AG Optical 10" iDK f/6.7 Imaging Dall Kirkham Telescope Deluxe Package

  • 50mm corrected image circle
  • Built-in dew heaters and sensors, which can only be controlled by the AG Optical Thermal Control System (sold separately)
  • Optec LEO focuser adapter included (LEO Focuser sold separately)
  • PLEASE NOTE: The required $250 crating fee is included in the telescope's cost. These telescopes are warehoused at the manufacturer. If listed IN STOCK, please allow an additional 1-3 business days for processing.
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  • Regular price $9,965.00

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AG Optical 10" iDK f/6.7 Imaging Dall Kirkham Telescope Deluxe Package

Optical Precision

The AG Optical Systems 0.25 meter (10-Inch) f/6.7 Imaging Dall Kirkham (iDK) telescope is an ultra-portable imaging instrument featuring a huge 50 mm flat field free of coma, astigmatism, and field curvature. The outstanding optical performance of the 10″ iDK is made possible through the convergence of careful design, state-of-the-art manufacturing, and precise assembly. Widefield images are captured with high-contrast details and sharp stars across the entire field of view.

AG Optical IDK 10 Galaxy

The AG Optical Systems f/6.7 iDK optical system provides exceptional thermal stability. Optical grade fused quartz optics ensure the figure and focus stability of the 10″ iDK as the temperature changes over the course of an imaging session. When combined with the rigid, thermally stable carbon fiber truss tube assembly of the 10-inch iDK you can expect to spend less time focusing and more time collecting data.

Innovative Craft

The 10 Inch iDK carbon fiber truss optical tube assembly makes extensive use of carbon fiber composite materials, CNC-machined components, and precision collimation adjustments to provide a rigid and thermally stable platform for the low expansion optics. Three cooling fans speed the cooling of the primary mirror while primary and secondary mirror heaters can be automatically controlled by the optional Thermal Control System (TCS, sold separately).

The Imaging Dall Kirkham (iDK) Series is a premium line of f/6.7 wide-field quartz optics astrographs designed to provide a highly-corrected field of view for serious CCD imaging. The outstanding performance of the iDK Series is made possible through the convergence of modern design, careful selection of materials (quartz optics), state-of-the-art manufacturing, and precise assembly. iDK systems are in use around the world producing stunning images of our Universe.

AG Optical IDK 10 Close Up

A permanently aligned integral field corrector eliminates coma, astigmatism, and field curvature across a flat field of view up to 50 mm in diameter. When combined with the extensive use of carbon fiber, CNC-machined components, and optical grade fused quartz optics, an iDK Series astrograph is a potent, versatile imaging telescope capable of serious scientific and astroimaging performance.

Versatile Design

The Imaging Dall Kirkham series of imaging telescopes offer a very versatile f/6.7 focal ratio. This focal ratio provides a generous field of view to capture thousands of imaging objects while offering the image scale to frame moderate to small size objects nicely on your CCD sensor.

Dollar for dollar AG Optical Systems is the leader in high-performance imaging systems. Backed by outstanding customer support our astrographs have features that cost extra or are not even available in competing systems, For example, in addition to providing primary mirror and secondary mirror collimation adjustments, every iDK has a precision CNC machined tip/tilt focuser base to allow small amounts of tilt in an imaging train to be zeroed out. Quartz optics figured by master opticians offer outstanding optical performance that you can rely on night after night.

The optional, robust, digital Optec Gemini rotating focuser, Optec TCF-S3i, or Optec Leo are ASCOM-compatible focusers capable of precision focusing and rotation while carrying heavy CCD imaging trains.

Optical Back Focus: 

  • 6.9″ of back focus from Optec Gemini rotating focuser (assumes 1″ extension tube between back-plate and Gemini focuser)
  • 6.05″ with Optec TCF-S3i

    See what goes into making one of these scopes below:


    Aperture251 mm (10")
    Back Focus263mm
    Camera/Eyepiece ConnectionMale Optec—4300 Dovetail
    Corrected Image Circle50mm
    Dawes Limit0.46 arcseconds
    Focal Length1674 mm
    Focal Ratiof/6.7
    Glass TypeQuartz
    Highest Magnification502x
    Light Gathering Power1286x
    Limiting Magnitude15.7
    Optical DesignImaging Dall Kirkham
    RMS Spot Size6 microns
    Secondary Obstruction142mm
    Tube Length640mm
    Tube Weight32 lbs


    • 10-Inch Carbon fiber optical truss tube assembly
    • Adapter for Optec LEO Focuser
    • Losmandy “D” mount dovetail
    • Primary and secondary dust covers
    • Primary mirror cooling fans with power cable
    • Dew heaters and sensors (controller sold separately)
    • Low expansion substrate optics with enhanced aluminum coatings
    • All stainless steel fasteners and springs
    • Back-plate carrying handles