Astronomik OWB-CCD
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)-40D, 300D-450D 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
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): Verry good, achieves a standard white balance for 'terrestrial' photography
- DSLR photography (MC modified): Verry 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
The filter is available in the following sizes- Mounted filter in 1,25" cell (M28,5mm x 0,5mm), 83,19€*
- Mounted filter in 2" cell (M48,5mm x 0,75mm), 133,61€*
- Mounted filter in T2 cell (M42mm x 0,75mm), 100,00€*
- Mounted filter in SC cell (2" x 24Tpi), 133,61€*
- Mounted filter in EOS-Clip cell, 108,40€*
- Unmounted filter with 50mm diameter, 133,61€*
- Unmounted filter with 38mm diameter, 91,60€*
- Unmounted filter with 36mm diameter
- Filters with custom diameters are available upon request
* suggested net retail price
Ordering filters
Stand: 13.01.2010 15:58:13
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