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All-Star Telescope is your source for all things astro from telescopes to astrophotography cameras. Have a question? We'd love to help. Email: info@all-startelescope.com Call Us: (587) 336-6621 Toll Free: 1 (866) 310-8844
Have a question? We'd love to help. Email: info@all-startelescope.com Call Us: (587) 336-6621 Toll Free: 1 (866) 310-8844

ZWO 31mm SII 7nm Filter Unmounted (ZWO-SII7NMD31)

by ZWO
SKU ZWO-SII7NMD31
Original price $193.70 - Original price $193.70
Original price
$193.70
$193.70 - $193.70
Current price $193.70

Product is not in stock at the moment but we expect it to arrive soon.

New stock is arriving all the time. We will let you know an estimated timeline for when your reserved item will arrive.

Narrowband filter do not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula.

Description

The ZWO narrowband S-II 7nm filter passes light at 672nm wavelength with a bandpass of 7nm which is designed for nebula observation . It is suitable for visual observation on most emission nebulae, planetary nebulae and supernova remnants, use it with H-alpha and OIII narrowband filters (SHO Set) for tricolour CCD astrophotography.

It can reduce the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapour, and both high and low pressure sodium vapour lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).

Specifications

  • Name: ZWO narrowband 31mm filter
  • Size: D=31mm
  • Thickness: 2mm