Astronomik OWB-CCD Typ 2

The OWB filter would usually not be designated as an "astronomicalÓ filter. The intention is to enable converted DSLR cameras (without inbuilt IR-filter) in order to be used for 'terrestrial' photography.

We have re-desgined all of our photographic filters. Since the end of 2008 we are shipping our new "Halo-Free" filters. read more...

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.

Main use

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!

Other uses

None

Suitability

Visual observation (dark skies): Unsuitable
Visual observation (urban skies): Unsuitable
Film photography: Unsuitable
CCD photography: Unsuitable
DSLR photography (original): Unsuitable
DSLR photography (astro modified): Very good, achieves a standard white balance for 'terrestrial' photography
DSLR photography (MC modified): Very good, achieves a standard white balance for 'terrestrial' photography
Webcam / Video (Planets): Unsuitable
Webcam / Video (Deep Sky): Unsuitable

Technical Data

Special spectrum in order to adapt modified DSLR cameras (removed or substituted inbuilt IR-filter) to achieve standard colour space in digital imaging.
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