ZWO 31mm Ha 7nm Unmounted Narrowband Filter

ZWO 31mm Ha 7nm Unmounted Narrowband Filter
  Zoom
£139.00

:  

In stock - Shipped 1-2 working days.

Model:  zwo_ha_31-7nm
Part Number:  ZWO-Ha7nmD31
Brand:  ZWO

ZWO


New & Improved with higher light transmission and less reflection (reduced halos around bright stars). 

The ZWO H-Alpha filter has a bandpass of  7nm and passes light at 656nm wavelength. Light transmission peaks at around 90%. 

Providers high-contrast images with rich detail of nebula, even in areas with strong light pollution! 

FEATURES

  • FWHM: 7±0.5nm
  • Glass Thickness 2.0+/-0.03 mm (1.25”/31mm/36mm)
  • Fine optically polished glass ensures accurate 1/4 wavefront over both surfaces
  • Around 90% transmission at H-alpha line 656nm
  • Infrared wavelength 700-1100nm cut-off
  • <0.1% transmission of off-band, OD3 (Optical Density)

Transmission Curve

There are currently no specifications available for this product.

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June 2018 / View Older
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