Pentax XW16.5 Eyepiece for Astronomical Telescopes

Brand: Pentax

SKU : PE-XW16.5

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  • The widest viewing angle, of 85°, in the XW series
  • Suitable for observing nebulae and star clusters
  • New optical system with 7 elements in 5 groups that surpasses the performance of the conventional XW series
  • Cannot be used underwater

Product Details

  • Ricoh Imaging is pleased to announce the launch of two high-performance eyepieces for astronomical telescopes. The new smc PENTAX XW16.5 and smc PENTAX XW23 deliver an apparent field of view of 85°. The widest viewing angle in the XW series, suitable for observing nebulae and star clusters.

    The new eyepieces feature a new optical system with 7 elements in 5 groups that surpasses the performance of the conventional XW series to obtain sharp star images all the way to the edge of the field of view. Like all XW eyepieces, the new additions incorporate multi-layer coating for outstanding light transmission efficiency, advanced light-shielding technology for improved image contrast and weather resistant construction.

    Note: while the XW series features a weather resistant structure of JIS class 4, they cannot be used underwater.

  • specifications

    Eye Relief20mm
    Eyepiece Diameter76mm
    Eyepiece Length142mm
    Eyepiece TypeWide Angle
    Eyepiece Weight1.64lbs
    Field of View85 Degrees
    Focal Length16.5mm
    Number of Elements7
    Size2"
  • included items

    • XW16.5 eyepiece
    • Eyepiece lens cap
    • Objective lens cap

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