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New narrowband 2-in filter set 7nm Ha, SII, OIII

ر.ع.284.700

SKU: ASC2082 Categories: ,

These new narrowband 2″ filters reduce the transmission of certain wavelengths of light, specifically those produced by artificial light.

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Weight0.2 kg
Dimensions7.5 × 7.5 × 6 cm

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  • FWHM:7±0.5nm
  • Fine-optically polished to ensure accurate 1/4 wavefront  over the both surfaces
  • About 90% transmission at H-alpha line 656nm (H-Alpha filter )
  • About 90% transmission at SII line 672nm (SII filter )
  • About 90% transmission at major OIII line 500nm (OIII filter )
  • Infrared wavelength 700-1100nm cut-off
  • <0.1% transmission of off-band, OD3(Optical Density)
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