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Astronomik UHC EOS Clip-Filter
[ANK_UHC-EOS]

Price: 159,00 EUR

 
Product Details

Astronomik UHC EOS Clip-Filter - ANK_UHC-EOS

Het UHC filter van Astronomik is ultime allround filter voor visuele deepsky waarnemingen. Het UHC filter laat nagenoeg 100% door van de OIII en H-beta golflengten. Ook H-alfa licht wordt goed doorgelaten. Alle overigen golflengten worden door dit filter tegengehouden. Dit maakt de hemelachtergrond veel donkerder waardoor gasnevels en planetaire nevels ongelofelijk veel beter zichtbaar worden. Dankzij de zeer hoge transmissie van die golflengten die niet worden tegengehouden, is dit filter zelfs goed bruikbaar in kleinere telescopen. Iets waar menig ander merk UHC filter jalours op zal zijn.

Dit filter is geoptimaliseerd om gebruikt te worden in kijkers met een openingsverhouding tussen F4 en F15. Verlies van licht en kleurschifting onstaat bij het UHC filter van Astronomik alleen bij zeer snelle systemen van F3 en sneller.

Dankzij de hoge glaskwaliteit van het filter blijven sterren net zo klein als ze worden getoond zonder filter.

Bent u op zoek naar een filter om objecten als M8, M17, M27, M57, Helix nevel, California nevel en de Noord Amerika nevel te zien. Dit is HET filter! De eerste keer dat je de sluiernevel in detail ziet, zelfs vanuit de randstad, vergeet je nooit meer....

The Astronomik UHC is THE filter for visual observing.

You will enjoy using your Astronomik UHC filter because you will see more stars and more details in deep-sky-objects compared to using filters from all other manufacturers.

The Astronomik UHC (Ultra High Contrast) filter allows the transmission of nearly 100% of the radiation from both O-III and the H beta lines. Though the second window for the H-alpha-line is not intended for visual observing, it is important, if the filter is used with an electronic device. All annoying, scattered light from other wavelength sources, including local artificial light pollution, is reliably filtered out. With this strong blocking of the sky background an unexpected wealth of detail becomes visible for gas nebulae and planetary nebulae.

Main use

Astronomik UHC filters' astounding high light transmission brings better views of deep-sky-objects even to small telescopes! The high transmission of our optical glass filters means that enough light is available to allow successful visual observations with telescopes beginning at 2" (50mm) aperture. Our Astronomik filters are optimized for use with telescope focal length f / ratios of f/4 to f/15. Transmission losses and chromatic distortions, which arise with other filters, only occur with Astronomik filters when extremely bright aperture ratios of 1:2 and more come into play. Another major advantage of our Astronomik UHC filter is the high optical quality of the filter glass. When using Astronomik UHC filters you will quickly notice the same needle-sharp stars which you are familiar with from your astronomical instrument without any filter!

Suitability

  • Visual observation (dark skies) : Very good, for telescopes of all apertures and high exit pupil
  • Visual observation (urban skies) : Very good, for telescops from 100mm aperture
  • Film photography: Reasonable, but very long exposure time
  • CCD photography: Good, when used with an additional IR-block-filter
  • DSLR photography (original) : Good, colour balance shifted but contrast enhanced
  • DSLR photography (astro modified) : Very good, colour balance is near perfect
  • DSLR photography (MC modified) : Good, when used with an additional IR-block-filter
  • Webcam / Video (Planets) : Unsuitable
  • Webcam / Video (Deep Sky) : Good, if light pollution is a big problem

Technical Data
  • Transmission of nearly 100% of O-III and H-beta
  • Transmission of 96% of H alpha
  • Entire Blocking of annoying wavelengths
  • Ideal All-round Deep Sky filter even for small telescopes
  • Not sensitive to humidity or aging
  • Scratch-resistant!
  • Excellent carrier material. The optical Leitungs of your telescope is not reduced by the filter in any way.
  • 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, long lasting, filter box
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