Baader Ultra-Narrowband 4.5nm SII CCD-Filter 1¼", LPFC-mounted - 2458429T (Discontinued)

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Baader PlanetariumSKU: 2458429T

Sale price$299 CAD Regular price$350 CAD
Only 1 unit left


This filter is discontinued - 1 left!


  • Premium grade S-III CCD-filter for fast optical systems f/8 to f/3
  • IR-blocked
  • NO halos, NO reflections, NO ghosting
  • non-ageing sealed coating edges

Note: Only while stocks last - this product is discontinued and is discounted.


The ongoing "CMOS-revolution" in astronomical imaging, with increasingly sensitive cameras and decreasing pixel sizes, forces us to bring our time-proven narrowband filters to a new technical level. Also in the future our filters will remain to be the reference-standard – with real measurement curves shown, covering the entire spectral sensitivity range of modern CMOS cameras, against which cheaper filter copies will have to measure themselves.


Additional Information

Manufacturer Baader Planetarium
SKU (#) 2458429T
Net weight (kg) 0.06
Colour Black
Transmission Range S-II
Filter Thickness (without cell) 2 mm
HBW (Halfbandwidth) 4,5nm
CWL (Central Wavelength) 673 nm
AR-Coating dielectrically coated, planeoptically polished
Filter size 1 25 inch
Filter Usage CCD, IR-Cut, S-II
Filter mounted Mounted (LPFC 6mm)
Type of Filter Narrowband
Single or Set? Single Filter
Filter shape round

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