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Model: 8h00skBrand: Astronomik
Generally In Stock, Please Confirm Before Ordering
UV and IR cut Filter 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%.Main useThe 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.Other usesAs a dust protection of Schmidt-Cassegrain, Schmidt-Newton or Maksutov system or as a dust protection in front of DSLR camera.As an alternative instead of the IR-Blocker if your camera has a high sensitivity at short wavelengths.As an alternative instead of the MC Clear if your system has any refracting elements
AlternativesYou 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 luminace data instead!
SuitabilityVisual observation (dark skies): It depends, for dust protection onlyVisual observation (urban skies): It depends, for dust protection onlyFilm photography: It depends, for dust protection onlyCCD photography: Very good, if used with optics which contain refracting elementsDSLR photography (original): It depends, for dust protection onlyDSLR photography (astro modified): It depends, for dust protection onlyDSLR photography (MC modified): Very good, if used with optics which contain refracting elementsWebcam / Video (Planets): Very good, if used with optics which contain refracting elementsWebcam / Video (Deep Sky): Very good, if used with optics which contain refracting elements
Technical DataParfocal with other Astronomik filtersGlass thickness: 1mmCompletely resistant against high humidity, scratches and aging effectsDiffraction limited, the filter will not reduce the optical performance of your telescope!Astronomik filters are delivered in a high-quality, long lasting, filter boxSince 2008 we do ship filters with a completely new design. Any kind of halo or strange reflection is a matter of past
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Astronomik 2" M48 To EOS Clip Filter Adaptor£29.99
A small but very useful adaptor. If you have any Astronomik clip filter, this handy adaptor allows you to use these on any 2" eyepiece using the filter thread on the bottom.