Manufacturer: Baader
Product number: BA2458429V

EUR 304,00


incl. 19 % VAT (DE)  
The VAT indicated refers to that applicable in Germany. After logging in, the VAT amount is adjusted to the applicable VAT of the stored delivery country. Therefore, the final price may vary accordingly.
excl. 6.95 € shipping costs (DE)  
Please log in to calculate shipping costs to your country.
more details to the shipping costs ...

  • On stock
  • Only 2 pcs left in stock





There are no reviews for this product
  • Details..
  • Technical data..
  • In the box..
Baader 4.5 nm Ultra-Narrowband Sulphur Filter
The nebula filter allows for even higher-contrast images in the red spectral range around 673 nm which is so important for astrophotography. Finest detail of nebulae are shown better and stars are suppressed even stronger. The filter can also be used for extreme images of planetary nebulae (red range).

Of course this filters also have the proven Baader anti-reflective coating which reliably prevents ghost images.

Due to the extremely narrow range of only 4.5 nm, a particularly high CWL accuracy (central wavelength) is necessary. That requires greatest skills and only few manufacturers worldwide have the necessary abilities.
Type:Sulphur filter
Size:36 mm unmounted
Filter thickness without cell:2 mm
FWHM:4.5 nm full width at half maximum
CWL:673 nm central wavelength
Coating:Dielectrically coated
Surface:Plane-optically polished
Baader Ultra Narrowband Sulphur Filter


Reviews

Written by Alexander Sielski
on 2020-10-14

"Gute Qualität wie gewohnt von Baader."