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

SKU: ESAR102 MFR: DAR102065-01
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Key Features

  • Explore the cosmos with this 102mm aperture telescope for bright, clear views.
  • Achieve stunning celestial views with the air-spaced doublet achromatic refractor.
  • Enjoy easy aiming with the included 8x50 finderscope; perfect for astronomy nights.
  • The 660mm focal length telescope brings distant objects into sharp, detailed focus.
  • Stable mount ensures smooth tracking for planets, stars, and deep-sky wonders.
  • This refractor telescope offers exceptional optical quality for memorable stargazing.
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Special Order?Estimated to Ship: 09/07/2025
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Questions & Answers

Shopper : Why Did You Choose This?Andrea T : Heard it was good for astrophotographyRichard K : I already have 2 long focal length scopes and my son helped himself to my short tube so I bought this

Reviews about this item

Review Summary

2020-10-07T07:39:39

Rated 5 out of 5

Astronomy

Great construction.

DANIEL S.

2020-10-07T07:38:24

Rated 5 out of 5

Astronomy

Great quality, very recommended.

DANIEL S.

2020-01-21T13:22:11

Rated 5 out of 5

Great telescope!

Haven’t had much time to used it because of the weather but you can tell is a quality instrument.... so far so good

RICARDO R.

2019-04-02T20:04:24

Rated 5 out of 5

The scope arrived today and I am well pleased. .

It wasn't too long ago that an air spaced doublet would be a lot more expensive. There were no detectable flaws in the finish. I have not taken it outside under a clear night yet but looking out through a window to align the finder scope I didn't see much chromatic aberration. I already own two long focal length scopes so this relatively wild field scope will be a welcome addition.

Richard K.

2018-02-01T08:08:08

Rated 5 out of 5

Explore Scientific AR102

Excellent achomatic refractor, good all around size for portability and visual observation especially when paired with a twilight 1 mount.

Bob N.

2013-04-01T21:00:00

Rated 3 out of 5

It's just OK.

I'm a little disappointed with the finish quality of this telescope. The black piece that goes around the end of the dew shield looks like it had a bad glue job by whoever put it on. The finish of the painted tube is a little bumpy here and there where it clearly should be smooth like they had gotten a little dirt on the outside of the scope while painting it. Things like this make me question the quality of the rest of the scope. I've used it a few times now. The dove tail is painted so it will get marked up when it's put on the mount. The focuser feels smooth and does not go out of focus easily. There is a significant amount of CA on Jupiter, however the moon looks good. All in all, It's not bad for the price. Would I recommend it? Meh. Probably not. I'd probably tell someone to spend another $300 and get something you'll be happier with.

Mr W.

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Explore Scientific AR102 Specifications

  • Focal Length

    660mm

  • Finderscope

    8x50

  • UPC Code

    812257010080

44 Accessories for Explore Scientific AR102, 102mm f/6.5 Air-Spaced Doublet Achromatic Refractor Telescope

  • All Accessories (44)
  • Eyepieces & Accessories (28)
  • Filters (4)
  • Tripods (1)
  • Cleaning Accessories (1)
  • T-Mounts (5)
  • Navigational Accessories (1)
  • Telescope Accessories (2)
  • Flashlights & Area Lights (1)
  • Support Equipment (1)

About Explore Scientific AR102

FEATURED REVIEWS

Astronomy

By DANIEL S.

Great construction.

Astronomy

By DANIEL S.

Great quality, very recommended.

Be captivated by the celestial wonders with the AR102, 102mm f/6.5 Air-Spaced Doublet Achromatic Refractor Telescope. This classic air-spaced, crown-and-flint, doublet achromatic refractor has been re-engineered with the goal of delivering superior optical performance in a compact, f/6.5 focal length design, as part of the Explore Scientific Air-Spaced Doublet AR Series.

This telescope is more than just an optical instrument; it's a gateway to the universe. Its high-quality optics offer an exceptional value, producing breathtaking images of deep sky objects, double stars, planets, and the moon. These stunning visuals rival those of apochromat refractors with comparable aperture, making it an excellent choice for both amateur astronomers and seasoned stargazers.

Built to withstand the demands of public star parties and educational outreach, the AR102, 102mm f/6.5 Air-Spaced Doublet Achromatic Refractor Telescope features standard hardware that ensures durability and longevity. This includes a precision 10:1 two-speed focuser for fine-tuned adjustments, a 2-inch diagonal for wide field views, and an 8x50 finder scope for easy object location.

With the AR102, 102mm f/6.5 Air-Spaced Doublet Achromatic Refractor Telescope, you can trust in the quality and construction of this telescope to withstand heavy use, while delivering exceptional viewing experiences. Explore the universe in stunning detail with this remarkable telescope.

Explore Scientific AR102 Features

  • The optics in the collimatable lens cell are fully multi-coated to eliminate light scatter and maintain image contrast. Explore Scientific precision collimate every Explore Scientific telescope at factory to give optimum performance
  • Contrast is further enhanced with multiple baffles that mask and deflect unwanted stray light
  • Deluxe 10:1 Two-Speed Focuser: The Explore Scientific Air-Spaced Doublet AR Series telescopes include a precision 2-inch ten-to-one, two-speed as standard equipment. The eyepiece holder uses a compression ring to prevent the eyepiece or camera barrel from scoring
  • Universal Mounting Plate: The Universal Adjustable Mounting Plate of the AR 102 fits on many popular equatorial and Altaz mounts, including mounts supplied by Explore Scientific, Vixen and Meade LXD55/75
  • 2" Diagonal Mirror: The Two Inch Mirror Diagonal includes a 1.25" eyepiece holder adapter. The purpose of a diagonal is to securely hold your eyepiece and to give you a comfortable viewing angle
  • 8x50 Finder Scope: The Explore Scientific 8x50 Finder Scope provides a true field of view of 6deg.. Its coated optics provide a bright high-resolution image so that many faint stars and nebulosity can be detected for precise aiming

Key Features

  • Explore the cosmos with this 102mm aperture telescope for bright, clear views.
  • Achieve stunning celestial views with the air-spaced doublet achromatic refractor.
  • Enjoy easy aiming with the included 8x50 finderscope; perfect for astronomy nights.
  • The 660mm focal length telescope brings distant objects into sharp, detailed focus.
  • Stable mount ensures smooth tracking for planets, stars, and deep-sky wonders.
  • This refractor telescope offers exceptional optical quality for memorable stargazing.

What's in the box:

  • Explore Scientific AR102 f/6.5 Achromatic Refractor Telescope
  • 8x50 Finderscope and Bracket
  • Mounting Cradle Ring
  • 90deg Star Diagonal
  • Objective Lens Cap
  • Focus Tube Cap
  • Explore Scientific 1 Year Limited Warranty
  • Explore Scientific Lifetime Limited Warranty (with Registration)