29% Off

Explore Scientific 25x50mm Galileoscope Refractor Telescope Kit

SKU: ESGSCOPE MFR: GSCOPE
$49.99
$69.99
Save: $20 (29%)
Earn VIP Reward Points

Key Features

  • Explore the night sky with this 25x50mm refractor telescope kit, perfect for beginners.
  • Achieve 50x magnification with the included Barlow lens, enhancing your telescopic views.
  • Features a 50mm aperture, gathering ample light for bright, clear astronomical images.
  • Easy to assemble, this telescope is great for educational purposes and stargazing fun.
  • Enjoy a wide 1.5-degree field of view, ideal for scanning constellations with your telescope.
  • Lightweight and portable, take this Explore Scientific telescope on all your adventures.
See More Product Details
Special Order?Estimated to Ship: 08/20/2025
Calculate Shipping

See Options

1

Protect your gear with Adorama Protect.* Learn more

1 Year

$3.99

2 Year

$5.99

3 Year

$8.99

Available to U.S. customers only.

Need help? Ask our experts.

Overview
Compare
Specs
Protection
Q&A

Questions & Answers

Reviews about this item

Review Summary

Select a plan in the Add Protection section above and purchase with this product by clicking “Add to Cart”.

image-protection

TRUSTED PROTECTION PLANS, EXCEPTIONAL SERVICE.

Invest In Your Gear and Peace Of Mind!

Accidents happen. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failures, and more.

Repair or Replacement

Repair or Replacement

If we can’t fix it, we’ll replace it at no additional cost.

Accidental Damage

Accidental Damage

Protect your product from drops, spills, and more.

Peace of Mind

Peace of Mind

Enjoy your gear without fear. We have you covered!

Failure Protection

Failure Protection

When regular use of your product over time results in mechanical or electrical failure.

Zero Deductible

Zero Deductible

We will never charge you a deductible after the purchase of a plan.

Customer-Focused Support

Customer-Focused Support

Our claims process is simple & easy and our customer service team is happy to help.

Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for international or U.S. territories purchases. Plans on open box items do not cover pre-existing damage.
Adorama Protect plans are available for ABS clients. If you have any questions or require assistanse, please call 800-223-2500

Explore Scientific Telescope Kit Specifications

  • Additional Included Items

    Eyepiece Clamp Ring
    Eyepiece Eye-End Ring
    Barlow Tube
    2x Galilean Eyepiece/Barlow Lenses
    2x Galilean Eyepiece Tube Halves
    Galilean Eyepiece Clamp Ring
    Galilean Eyepiece/Barlow Eye-End Ring
    Sun-Warning Sticker

  • Diameter

    50 mm (2")

  • Magnification

    25x (50x with Barlow)

  • Focal Length

    500 mm

  • Focal Ratio

    f/10

  • Eyepiece Focal Length

    20 mm

  • Field of View

    1 1/2 Degree (3/4 Degree with Barlow)

  • Eyepiece Eye Relief

    16 mm (22 mm with Barlow)

  • Eyepiece Barrel Diameter

    1.25" (31.75mm)

About Explore Scientific Telescope Kit

While the Original Galileoscope, a product of the collaborative efforts of renowned astronomers, optical designers, and educators, was initially conceived as a cornerstone project for the 2009 International Year of Astronomy (IYA), it has since evolved into a much-loved tool for both optics education and celestial observation. This high-quality, cost-effective telescope kit addresses the need for an accessible, yet superior instrument that can be used for studying the intricacies of light and observing the wonders of the cosmos.

The Galileoscope's popularity soared during the 2015 International Year of Light (IYL), and through the dedication of volunteers and the power of word-of-mouth, over a quarter-million Galileoscope kits have found their way into the hands of teachers, students, and astronomy enthusiasts in more than 110 countries. This widespread distribution has significantly contributed to science education and public outreach.

Despite initial plans to conclude the project after the IYA, the global astronomy education and outreach community's overwhelming affection for the kit led to its continued production. The creators, Stephen M. Pompea, Richard Tresch Fienberg, Douglas N. Arion, Thomas C. Smith, and Douglas Isbell, maintained its production for nearly a decade, serving the educational STEM community.

The demand for the Galileoscope remained high, prompting a search for a successor to carry on its legacy. In late 2018, Explore Scientific, a brand known for its high-quality optical instruments, was chosen to take over the manufacturing and distribution of the Galileoscope. This partnership ensures that educators and students worldwide can continue to explore the universe with the durable, high-quality, and user-friendly 25x50mm Galileoscope Refractor Telescope Kit, a portable and versatile tool for unlocking the learning process.

Explore Scientific Telescope Kit Features

  • Galileoscope telescope kit includes all of the parts and instructions needed for young explorers to build their own 50mm refractor
  • Assembly is quick and requires no tools or adhesives
  • Enjoy views of the lunar surface, Jupiter's Galilean moons, Saturn's rings and bright star clusters
  • Kit includes a 20x eyepiece and a custom accessory that can be assembled as a 2x Barlow lens for a power of 50x or a 17x Galilean eyepiece with a right-side-up field of view less than 1/2 Degree wide so the user can experience the views Galileo had of the the expansive night sky
  • Learn basic optical concepts, including how lenses form images and how magnification affects field of view

Key Features

  • Explore the night sky with this 25x50mm refractor telescope kit, perfect for beginners.
  • Achieve 50x magnification with the included Barlow lens, enhancing your telescopic views.
  • Features a 50mm aperture, gathering ample light for bright, clear astronomical images.
  • Easy to assemble, this telescope is great for educational purposes and stargazing fun.
  • Enjoy a wide 1.5-degree field of view, ideal for scanning constellations with your telescope.
  • Lightweight and portable, take this Explore Scientific telescope on all your adventures.

What's in the box:

  • Lens Shade/Dew cap
  • Objective Lens
  • 2x Main Tube Halves
  • 1/4-20 Mounting Nut
  • 2X V-Block Bases/Stands
  • Main-Tube Clamp Ring
  • 2x Main-Tube O-Rings
  • 2x Focuser Tube Halves
  • 2x Focuser O-Rings
  • 4x Eyepiece Lenses
  • 2x Eyepiece-Barrel Halves
  • Eyepiece Field-Stop Ring
  • (See Specification Section for Additional Included Items)
  • Explore Scientific 1 Year Limited Warranty (Lifetime Limited Warranty with Registration)