Antlia Quad Band Anti-Light Pollution Filter

CHF 209

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Antlia Quad Band Anti-Light Pollution filter

The Antlia Quad Band Anti-Light Pollution filter is designed to effectively reduce light pollution while capturing a wide range of deep-sky objects, including galaxies, reflection nebulae, emission nebulae and star clusters. It works with both color (OSC) and monochrome cameras, and is compatible with high-speed optics up to f/2.

Key features

  • Targeted elimination of polluting lights (high-pressure sodium and blue LEDs)
  • Capture over 95% of deep-sky objects
  • Simultaneous transmission of Ha, SII, OIII, H-Beta and NII lines
  • High transmission (>92%) at all major emission wavelengths
  • Near infrared (NIR) transmission to detect signals inaccessible to other filters
  • Compatible with ultra-fast lenses up to f/2 without significant loss of performance
  • Natural color balance for easy post-processing
  • One-piece, unglued optical substrate
  • Optical surface quality S/D 60/40 (MIL-O-13830)
  • Transmitted wavefront: λ/4 or better
  • Parallelism: less than 30 arcsec

Spectral Specifications

  • H-alpha: 656.3nm (>92%)
  • SII: 671.6nm and 673.1nm (>92%)
  • OIII: 495.9nm and 500.7nm (>92%)
  • H-Beta: 486.1nm (>92%)
  • NII: 654.8nm and 658.3nm (92%)
  • Out-of-band blocking: ≥OD4 from 300 to 1050nm
  • Filter thickness: 2mm ± 0.05mm

Filter design

  • Ultra-thin cell for reduced vignetting
  • Standard Antlia ring: 1.25″ (M28.5×0.6) and 2″ (M48x0.75)
  • Durable black anodized finish
  • Resistant laser engraving (non-fading)

Ideal applications

  • Astrophotography of galaxies, emission and reflection nebulae, star clusters
  • Use from heavily polluted skies (Bortle 8) to clean skies (Bortle 1)
  • Optimized for cameras with AR glass, to capture both visible and near-IR images

Recommended use

  • Compatible with OSC color and monochrome cameras
  • Ideal for cameras without internal UV/IR cut (AR glass)

Not recommended

  • Solar imaging
  • Visual observation at night

Safety warnings

  • DO NOT use to observe the Sun directly.
  • Serious eye damage may result from improper use.

 

Filter selection2" Mounted, 36mm Unmounted

Why choose Deep Space Astronomy?

Because astronomy is our passion! Our team of experts is here to guide you in your choice of equipment, from beginner telescopes to the most sophisticated astrophotography equipment.

  • Personalized advice: Take advantage of our expertise to choose the ideal instrument for your needs and budget.
  • A wide choice of products: We offer a rigorous selection of quality equipment from the leading brands on the market.
  • Customized training: Expand your knowledge of astronomy with our online and face-to-face training courses.
  • Responsive after-sales service: We're here to help you make the most of your experience.

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