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Explore Scientific

Explore Scientific FirstLight 102 mm f/9.8 Achromatic Refractor Telescope on Twilight Nano Alt-Azimuth Mount (FL-AR102600TN)

Explore Scientific FirstLight 102 mm f/9.8 Achromatic Refractor Telescope on Twilight Nano Alt-Azimuth Mount (FL-AR102600TN)

$279.99
$279.99
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Shipping calculated at checkout.

The Explore Scientific FirstLight 102 mm f/9.8 Achromatic Refractor Telescope (FL-AR102600TN) combines a classic 4-inch optical tube with a lightweight, easy-to-use Twilight Nano Alt-Azimuth mount — delivering bright, high-contrast views of celestial objects for both beginners and casual observers. The 102 mm aperture and 980 mm focal length provide detailed lunar and planetary views as well as stunning perspectives on star clusters and brighter deep-sky objects. Fully coated achromatic optics help enhance light transmission and suppress chromatic aberrations. The included accessories — such as a 2″ star diagonal, 25 mm Plössl eyepiece, and a red-dot finder — make this telescope ready to observe right out of the box. The compact, portable setup is perfect for backyard viewing, star parties, or spontaneous observing sessions.

Features

  • 102 mm aperture — gathers ample light for clear visuals of the Moon, planets, clusters, and nebulae.

  • f/9.8 focal ratio — balanced optics for sharp views with enhanced contrast across the field.

  • Twilight Nano Alt-Azimuth mount — intuitive, smooth movement in altitude and azimuth directions for effortless tracking and aiming.

  • 2″ star diagonal included — provides comfortable viewing angles and improves eye relief during observation.

  • 25 mm Plössl eyepiece — offers a pleasing balance of magnification and field of view for wide-field viewing.

  • Red-dot finder — helps you locate celestial targets quickly.

  • Fully multi-coated optics — maximize light transmission and deliver bright, crisp images.

  • Compact and portable — ideal for travel, backyard astronomy, or first-telescope experiences.

Specifications

Specification Detail
Model Number FL-AR102600TN
Optical Design Achromatic refractor
Aperture 102 mm (4″)
Focal Length 980 mm
Focal Ratio f/9.8
Mount Type Twilight Nano Alt-Azimuth
Focuser Standard rack-and-pinion
Eyepiece Included 25 mm Plössl (1.25″)
Diagonal 2″ star diagonal
Finder Red-dot finder
Optics Coatings Fully multi-coated
Use Case Visual observing — lunar, planetary, and bright deep-sky objects
Portability Lightweight, travel-friendly design

What’s Included

  • 102 mm f/9.8 achromatic refractor optical tube

  • Twilight Nano Alt-Azimuth mount

  • 2″ star diagonal

  • 25 mm Plössl eyepiece

  • Red-dot finder

  • Mounting hardware and accessories

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Frequently Asked Questions

With a beginner telescope you can see a surprising amount — the craters and mountains on the Moon, the rings of Saturn, the moons of Jupiter, and star clusters like the Pleiades. As you get more comfortable, you can also spot nebulae and distant galaxies. Not sure which beginner telescope is right for you? Check out our Telescope Buying Guide.
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All telescopes on Telescope Wolves are hand-picked with beginners in mind. If you're unsure which telescope is right for you, check out our Telescope Buying Guide.
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