OIII 6.5nm 1.25" Narrowband Filter
Extra Narrowband OIII-CCD 6.5nm filter is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 500nm through, which corresponds to OIII emission lines, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).
  • Description

  • Specification

1. Optolong OIII 6.5nm Narrowband Introduction

  • Suitable for visual observation on most emission nebulae, planetary nebulae and supernova remnants.
  • Hubble look of images can be made by the combination of H-alpha, OIII-CCD and SII-CCD, such as the famous “Pillars of Creation” (M16 Eagle Nebula).
  • 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.

 

2. Referance Spectrum

 

3. Packing

  • Outer Box: silve box
  • Plastic Box: PP material
  • Lining: imported high pressure white EVA material

4. Filter Performance

Photo by Fabian Rodriguez

 

5. Warm Reminder:

  • About Color: The package may different due to different photography environment, lighting. What you have seen in the picture is absolutely what it is being. You might feel somewhat of color different subject to the monitor and camera, please refer to the material item.
  • About Coating: The interference items will show rich colors in different light environment, which is normal phenomenon.
  • About Product Object: Product specifications may change to improve product quality, and that updates to the specifications will be published as soon as possible.
  • About Product Overview: Please note that H-Alpha 7nm filter with same design, same raw material . Size is the only difference.

 

Available Size:

  • 1.25";
  • 2";
  • 31mm;
  • 36mm;