Astronomik Luminance Filter - 31mm Round Mounted

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  • Regular price $55.95
  • ITEM #
    AK-L-31

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Features

Astronomik Luminance Filter - 31mm Round Mounted

Astronomik 31 mm Luminance (IR/UV Blocking) Filter
Mounted in Low Profile Non-Threaded Cell

The Astronomik UV and IR cut Filter is great for for digital photography! The Astronomik UV-IR Blocker lets the full range of sensitivity of the human eye (according to DIN 5031) pass, and blocks all other parts of the spectrum in the UV and IR. The Astronomik UV-IR Blocker is the ideal choice as a luminance filter for any kind of digital photography.

Because of the perfect blocking of UV and IR all optical problems in these parts of the spectrum are avoided. The filter is optimized for systems with focal ratios between f/0.5 and f/50. The typical transmission is higher than 99%.

Because of the perfect blocking of UV and IR all optical problems in these parts of the spectrum are avoided. The filter is optimized for systems with focal ratios between f/0.5 and f/50. The typical transmission is higher than 99%.

The UV-IR Blocker gives you a perfect parfocal filter for the luminance channel. It is also great as a dust protection for your telescope and camera. It works as a dust protection of Schmidt-Cassegrain, Schmidt-Newton or Maksutov system or as a dust protection in front of DSLR camera and can be used as an alternative instead of the IR-Blocker if your camera has a high sensitivity at short wavelengths. Try using the Astronomik Luminance (IR/UV Blocking) Filter as an alternative instead of the MC Clear if your system has any refracting elements.

You should think about using the IR-blocker if your camera has a low sensitivity at short wavelengths. Think about using the MC Clear glass if you have a system without any refracting elements. If you do color imaging from light polluted places, please think about using the CLS CCD filter for the luminance data instead!

Now Mounted in Low Profile Non-Threaded Cell

Sometimes unmounted filters can be hard to handle. The smaller diameters, such as this 31 mm Luminance filter, can be especially difficult to pick up and insert or remove from the filter wheel, and that can lead to possible damage as well as unwanted reflections from incorrectly installed filters. Astronomik has solved this problem by mounting their 31 mm and 36 mm filters in a low profile (3 mm) non-threaded cell. O-rings, washers, or spacers are no longer required to hold the filter in place, and because the cell is only 3 mm thick, it works well in all appropriately sized filter wheels. Mounted 31 mm and 36 mm Astronomik filters will also play nice with unmounted versions in the same carousel.

Astronomik Luminance (IR/UV Blocking) Filter - 31mm Round Mounted Features

  • Parfocal with other Astronomik filters
  • Glass thickness: 1mm
  • Cell thickness: 3 mm
  • 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, long lasting, filter box
Astronomik Product Number: L-31

Additional Information

Filter TypeLuminance
Free ShippingYes
ManufacturerAstronomik
ShapeRound
Size31mm
Warranty10 Year Warranty

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