Manufacturer: Baader
Product number: BA2459206

EUR 169,00


incl. 19 % VAT (DE)  
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excl. 6.95 € shipping costs (DE)  
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Baader UV/IR Blocking Filter and L-Filter
This filter from Baader Planetarium offers a wide range of applications. Baader filters are plano-optically polished, anti-reflective and offer highest contrast and sharpness. The Baader infrared blocking filter can be used in a wide range of applications, for example:
Luminance filter/L filter for L-RGB images with CCD cameras (astrophotography)
Infrared cut filter for deep sky recordings with cameras without IR cut filter, blurred star images are prevented
Infrared blocking filter for images of the moon and planets to increase sharpness by blocking the IR light
Reflection of thermal radiation and blocking of UV radiation, therefore the filter is also used for solar observation and photography.


Mechanical properties:
the only filters with homofocally plane-polished substrates. Each individual filter is fine-optically polished to 1/4 wavelength
Baader filters are hardcoated separately. The individual filters are not drilled out of large plates as usual.
drilled out filters show micro cracks at the edge of the quenched and tempered layer, which tend to absorb moisture due to capillary action
all Baader filters have individually coated heat-treated edges, so moisture penetration is impossible
Baader filters were boiled in water for one hour during long-term ageing tests (for example at B+W Filter/Schneider Kreuznach) and, in contrast to drilled filters, remained completely undamaged.
scratch-resistant hard coatings of Baader filters can be cleaned as often as required - preferably with Baader OpticalWonder cleaning liquid


Optical properties
no reflections in comparison to competing filters
maximum contrast due to extremely steep edges on all transmission curves

Filter design:Interference filter
Edges:sealed, no moisture penetration
Polish:Fine-optically, 1/4 wavelength
Coating:Hard coating, scratch resistant
Substrate thickness:3 mm
Dimensions:50x50 mm square
UV/IR blocking filter in protective container



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