Baader Planetarium H-Alpha 7nm Narrowband Filter 50.8mm Unmounted

Priced: $321.00
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Baader Planetarium H-Alpha 7nm Narrowband Filter 50.8mm Unmounted -

The Baader Planetarium H-Alpha 7 nm Narrowband Filter delivers the absolute highest contrast deep sky images of H-II regions, all with the shortest exposures possible. Its narrow 7 nm FWHM bandwidth has a transmission at H-Alpha of over 90%, while completely rejecting light pollution.
The high optical quality of the Baader 7 nm H-Alpha filter guarantees no loss in sharpness or contrast. Each substrate is fine-optically polished plane parallel to deliver a smooth and accurate 1/4 wavefront over the entire surface. This special custom polishing operation sets Baader filters apart from the standard precision polished filter substrates used by most other filter manufacturers. Coatings are professionally applied by the most sophisticated equipment available, ensuring high consistency for bandpass centering and transmission. The ultra-hard ionbeam deposition ensures the coatings will never degrade from use or normal cleaning.

Lining and Layers:

  • Multi-layer dielectric coatings are plasma-assisted and ionbeam-hardened using the latest technology

Features:

  • The Baader Planetarium Narrowband 7 nm H-alpha Filter substrate is fine-optically polished plane parallel for 1/4 wavefront over entire surface
  • The Baader Planetarium Narrowband 7 nm H-alpha Filter is 50.8 mm, unmounted, and is designed specifically for the SBIG STL series CCD cameras
  • Completely rejects light pollution and has a transmission of over 90%
  • Baader Planetarium Narrowband 7 nm H-alpha Filter coatings will never degrade from use or normal cleaning
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Designed for:SBIG STL Series CCD Cameras
Filter Type:Narrowband
Filter size:50.8mm / 2"

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