Alpine Astronomical Baader 8.5nm Oxygen-III Enforced-Narrowband CCD Imaging Filter (1.25" Eyepiece Filter)

Alpine Astronomical Baader 8.5nm Oxygen-III Enforced-Narrowband CCD Imaging Filter (1.25" Eyepiece Filter)

Alpine Astronomical Baader 8.5nm Oxygen-III Enforced-Narrowband CCD Imaging Filter (1.25" Eyepiece Filter)

B&H # ALFOIIIN1 MFR # FOIIIN-1
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Expected availability: 7-14 business days

Product Highlights

  • Deep-Sky Astrophotography and Imaging
  • Ideal for Wispy Planetary Nebulae
  • NOT Safe for Solar Viewing or Imaging
  • For f/10 to f/2.8 Optical Systems
  • No Halos, Reflections, or Ghosting
  • Dielectrically Anti-Reflection Coated
  • Planeoptically Precision Polished
  • IR Blocked
  • 1.25" Eyepiece Filter Frame
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  • 1Description

Centered on the 511nm wavelength and passing the narrow 8.5nm bandwidth, the Alpine Astronomical Baader 8.5nm Oxygen-III Enforced-Narrowband CCD Imaging Filter is ideally suited for use with full-frame CCD imaging sensors on optical systems, including telescopes of all configurations and apertures, ranging from a super-fast f/2.8 to a more moderate f/10. By passing just the narrow O-III band and excluding all others, this filter improves the contrast of faint and wispy planetary nebulae against the stark black backdrop of space.

Individually planeoptically polished, dielectric anti-reflection coated, and IR blocked, the filter uniformly passes the maximum amount of bandwidth possible to virtually eliminate halos, reflections, and ghosting. It is offered here mounted in an aluminum frame that has been threaded to fit standard 1.25" eyepieces and accessories for projection and afocal imaging techniques. It is ideal for long-exposure CCD imaging to produce composite photos when stacked and matted with multiple exposures using multiple band filters.

This filter is intended only for deep-sky astroimaging with CCD systems, and should never be used for direct solar viewing or solar photography as permanent injury to your eye and equipment can occur, up to and including blindness.

In the Box
Alpine Astronomical Baader 8.5nm Oxygen-III Enforced-Narrowband CCD Imaging Filter (1.25" Eyepiece Filter)
  • Limited 2-Year Warranty
  • Table of Contents
    • 1Description
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