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Model: 8H00KABrand: Astronomik
Generally In Stock, Please Confirm Before Ordering
The OWB filter would usually not be designated as an "astronomical" filter. The intention is to enable converted DSLR cameras (without inbuilt IR-filter) in order to be used for 'terrestrial' photography.
Astronomik have re-designed all of their photographic filters. Since the end of 2008 they are shipping the new "Halo-Free" filters.
The OWB (Original White Balance) filter shifts the complete spectrum of a converted DSLR in such a manner that the camera will not be exclusively usable for astro-photography. Therefore the decision, which in former times had to be made, whether to 'victimize' a DSLR in order to exclusively use it for astronomical tasks or accept the lower sensitivity on the red end of the spectrum it is now a thing of the past and disencumber your purse, too.
The OWB EOS Clip filter fits in all Canon cameras of the type series 20D(a)-50D, 300D-550D and 1000D. (Please ask if you have a different camera.)
DSLR cameras which have been converted for astronomical use by removing the inbuilt IR-filter or by substituting it with a filter with greater range for H-alpha, have a white balance that made them unable for 'terrestrial' purpose. The spectral sensitivity of the DSLR will be changed by an OWB-Filter to the former range. In other words: The OWB pretend to be the conventional built-in filter!
Visual observation (dark skies): UnsuitableVisual observation (urban skies): UnsuitableFilm photography: UnsuitableCCD photography: UnsuitableDSLR photography (original): UnsuitableDSLR photography (astro modified): Very good, achieves a standard white balance for 'terrestrial' photographyDSLR photography (MC modified): Very good, achieves a standard white balance for 'terrestrial' photographyWebcam / Video (Planets): UnsuitableWebcam / Video (Deep Sky): UnsuitableTechnical Data
Special spectrum in order to adapt modified DSLR cameras (removed or substituted inbuilt IR-filter) to achieve standard colour space in digital imaging.Glass thickness: 1 mmParfocal with other Astronomik filtersCompletely resistant against high humidity, scratches and aging effectsDiffraction limited, the filter will not reduce the optical performance of your telescope (or camera in this case)!Astronomik filters are delivered in a high-quality, long lasting, filter box
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