Telescope O-III Oxygen Narrowband Filter 1.25 inch Filter (20194)

The Telescope O-III Narrowband Filter is a must-have tool for avid astronomers, enabling detailed and high-contrast views of nebulae and other faint deep-sky objects, particularly under optimal conditions and with larger aperture telescopes.

Key Features

• Specialised Design:

  • Designed specifically for observing gas and planetary nebulae.

• Enhanced Contrast:

  • Isolates and enhances the visibility of faint supernova remnants and planetary remnants by distinguishing contrasts in specific light wavelengths.

• Narrow Band-Pass Precision:

  • Filters light to isolate two doubly ionized oxygen emission lines (496nm and 501nm), ideal for deep-sky observation.

• Optimised for Larger Telescopes:

  • Best suited for telescopes with apertures of 200mm or larger, providing enhanced identification of nebulae objects.

• Astounding Visuals:

  • Delivers near-photographic clarity for celestial objects like the Veil, Ring, Dumbbell, and Orion Nebulae under dark sky conditions.

• Durable Construction:

  • Supplied with a protective storage case for safe handling and transport.

Specifications

• Type: O-III Narrowband Filter
• Filter Size: 1.25 inches
• Wavelengths Isolated: 496nm and 501nm
• Material: High-grade optical glass