
  • Completely resistant against high humidity, scratches and aging effects
  • Diffraction limited, the filter will not reduce the optical performance of your telescope
  • Astronomik filters are delivered in a high-quality filter box






Name Astronomik - Planet IR Pro 742 Filter - 36mm Round Unmounted
Manufacturer Astronomik
Model ASN-P742-36


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