UHC Pro Antlia contrast enhancement filter

Antlia 8-EL UHC Pro Visual Enhancer filter

The Antlia 8-EL UHC Pro Visual Enhancer filter is designed for advanced visual observation of celestial objects. It is ideal for combating moderate light pollution while maintaining excellent color balance, perfect for observing emission nebulae, planetary nebulae and other celestial targets.

Key features

• 95% peak transmission on the main emission lines :
  • 486.1nm (H-beta)
  • 495.9nm (OIII)
  • 500.7nm (OIII)
  • 654.8nm (NII)
  • 658.3nm (NII)
  • 656.3nm (H-alpha)
  • 671.6nm (SII)
  • 673.1nm (SII)
• Selective sodium light suppression for enhanced contrast
• Ultra-thin structure minimizes vignetting and maximizes usable aperture
• Black anodized finish with durable laser engraving
• Designed exclusively for visual observation (not recommended for solar imaging)

Recommendations for use

• Use with large-diameter telescopes (≥8 inches) to compensate for reduced luminous flux due to filtering
• Significantly improves perception of fine structures in emission and planetary nebulae

Suggested targets by emission line

• H-beta (486.1nm): M42 (Orion), NGC7000 (North America), M16 (Eagle), M8 (Lagoon)
• OIII (495.9nm, 500.7nm): M57 (Ring), NGC6960 (Veil), NGC6543 (Cat's Eye), NGC6302 (Butterfly)
• NII (654.8nm, 658.3nm): M1 (Crab), M57 (Ring), NGC6960 (Veil)
• H-alpha (656.3nm): M42 (Orion), IC434 (Horsehead), NGC7000 (North America), M16 (Eagle), M8 (Lagoon)
• SII (671.6nm, 673.1nm): M1 (Crab), M42 (Orion), NGC6543 (Cat's Eye), IC443 (Medusa), M27 (Dumbbell)

Technical specifications

• Size available: 2″ mounted (M48x0.75)
• Ultra-thin cell for maximum field of view
• Peak transmission: 95% on main lines
• Effective suppression of artificial light (light pollution)
• Finish: Black anodized with unalterable laser engraving

Not recommended

• Solar imaging

Safety warning

• DO NOT use this filter to observe the Sun directly.
• Incorrect use may result in serious eye damage.

Warranty

• 3-year warranty against delamination