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  • 0.77x Reducer/Flattener for Esprit 120

    Sky-Watcher
    $440.00

    34mm fully illuminated field but can handle full frame as well 95mm back-focus (55mm when back focus spacer and M48 ring installed) Drops f/ratio...

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    $440.00
  • 0.77x Reducer/Flattener for Esprit 150

    Sky-Watcher
    $380.00

    36mm fully illuminated field, compatible with both APS-C and full frame sensors 90mm back-focus (55mm when back focus spacer and M48 ring install...

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    $380.00
  • 1.25" Extension Tube

    Orion
    $21.99

    This anodized, machined aluminum 1.25" Orion Eyepiece Extension Tube provides extra focuser "back travel" sometimes needed to achieve focus with ce...

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    $21.99
  • 10mm Delos

    TeleVue
    $352.00

    Tele Vue is pleased to introduce the Delos, mid-to-short focal length line of 20mm eye-relief, 72° apparent field of view eyepieces. Every optical,...

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    $352.00
  • 10mm Ethos

    TeleVue
    $628.00

    The 10mm Ethos delivers: 100° apparent field (50% larger in area than 82° Naglers), comfortable eye-relief, (accepts DIOPTRX eyesight astigmatism c...

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    $628.00
  • 11-Inch Dovetail Bar (CGE)

    Celestron
    $42.95

    11-inch Dovetail bar (CGE)

    $42.95
  • 12mm 92° Long Eye Relief Eyepiece

    Explore Scientific
    $549.99

    Explore Ultra-Wide Eyepieces - Comfort, Quality, Value. The Explore Scientific 92° Series™ eyepieces are hyper-wide class oculars that can transfor...

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    $549.99
  • 12mm Delos

    TeleVue
    $352.00

    Tele Vue is pleased to introduce the Delos, mid-to-short focal length line of 20mm eye-relief, 72° apparent field of view eyepieces. Every optical,...

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    $352.00
  • 12mm Omni

    Celestron
    $34.95

    If you are looking to move up to a higher quality eyepiece the Omni series provides more enhanced features in a wider selection of focal lengths. C...

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    $34.95
  • 13mm Ethos

    TeleVue
    $628.00

    At the 2007 Northeast Astronomy Forum, Tele Vue once again broadened the amateur astronomer's perspective on the universe and introduced a new obse...

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    $628.00
  • 13mm Nagler - Type 6

    Tele Vue
    $321.00

    The 7-element, Nagler Type 6 design is based on the original patented Nagler design. This new 7-element design update for the short focal length Na...

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    $321.00
  • 14-Inch Dovetail Bar (CGE)

    Celestron
    $57.95

    Dovetail for mounting a Celestron 14" SCT to a Celestron CGE-style or Losmandy D-style saddle plate or for piggybacking a guidescope or camera.

    $57.95
  • 14mm 100° Series Argon-Purged

    Explore Scientific
    $549.99

    Nitrogen-Purged and Waterproof: Internally sealed and purged with inert, dry nitrogen gas to prevent internal fogging, to halt the intrusion of fin...

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    $549.99
  • 14mm 82° Series Argon-Purged

    Explore Scientific
    $199.99

    Using advanced computer design, combinations of low dispersion and high refractive index optical glasses, and durable multilayer deposition coating...

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    $199.99
  • 14mm Delos

    TeleVue
    $352.00

    Tele Vue is pleased to introduce the Delos, mid-to-short focal length line of 20mm eye-relief, 72° apparent field of view eyepieces. Every optical,...

    View full details
    $352.00
  • 15mm Omni

    Celestron
    $36.95

    If you are looking to move up to a higher quality eyepiece the Omni series provides more enhanced features in a wider selection of focal lengths. C...

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    $36.95
  • 16.5mm T-Spacer

    starizona
    $24.95

    Use this female T-thread to male T-thread spacer to extend standard T-thread adapters by 16.5mm.

    $24.95
  • 16mm 68° Series

    Explore Scientific
    $179.99

    16mm Focal Length 68° Apparent Field Argon-purged Waterproof EMD Coatings 1.25" Barrel

    $179.99
  • 16mm Nagler - Type 5

    Tele Vue
    $352.00

    This is a scaled down version of the "king of the field" 31mm Nagler Type 5.The new 16mm Nagler Type 5 is a smaller, lighter (0.45 lbs.), 1.25" onl...

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    $352.00
  • 17.3mm Delos

    TeleVue
    $352.00

    Tele Vue is pleased to introduce the Delos, mid-to-short focal length line of 20mm eye-relief, 72° apparent field of view eyepieces. Every optical,...

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    $352.00
  • 17mm 92° Long Eye Relief Eyepiece

    Explore Scientific
    $549.99

    Explore Ultra-Wide Eyepieces - Comfort, Quality, Value. The Explore Scientific 92° Series™ eyepieces are hyper-wide class oculars that can transfor...

    View full details
    $549.99
  • 17mm Ethos

    TeleVue
    $760.00

    The Televue 17mm Ethos Eyepiece provides a 100° apparent field for a true "spacewalk" view of the night sky. Distortion correction, high contrast a...

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    $760.00
  • 17mm Nagler - Type 4

    TeleVue
    $398.00

    The Nagler eyepiece represents the ultimate in the visual stargazing experience. With an 82-degree field of view, and tack-sharp, high-contrast opt...

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    $398.00
  • 18mm 82° Series Argon-Purged

    Explore Scientific
    $299.99

    Using advanced computer design, combinations of low dispersion and high refractive index optical glasses, and durable multilayer deposition coating...

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    $299.99