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Cylindrical black adapter with wide 65mm aperture and thin 2mm profile

Baader Planetarium

Baader Planetarium UFC Straylight-Flange Adapter 65mm aperture 2mm optical length

SKU CH-P0CD-2R0SM

A 65 mm clear-aperture flange adapter adds only 2 mm optical length for stray-light-free camera mounting

  • Maximises compatibility with UFC base, stray light shield and camera lenses
  • 65 mm clear aperture gathers more light for brighter astrophotography images
  • Adds only 2 mm optical length, preserving focal plane and image quality
  • 89 mm outer diameter gives a stable, secure connection for heavy gear
  • Stray light shield reduces unwanted light when mounting UFC in front of camera lenses

65mm aperture stray-light flange adapter

The Baader Planetarium UFC Straylight-Flange Adapter connects UFC system components to camera lenses with a clear 65mm aperture. It is designed for astrophotographers who need to suppress stray light while keeping the optical path short. The adapter adds only 2mm of optical length, so focus position is virtually unchanged.

Behaviour under sustained imaging sessions

The 89mm outer diameter provides a rigid mechanical interface that resists flexure during long exposures. Minimal optical thickness prevents vignetting even when the imaging train is extended. Stray-light shielding maintains contrast across the full field without introducing thermal gradients that could affect sensor stability.

Installation notes and common pitfalls

The adapter threads directly onto the UFC base and accepts the included mounting plate screws for lens attachment. Ensure all mating surfaces are clean before assembly to avoid light leaks. The 2mm optical length leaves no room for additional spacers, so verify back-focus requirements of the specific camera lens before committing to the configuration.

Highlights

  • Maximises compatibility with UFC base, stray light shield and camera lenses
  • 65 mm clear aperture gathers more light for brighter astrophotography images
  • Adds only 2 mm optical length, preserving focal plane and image quality
  • 89 mm outer diameter gives a stable, secure connection for heavy gear
  • Stray light shield reduces unwanted light when mounting UFC in front of camera lenses

Specifications

No published specifications for this item yet.

Questions about this item

Does the 65 mm aperture add noticeable heat or power draw during long imaging sessions?

The adapter is a passive mechanical component with no electronics, so it generates no heat and draws no power regardless of how long it is used.

What existing equipment is required for the 89 mm flange to connect properly?

You need a Baader UFC base and the matching stray-light shield; the included screws and mounting plate then secure the adapter to that base.

Will the 2 mm optical length shift focus on my older telescope?

The 2 mm (0.08 in) added length is negligible and preserves the existing focal plane, so focus on older scopes remains effectively unchanged.

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