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Askar 80PHQ f/7 Quadruplet APO

Askar 80PHQ f/7 Quadruplet APO

by Askar
SKU ASK-80PHQ
CA$2,099.00 - CA$2,099.00
CA$2,099.00
CA$2,099.00 - CA$2,099.00
CA$2,099.00
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  • 80mm Aperture
  • 600mm Focal Length (f/7.5)
  • Quadruplet APO Optics with 2 ED Elements
  • 44mm Full-Frame Image Circle
  • 3.9kg Optical Tube Weight
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Askar 80PHQ f/7.5 Quadruplet APO Astrograph

    The Askar 80PHQ f/7.5 Quadruplet APO astrograph integrates an 80mm objective and a 600mm focal length to deliver a perfectly flat 44mm image circle without an external corrector. This self-contained optical design includes two ED glass elements and weighs just 3.9kg as an optical tube assembly, or 4.7kg with its included rings and 300mm Vixen dovetail plate.

    Quadruplet APO Optics: A 44mm Flat Field at 600mm

    The 80PHQ's optical system is a 3+1 quadruplet design with two pieces of extra-low dispersion (ED) glass, engineered to eliminate chromatic aberration. Unlike standard telescopes that require a separate field flattener, the corrector element is built directly into the optical path, ensuring a 44mm image circle that is perfectly flat and corrected right out of the box. This design simplifies your imaging train and removes the need to calculate back focus; simply attach your camera using the included adapters for pinpoint stars across a full-frame sensor.

    With a 600mm focal length and an f/7.5 focal ratio, the Askar 80PHQ is optimized for capturing detailed views of medium-sized deep-sky objects. It provides the ideal image scale for resolving features in galaxies like the Triangulum Galaxy (M33) or framing intricate nebulae like the Dumbbell Nebula (M27).

    Imaging-Ready Mechanics: A 3.9kg OTA with a 3-inch Focuser

    Engineered for astrophotography, the 80PHQ is both robust and lightweight. The optical tube itself weighs only 3.9kg, and the total package with rings, handle, and Vixen plate comes in at a manageable 4.7kg. This low weight makes it an excellent match for a wide range of portable equatorial mounts without sacrificing stability.

    The instrument features a heavy-duty 3-inch dual-speed rack-and-pinion focuser capable of handling large cameras and filter wheels without flexure. A 360° rotator with a precision scale allows for effortless framing of your target, while the clamshell-style tube rings provide a secure grip that can be adjusted without tools.

    Askar 80PHQ vs. 107PHQ: The 4.7kg Portable Deep-Sky Solution

    While the larger Askar 107PHQ is an exceptional instrument, its 5.7kg weight and longer tube can be demanding on mid-size mounts. The Askar 80PHQ delivers the same flat-field, full-frame imaging philosophy of the PHQ series in a significantly more compact and portable package.

    At just 4.7kg fully equipped, the 80PHQ is the clear choice for astronomers who prioritize portability, use lighter-duty mounts, or are looking for a high-end travel scope. You get the same hassle-free, corrected optical system without the demanding weight and size of its larger sibling, making it a versatile performer for both backyard and dark-site imaging.

  • Do I need a field flattener for the Askar 80PHQ?

    No. The Askar 80PHQ is a "flat-field" astrograph with a built-in corrector lens as part of its quadruplet optical design. It produces a corrected 44mm image circle without any additional accessories.

    What is the back focus of the Askar 80PHQ?

    You do not need to calculate back focus. The included set of four photographic adapters is designed to place your camera's sensor at the optimal focal plane. Simply connect your M54 or M48 camera to the end of the adapter chain for a sharp, flat field.

    How will the Askar 80PHQ frame the Pleiades (M45) with an APS-C camera?

    The 600mm focal length of the Askar 80PHQ provides an excellent image scale for large star clusters like the Pleiades (M45). With a typical APS-C sensor, you will be able to frame the core of the cluster and its surrounding nebulosity beautifully, resolving individual stars as sharp points to the edge of the frame.

    Can my HEQ5 mount handle the Askar 80PHQ for astrophotography?

    Yes, absolutely. With a total weight of only 4.7kg including rings and dovetail, the Askar 80PHQ is well within the capacity of an HEQ5 or similar mid-range equatorial mount for stable, long-exposure astrophotography.

    What do the different lengths listed for the Askar 80PHQ (450mm vs 480mm) refer to?

    The length of the telescope depends on which adapter is attached to the rear and the position of the retractable dew shield. The 450mm length is with the 1.25" eyepiece holder attached and the dew shield retracted, while the 480mm length is with the 4-piece photo adapter set attached and the dew shield retracted. The dew shield provides an additional 90mm of extension.

    What does the "two ED glass" in the Askar 80PHQ's objective do?

    The two Extra-low Dispersion (ED) glass elements significantly reduce chromatic aberration, which is the color fringing (typically purple or blue halos) seen around bright stars in simpler refractors. This results in sharper stars, higher contrast, and more accurate color rendition in your images.

  • Aperture 80mm
    Focal Length 600mm
    Focal Ratio f/7.5
    Objective Lens Quadruplet air-spaced APO with two ED elements
    Image Circle 44mm
    OTA Weight 3.9kg
    Total Weight 4.7kg (including tube rings & dovetail plate)
    Total Length 450mm to 570mm (depending on configuration)
    Rear Adapters M76×1, M68×1, M54×0.75, M48×0.75 (with internal filter thread)

    • Askar 80PHQ OTA

      × 1

    • Tube Rings

      × 1 Pair

    • Carry Handle

      × 1

    • Askar 300mm Vixen Dovetail Plate

      × 1

    • 4-Piece Photographic Adapter Set

      × 1

    • Instruction Manual

      × 1

  • Askar 1-Year Warranty