The new generation of Baader CMOS-optimized filters features:

• CMOS-Optimized Baader Filter
• Increased contrast
• Ever more narrow passbands
• Reflex-Blocker™ coatings, for largest ever freedom from halos, even under most adverse conditions concerning aux-optics
• FWHM on each filter category carefully designed to allow for 1:1:1 exposures, matched for typical CMOS quantum efficiency and s n ratio
• Identical filter thickness to existing standards, with utmost care for parfocality
• Blackened edges all around, with filter-lead-side-indicator in the form of a black frontside outer rim, to additionally eliminate any reflection due to light falling onto the edge of a filter
• Each filter coated individually, with sealed coating edge (NOT cut out of a larger plate with coatings left exposed read more)
• Life-Coat™: evermore hard coatings to enable a non-aging coating for life – even in a most adverse environment

• Technical Specifications

  MANUFACTURER		Baader Planetarium
  SUITABLE FOR F RATIO		> f 3.4
  TRANSMISSION RANGE		H-alpha O-III S-II
  FILTER THICKNESS (WITHOUT CELL)		2 mm Thickness = 1.25 2 31mm 36mm 3mm Thickness = 50.4mm 50×50 65×65
  HBW (HALFBANDWIDTH)		3.5 nm (H-alpha) 4 nm (O-III S-II)
  CWL (CENTRAL WAVELENGTH)		656,3 nm 500,7 nm 671,7 nm
  AR-COATING		Reflex-Blocker™ hard coated, planeoptically polished
  SPECIAL FEATURES		CMOS-optimized with Life-Coat™
  FILTER SIZE		Multiple
  FILTER USAGE		CMOS, CCD, H-alpha, O-III, S-II
  FILTER MOUNTED		Mounted (LPFC 6mm) Unmounted
  TYPE OF FILTER		Ultra-Narrowband
  SINGLE OR SET?		Singles and Filter-Set
  FILTER SHAPE		round square (depending on size)

  In the Box

  • Baader 4nm O-III filter CMOS-optimized – OPEN BOX

  • Manuals & Warranty

    Limited-Lifetime-Warranty for CMOS-optimized Baader filters

    A Baader Planetarium exclusive. Filters incorporating Baader Planetarium’s Life-Coat™ technology are so durable that Baader Planetarium warrants the coatings for the life of the filter. Baader Planetarium has developed Life-Coat™ using materials and processes that result in coatings which will not degrade or fail for a lifetime. Life-Coat™ coatings resist moisture, temperature extremes, and are hardened to withstand normal cleanings.

    Baader Planetarium guarantees their Life-Coat™ coatings will not peel, flake or physically degrade and will withstand repeated cleaning with fine optical cleaning equipment. The Limited Lifetime Warranty applies to the original purchaser and does not cover failure from mis-use, physical damage through improper handling, or improper cleaning.

    Whitepaper addressing filter selection and PRESHIFT

     

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