OIII 5nm Narrowband Telescope Filter for Deep Space Imaging

Reveal stunning detail in nebulae and galaxies with this OIII 5nm narrowband telescope filter. Designed for deep-space astrophotography, it enhances the visibility of faint structures by isolating oxygen-III emission lines for crisp, high-contrast images.

Key Features

• OIII 5nm narrowband filter isolates oxygen emission wavelengths for sharper, more detailed images

• 90% peak light transmission for bright, high-contrast results

• Blocks unwanted city light and atmospheric interference for cleaner exposures

• Ideal for capturing emission nebulae, planetary nebulae, and supernova remnants

• Precision-ground optical glass with 60/40 surface quality for superior image clarity

• Compatible with any telescope eyepiece or imaging device using standard M48x0.75 thread

Specifications

• Type: OIII Narrowband filter

• Size: 2 inch (50.8mm)

• Bandwidth (FWHM): 5nm

• Peak Transmission: ≥90%

• Blocking: ≥OD5

• Thread: M48x0.75 single thread

• Clear Aperture: 44mm

• Thickness: 1.85mm

• Wavelength Range: 300–1000nm

Package Contents

• 1 x OIII 5nm Filter

• 1 x Material Plastic Box

What Makes This a Smart Buy:
Delivering brilliant oxygen-emission detail with minimal light pollution, this filter is a must-have for astrophotographers wanting rich, contrast-filled images of deep-space nebulae.