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Celestron AstroMaster 102AZ Telescope
Celestron AstroMaster 102AZ Telescope
Celestron AstroMaster 102AZ Telescope
Celestron AstroMaster 102AZ Telescope
Celestron AstroMaster 102AZ Telescope

Celestron AstroMaster 102AZ Telescope

by Celestron
SKU CEL-22065
$359.95 - $359.95
$359.95
$359.95 - $359.95
$359.95
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  • 102mm (4") refractor optical tube
  • 660mm focal length at f/6.5
  • Manual alt-azimuth mount with smooth, intuitive controls
  • Includes 33x and 66x magnification eyepieces
  • Erect image diagonal for correct orientation in daytime and nighttime viewing
  • Lightweight design with a total kit weight of 12.9 lbs
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Celestron AstroMaster 102AZ Telescope

    The Celestron AstroMaster 102AZ Telescope combines a 102mm (4") refractor objective with a simple alt-azimuth mount, delivering bright views of celestial objects with a light-gathering power 212x that of the human eye. Its 660mm focal length provides magnifications of 33x and 66x with the included eyepieces, making it ideal for observing the Moon's craters, the rings of Saturn, and bright star clusters. The erect image 90° diagonal ensures correctly oriented views, allowing the AstroMaster 102AZ to transition seamlessly from astronomical observing to daytime terrestrial viewing.

    102mm Refractor: 212x More Light Gathering Than the Eye

    The core of this telescope is its 102mm achromatic refractor objective. This classic optical design provides sharp, high-contrast images that refractors are known for, resolving details down to 1.14 arc seconds (Dawes). With a focal ratio of f/6.5, the AstroMaster 102AZ offers a wide field of view, perfect for scanning the Milky Way or framing large open clusters like the Pleiades (M45).

    The fully coated optics enhance light transmission, revealing faint objects down to a limiting stellar magnitude of 12.5. This aperture is a significant step up from entry-level 70mm or 80mm refractors, providing the resolving power needed to clearly see Jupiter's cloud bands and its four Galilean moons.

    Alt-Azimuth Mount: Grab-and-Go Terrestrial and Celestial Viewing

    Designed for intuitive, no-tool setup, the manual alt-azimuth mount allows you to point and observe with simple up-down and left-right motions. This makes it incredibly easy to track objects, whether it's a planet drifting across the night sky or wildlife in a distant field. The included 90° erect image diagonal corrects the view to be right-side-up and left-to-right correct, a critical feature for daytime use that many astronomy-only telescopes lack.

    • Sturdy Foundation: The pre-assembled tripod features 1.25" steel legs, providing a stable platform with an adjustable height range from 32" to 51".
    • Convenient Storage: An integrated accessory tray keeps your 20mm and 10mm eyepieces organized and within easy reach while you observe.
    • Easy Aiming: The built-in red dot finderscope allows you to place a red dot on your target, making it simple to aim the main telescope accurately.

  • What can I realistically see with the AstroMaster 102AZ?

    The AstroMaster 102AZ's 102mm aperture is excellent for our solar system. You can expect to see detailed craters on the Moon, the phases of Venus, Mars' polar caps, Jupiter's main cloud belts and its four largest moons, and the rings of Saturn. Brighter deep-sky objects like the Orion Nebula (M42) and the Andromeda Galaxy (M31) will also be visible.

    Is the AstroMaster 102AZ telescope good for a beginner?

    Yes, it's an excellent choice for beginners. The no-tool setup means you can go from the box to observing in minutes. The manual alt-azimuth mount is intuitive, and the included erect image diagonal makes it a dual-purpose instrument for both night sky and daytime land viewing.

    How does the AstroMaster 102AZ perform for daytime land viewing?

    It performs very well for terrestrial observation thanks to its erect image optics, which provide a correctly oriented image. With the 33x and 66x eyepieces, it's ideal for viewing distant landscapes, ships on the water, or wildlife. The manual mount allows for easy panning to follow moving targets.

    Can I take pictures with the AstroMaster 102AZ?

    While the manual mount is not designed for long-exposure astrophotography, you can take basic photos of the Moon and planets (afocal imaging) by holding a smartphone camera up to the eyepiece. Specialized smartphone adapters can make this easier and more stable.

    What eyepieces should I get to upgrade the AstroMaster 102AZ?

    A good next step would be a higher-power eyepiece (around 6mm) to get closer to the highest useful magnification of 241x for planetary viewing. A lower-power, wide-field eyepiece (around 32mm) would also enhance views of large star clusters and nebulae. A 2x Barlow lens is another option to double the magnification of your existing 20mm and 10mm eyepieces.

    How portable is the AstroMaster 102AZ?

    The telescope is very portable. The total kit weight is only 12.9 lbs (5.85 kg), with the optical tube itself weighing just 5 lbs. It can be easily transported to a dark sky location or set up in a backyard.

  • Optical Design Refractor
    Aperture 102mm (4")
    Focal Length 660mm (26")
    Focal Ratio f/6.5
    Eyepiece 1 (Magnification) 20mm (33x)
    Eyepiece 2 (Magnification) 10mm (66x)
    Light Gathering Power 212x (Compared to human eye)
    Highest Useful Magnification 241x
    Lowest Useful Magnification 15x
    Limiting Stellar Magnitude 12.5
    Resolution (Dawes) 1.14 arc seconds
    Resolution (Rayleigh) 1.37 arc seconds
    Optical Coatings Fully Coated
    Finderscope Built-in Red Dot Finder
    Star Diagonal Erect Image, 90° (1.25")
    Mount Type Manual Alt Azimuth
    Dovetail Compatibility CG-5 saddle plate
    Tripod 1.25" steel legs
    Height Adjustment Range 812.8mm - 1295.4mm (32" - 51")
    Optical Tube Length 380mm (15")
    Optical Tube Weight 5 lbs (2.25 kg)
    Total Kit Weight 12.9 lbs (5.85 kg)
    Software Celestron Starry Night Basic Edition & SkyPortal App

    • AstroMaster 102AZ Optical Tube

      × 1

    • Tripod and Mount (preassembled)

      × 1

    • 20mm Eyepiece

      × 1

    • 10mm Eyepiece

      × 1

    • Red-dot Finderscope

      × 1

    • Erect Image 90° Diagonal

      × 1

    • Manual

      × 1

  • Celestron 2-Year Limited Warranty