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Explore Scientific  |  SKU: DAR102065-02

Explore Scientific AR102 102mm f/6.5 Doublet Refractor Telescope

$599.99 $719.99

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Ships from US warehouse in 1-2 business days

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Explore Scientific AR102 102mm f/6.5 Air-Spaced Doublet Refractor Telescope



  • 102mm / 4" Aperture
  • 663mm Focal Length, f/6.5 Focal Ratio
  • Achromatic Doublet Lens System
  • 2" Dual-Speed Crayford-Style Focuser
  • 2" Dielectric 90° Diagonal
  • Vixen-Style Dovetail Mounting Plate
  • Mounting Cradle-Ring with Handle
  • 8x50 Finderscope
  • OTA Only - Mount and Tripod Required


Discover the Universe with the Explore Scientific AR102 Air-Spaced Doublet Refractor Telescope

Unlock the secrets of the night sky with the Explore Scientific AR102, a masterpiece of optical engineering. This 102mm (4-inch) f/6.5 air-spaced doublet refractor telescope is your gateway to breathtaking celestial views, offering unmatched clarity and precision at an incredible value.

Exceptional Optical Performance:

The AR102 features a classic air-spaced, crown-and-flint doublet achromatic design, ensuring sharp, high-contrast images free of chromatic aberration. With its superior optical figure, this telescope reveals the stunning details of the moon, planets, and deep-sky objects, making every stargazing session an unforgettable journey of discovery.

Lightweight and Durable:

Weighing in at only 11.5 lbs, the AR102 combines portability with durability. Its design is tailored for the demands of public star parties and educational outreach, ensuring this instrument can withstand the test of time and travel.

Equipped for Exploration:

  • Two-Speed Crayford Focuser: Fine-tune your observations with ease, thanks to the 2-inch two-speed Crayford focuser, equipped with a compression ring for secure eyepiece accommodation.
  • High-Quality Diagonal Mirror: The 99% reflective dielectric-coated 2-inch diagonal mirror includes a 1.25-inch eyepiece adapter, optimizing light transmission for brighter, more detailed views.
  • Versatile Finder Scope: Navigate the night sky with precision using the included 8X50 straight-through finderscope, complete with a quick-release bracket for easy adjustments.
  • Ready-to-Mount Design: The telescope comes with a cradle ring assembly and a 45mm wide dovetail plate (Vixen style), making it ready to mount on your preferred alt-azimuth or equatorial setup.

Your Astronomical Journey Begins Here:

Whether you're a novice astronomer or a seasoned sky watcher, the Explore Scientific AR102 refractor telescope is designed to enrich your exploration of the cosmos. Add your choice of eyepieces and a mount to embark on a celestial adventure that’s as rewarding as it is awe-inspiring.


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Explore Scientific AR102 102mm f/6.5 Doublet Refractor Telescope | DAR102065-02 | 812257010080

Explore Scientific AR102 102mm f/6.5 Doublet Refractor Telescope

$599.99 $719.99




102 mm | 4"

Focal Length

663 mm

Focal Ratio


Field of View



1.14 arcsec resolution

12.5 limiting magnitude

Barrel Size



27.5" (698mm) Tube Length w/ Dew Shield


11.5 lbs | 5.2 kg
View product