ZWO 1.25" SII 7nm Narrowband Filter

ZWO 1.25" SII 7nm Narrowband Filter

ZWO 1.25" SII 7nm Narrowband Filter

ZWO

Use with H-alpha and OIII narrowband filters (SHO Set) for astrophotography.  Also suitable for visual observation of most emission nebulae, planetary nebulae and supernova remnants. 

€199.00

Available Upon Request

Available Upon Request

This includes products that we do not keep in stock but are only available upon request or have been announced in advance by the manufacturer. These items are usually shipped within 5-14 days. Once we receive your order, we will notify you by e-mail or telephone of the exact delivery time, as well as the amount of any deposit that will be required.

Availability: In stock
SKU
ZWO-SII7nm1.25


ZWO 1.25" SII 7nm Narrowband Filter


The ZWO narrowband S-II filter passes light at 672nm wavelength with a bandpass of 7nm.

Use with H-alpha and OIII narrowband filters (SHO Set) for astrophotography. 

Also suitable for visual observation of most emission nebulae, planetary nebulae and supernova remnants. 

  • FWHM: 7 ±0.5nm
  • Glass Thickness 2.0+/-0.03 mm (1.25”)
  • Fine optically polished glass ensures accurate 1/4 wavefront over both surfaces
  • About 90% transmission at SII line 672nm
  • Infrared wavelength 700-1100nm cut-off
  • <0.1% transmission of off-band, OD3 (Optical Density)
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