William Optics GT153 f/7.8 Triplet Refracting Telescope

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  • Regular price $5,998.00
  • William Optics GT153 f/7.8 Triplet Refracting Telescope

    • Sale
    • Regular price $5,998.00
    • ITEM #

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    William Optics GT153 f/7.8 Triplet Refracting Telescope

    Introducing ALL NEW GT153 full-frame imaging APO!

    You will be blown away by the small details you can observe through this APO 153mm; fine details of DSOs, stunning resolution both visually or during astrophotography.

    Until yesterday this was only a dream at this price!

    Key Features

    Stunning Optics

    • Features a top-quality triplet air-spaced objective.
    • This scope is extremely sharp and has a great color correction which is ideal for astrophotography.
    • Precision optics with STM coatings.
    • Designed by a leading designer with FPL-53 glass.

    3.5: FeatherTouch R&P Focuser

    Beautiful Finish

    •  Large 3.5” Feather Touch Focuser:  a treat to use during astrophotography. No image shifting!
    • 360 deg. rotatable.
    • Extra-heavy-duty.
    • Large aluminum knobs.

    Ideal For Astrophotos

    • Have you always dreamed of taking those beautiful pictures of the heavens? Now is the time!! Few other refractors in this size have two DEDICATED Field Flattener and a reducer/flattener available.

    • Graduated scale for precise camera alignment.

    Do-All Telescope

    • The 153mm objective is a great size for both wide-field and planetary observations.
    • The apochromatic performance makes it ideal for imaging.
    • This size will require a suitable mount in order to do astro imaging.

    Beautiful Finish

    • No plastic part used: CNC machined out of solid high-grade aluminum.
    • Pure William Optics quality fit and finish With a powder-painted white CNC-machined aluminum tube, retractable dew shield, anodized 360-degree rotatable FT focuser, engraved dew-shield Bahtinov cap (patented).

    Attention to Detail

    • Highly precise CNC machined lens cell.
    • Solid CNC-machined mounting rings with carrying Handel /guiding rings included in the price.
    • Triple testing each lens by Zygo test to ensure the best optical quality (we provide test report at an additional $150).

    Total Quality Package

    • Mounting rings, guiding rings, large Losmandy type dovetail, CNC handle, Bahtinov cap and 3”Rotolock adapter are included.
    • Total OTA weight including mounting rings just 13.5kg (29.5lb).
    • New Triplet APO X0.72 Full frame Field flattener reducer also Available From F7.8 cut down to F5.6 only.


    Aperture153 mm (6.02")
    Camera/Eyepiece Connection2"
    Camera/Eyepiece Connection4&3/32"x24 TPI
    Center RMS Spot Size5.2 microns
    Dawes Limit0.76 arcseconds
    Edge RMS Spot Size25.4 microns
    Focal Length1194 mm
    Focal Ratiof/7.8
    Free ShippingYes
    Glass Type53
    Hightest Magnification306x
    Light Gathering Power478x
    Limiting Magnitude14.7
    ManufacturerWilliam Optics
    Optical DesignTriplet

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