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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
Askar 107PHQ f/7 Quadruplet APO

Askar 107PHQ f/7 Quadruplet APO

by Askar
SKU ASK-107PHQ
$2,299.00 - $2,299.00
$2,299.00
$2,299.00 - $2,299.00
$2,299.00
Price Match Policy!
  • 107mm Quadruplet APO Optical Design
  • 749mm Focal Length at f/7
  • 44mm Corrected Image Circle for Full-Frame Sensors
  • Integrated Field Flattener for Simplified Imaging
  • 6.9kg Total Weight with Rings and Plate
1 in stock
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Askar 107PHQ f/7 Quadruplet APO Astrograph

    The Askar 107PHQ f/7 Quadruplet APO Astrograph integrates a field flattener directly into its 107mm quadruplet optical design, delivering a perfectly flat 44mm image circle without the need for complex accessories. Its 749mm focal length resolves fine detail in distant galaxies, while the air-spaced objective with two ED glass elements ensures superb color correction from edge to edge. At a total weight of just 6.9kg including its 300mm Vixen dovetail, the 107PHQ is a complete, grab-and-go imaging platform for full-frame sensors.

    A 44mm Flat Field with Zero Back-Focus Hassle

    The core of the 107PHQ is its Petzval-like quadruplet design, which places a correcting lens group permanently within the optical tube. This eliminates the single most common point of failure in astrophotography setups: calculating and setting the correct back-focus distance. With the 107PHQ, you simply attach your camera using the included adapters, achieve focus, and the entire 44mm image circle is corrected, ensuring pinpoint stars across a full-frame sensor without any guesswork.

    f/7 Imaging at 749mm for Full-Frame Sensors

    The 749mm focal length and f/7 ratio provide an ideal image scale for a vast range of deep-sky objects, from the spiral arms of the Andromeda Galaxy (M31) to the turbulent structures within the Orion Nebula (M42). The two ED glass elements in the objective lens suppress chromatic aberration, rendering stars as sharp, color-pure points. This optical system is engineered to deliver high-contrast images that retain fine detail, even when using modern high-resolution astronomy cameras.

    A 6.9kg Imaging Platform with 300mm Vixen Plate

    Engineered for stability, the Askar 107PHQ weighs 5.7kg as an OTA and 6.9kg fully equipped with its included tube rings, handle, and 300mm Vixen-style dovetail plate. This manageable weight makes it compatible with a wide range of mid-sized equatorial mounts. The retractable dew shield allows the scope to shrink to a compact 603mm for transport, extending to 754mm to block stray light and prevent dew formation during long imaging sessions.

    Versatile Connectivity from M86 to M48

    The 107PHQ includes a comprehensive set of four adapters to connect virtually any imaging device. The focuser terminates in a native M86×1 thread, which can be stepped down using the included rings to M68×1, M54×0.75, M52×0.75, and finally to the universal M48×0.75 thread used by most T-rings and dedicated astronomy cameras. The final M48 adapter is also threaded to accept standard 2-inch filters.

    Askar 107PHQ vs. Triplet + Flattener: The Integrated Advantage

    An imager considering a traditional 100-110mm APO triplet must also purchase a separate, matched field flattener. This introduces complexity, potential for tilt, and critical back-focus spacing requirements that can change with filters or other accessories.

    • Competitor's Advantage: A triplet with a separate flattener/reducer offers more flexibility in focal length. You can image at the native focal length or a reduced, faster focal ratio.
    • Askar 107PHQ's Advantage: The 107PHQ offers perfect, factory-set field correction out of the box. There is zero chance of spacing errors, and the rigid, integrated design minimizes potential tilt, resulting in a more reliable and frustration-free imaging experience, especially for those new to the hobby.

  • What does the "PHQ" in Askar 107PHQ mean for my astrophotography?

    The "PHQ" signifies a quadruplet Petzval-style optical design with a built-in field flattener. This means you do not need to buy a separate flattener or worry about calculating back-focus distance. You simply attach your camera and the entire 44mm image circle is corrected for sharp, flat-field images.

    Can the Askar 107PHQ fully illuminate my full-frame camera sensor?

    Yes. The Askar 107PHQ is designed with a corrected 44mm image circle, which is large enough to cover standard full-frame sensors (typically 43.3mm diagonal) without vignetting or distorted stars at the corners.

    How will the Askar 107PHQ perform on a target like the Triangulum Galaxy (M33)?

    The 749mm focal length of the Askar 107PHQ is an excellent match for large galaxies like M33. Paired with a full-frame or APS-C camera, it will frame the galaxy beautifully, with enough image scale to resolve individual HII regions and the delicate spiral arm structure.

    What kind of mount do I need for the 6.9kg Askar 107PHQ?

    With a total weight of 6.9kg (15.2 lbs) including rings and the dovetail plate, the Askar 107PHQ works well on equatorial mounts with a payload capacity of 30 lbs (13.6 kg) or more. This ensures stable tracking for long-exposure astrophotography. Examples include the Sky-Watcher EQ6-R Pro or Celestron AVX.

    Is the Askar 107PHQ suitable for visual observation of planets like Jupiter?

    Absolutely. While designed as an astrograph, its APO quadruplet optics provide sharp, high-contrast, and color-free views visually. With a 749mm focal length, you can use high-magnification eyepieces to easily observe the cloud bands of Jupiter, the rings of Saturn, and details on the Moon.

    What adapters do I need to connect my DSLR to the Askar 107PHQ?

    The Askar 107PHQ includes a set of adapters that terminates in a standard M48x0.75 male thread. All you need to add is an M48 T-ring specific to your camera brand (e.g., Canon, Nikon, Sony) to connect your DSLR or mirrorless camera directly to the telescope.

  • Aperture 107mm
    Focal Length 749mm
    Focal Ratio f/7
    Objective Lens Quadruplet air-spaced APO (with two ED glass)
    Image Circle 44mm
    Total Length 603mm (dew shield contracted), 754mm (dew shield extended)
    OTA Weight 5.7kg
    Total Weight 6.9kg (Including tube rings & dovetail plate)
    Rear-End Thread Adapters M86×1 to M68×1, M68×1 to M54×0.75, M54×0.75 to M52×0.75, M52×0.75 to M48×0.75
    Final Adapter Thread M48×0.75 (with M48 filter thread)
    Included Adapters Four-piece photographic adapter set
    Package Contents A 107PHQ OTA, a pair of tube rings, a handle, an Askar 300mm Vixen dovetail plate, a set of four-piece photographic adapters, a manual

    • Askar 107PHQ OTA

      × 1

    • Tube Rings

      × 1 Pair

    • Carry Handle

      × 1

    • 300mm Vixen-Style Dovetail Plate

      × 1

    • Four-Piece Photographic Adapter Set

      × 1

    • Instruction Manual

      × 1

  • Askar 1-Year Warranty