Baader 3.5 / 4nm Ultra-Narrowband Filter-Set CMOS-optimised (H-alpha / O-III / S-II)

Product code: 2961670
in stock
£630.00
£525.00 (ex. VAT)

PREORDER : 2 weeks

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Product information

  • Baader H-alpha / O-III / S-II Ultra-Narrowband Filter Set Premium Grade
  • 3.5 / 4 nm FWHM (to harmonize the exposure time from H-alpha with O-III / S-II), recommended for optical systems from f/10 to f/3.5
  • For highest contrast even at strongest light pollution, minimizes star size, emphasizes finest nebula detail indispensable under Bortle 9/8/7/(6) skies
  • Reflex-Blocker hard coated and planeoptically polished with sealed coating edges (Life-Coat)
  • Blackened edges all around, with filter-lead-side-indicator in the form of a black frontside outer rim
  • Optimized for modern CMOS cameras, but excellent for CCD camera technologies

We explicitly warn against observing the sun with a DeepSky 3.5 nm (equivalent to 35 Ångstroem) H-alpha narrowband filter, specialized solar chromosphere and prominence filters from SolarSpectrum start at 0.8 Ångstroem. Photographic experiments with a camera are theoretically possible, but by no means observe the sun with naked eyes you endanger your eyesight!

Product Info

PREORDER 2 weeks
Brand Baader
Product Code 2961670
Delivery Weight Package
0.5kg