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Tele Vue Delos 24mm 72° Eyepiece - 2"
Tele Vue Delos 24mm 72° Eyepiece - 2"

Tele Vue Delos 24mm 72° Eyepiece - 2"

par TeleVue
UGC TV-EDL-24.0
CA$771.00 - CA$771.00
CA$771.00
CA$771.00 - CA$771.00
CA$771.00
Égalisation de prix!
  • 24mm Focal Length
  • 72° Apparent Field of View
  • 2" Diameter Barrel
  • 20mm Eye Relief
  • 28.5mm Field Stop
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  • Description
  • FAQ
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  • Tele Vue 24mm Delos Eyepiece - 2"

    The Tele Vue 24mm Delos is a high-contrast, mid-power optic designed to deliver a 72° apparent field of view with a constant 20mm of eye relief. Unlike most of the Delos line, this specific focal length utilizes a 2-inch barrel format to accommodate its internal lens geometry while maintaining mechanical stability. In an f/8 refractor, it produces a 3mm exit pupil, providing a balanced background for observing deep-sky targets like the Hercules Cluster (M13).

    Optical Fidelity and Field Correction

    By employing high-index glass and specialized anti-reflection coatings, the 24mm Delos minimizes lateral color and maintains sharp star images across the entire 72° field. The design is optimized for fast focal ratio telescopes, ensuring minimal astigmatism even at the edge of the field stop.

    • Stray Light Control: Precision internal baffling and blackened lens edges reduce ghosting when observing bright objects near the field edge, such as the Moon or Albireo.
    • Exit Pupil Management: The 24mm focal length provides a 4.8mm exit pupil in f/5 systems, maximizing light throughput for large emission nebulae like the North American Nebula (NGC 7000).

    Adjustable Mechanical Interface

    The eyepiece features a sliding, lockable eyeguard housing that allows the observer to set the eye distance precisely. This mechanism is critical for managing the 20mm eye relief and preventing the "blackouts" associated with incorrect eye placement.

    • Long Eye Relief: The 20mm spec allows observers with eyeglasses to view the full 72° field without contact between the lens and frames.
    • Dioptrx Integration: The top housing is compatible with the Tele Vue Dioptrx astigmatism corrector, allowing for sharp views without wearing glasses.

    Operational Comparison

    Selecting the 24mm Delos involves balancing barrel size requirements and eye relief preferences within the Tele Vue ecosystem.

    • vs. 24mm Panoptic: The 24mm Delos requires a 2-inch diagonal or focuser, whereas the Panoptic fits 1.25-inch holders; however, the Delos offers 5mm more eye relief and a wider 72° apparent field.
    • vs. 22mm Nagler Type 4: The Delos provides 20mm of eye relief and a more neutral color balance compared to the 82° Nagler, which features 19mm of relief and a slightly warmer tone.

  • Why is the Tele Vue 24mm Delos a 2-inch eyepiece while others are 1.25-inch?

    To maintain a constant 20mm eye relief and 72° apparent field at this focal length, the Tele Vue 24mm Delos requires larger internal lens elements. This necessitated a 2-inch barrel to avoid vignetting and maintain structural integrity.

    Will the Tele Vue 24mm Delos work in a 1.25-inch diagonal?

    No, the Tele Vue 24mm Delos features a dedicated 2-inch barrel. You must use a 2-inch diagonal or a telescope with a 2-inch focuser to utilize this eyepiece.

    Is the 24mm Delos suitable for planetary observing?

    Yes, its high contrast and color neutrality make the Tele Vue 24mm Delos excellent for medium-magnification planetary views, particularly in long focal length telescopes like SCTs where it helps frame the planet alongside its moons.

  • Model # EDL-24.0
    Focal Length 24 mm
    Barrel Size 2"
    Apparent Field of View 72°
    Eye Relief 20 mm
    Field Stop Diameter 28.5 mm
    Weight 1.1 lb (499 g)
    • Tele Vue 24mm Delos Eyepiece

      24mm Delos Eyepiece (2")

      × 1

    • Tele Vue 2-inch Dust Cap

      Dust Cap Set

      × 1

  • Tele Vue 5-Year Limited Warranty