USED - Oiii 4nm Narrowband filter 36mm unmounted

USED GEAR INFORMATION

This filter is in excellent condition. It does not appear to have any defects. They have been inspected, cleaned, and repackaged.

This new generation of Baader CMOS filters features:

CMOS-optimized Baader Filters

• Increased contrast
• Ever narrower passbands
• Reflex-Blocker ^™ coatings , for greatest 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)
• Life-Coat™ : evermore hard coatings to enable a non-aging coating for life – even in the most adverse environment

Baader O-III 36mm ultra-narrowband filter (4nm) – CMOS-optimized

Product Details

• SKU

  2961402

• EAN Code

  4047825047779

• Manufacturer

  Baader Planetarium

• Net weight (kg)

  0.00

Optical Specifications

• AR coating

  Reflex-Blocker™ hard coated

  plane-optically polished

• CWL (Central Wavelength)

  500.7 nm

• HBW (Halfbandwidth)

  4 nm

• Suitable for f/ratio

  > f/3.4

• Transmission Range

  O-III

• Type of Filter

  Ultra-Narrowband

Mechanical Specifications

• Filter mounted

  Unmounted

• Filter shape

  round

• Filter size

  36 mm

• Filter Thickness (without cell)

  2 mm

Usage & Features

• Filter Usage

  CMOS

  CCD

  O-III

• Single or Set

  Single Filter

• Special Features

  CMOS optimized with Life-Coat™