Under $200

Explore Scientific Nebula Filter 1.25" CLS Range from 436nm to 536nm with peak at 488nm. Transmission 98.3% This is a general-purpose light-pollut...

Explore Scientific Nebula Filter 1.25" CLS Range from 436nm to 536nm with peak at 488nm. Transmission 98.3% This is a general-purpose light-polluti...

Description This adapter allows you to attach the 3-inch 0.7X Field Flattener Focal Reducer (FFFR507X-00) on optical tubes with a 2-inch focuser. ...

A luxurious take on the traditional camp shirt. The fabric features a smooth-draping weave that’s richly textured for distinctive character, and th...

Give the gift of exploration. Gift cards are delivered by email and contain instructions to redeem them at checkout. Our gift cards have no additio...

Description Designed to fit Explore Scientific’s 50mm reticle finder scopes, this spare LED illuminator offers deep red illumination with variable...

Description This T-Shaped Finder Scope Base is specifically designed to allow you to secure one of Explore Scientific’s high-quality finder scopes...

Description A good Focal Extender adds some real versatility to your telescope accessory line-up. First of all, it allows you to increase the magn...

Description A good Focal Extender adds some real versatility to your telescope accessory line-up. First of all, it allows you to increase the magn...

Description Explore Scientific cradle assemblies fit their appointed telescope OTA snuggly, yet protect the delicate surface of the tube. The hing...

Description Explore Scientific cradle assemblies fit their appointed telescope OTA snuggly, yet protect the delicate surface of the tube. The hing...

Description This Finder Scope Base is specifically designed to allow you to secure one of Explore Scientific’s high-quality finder scopes to the t...

Description Explore Scientific finder-scope rings are all made for 50mm finders. Choose from a classic low profile bracket (about an inch tall), o...

Description Explore Scientific finderscope rings are all made for 50mm finders. Choose from a classic low profile bracket (about an inch tall), on...

Standard Height 50mm Finder Scope Rings Description Explore Scientific finder-scope rings are all made for 50mm finders. Choose from a classic low...

Description The Explore Scientific 2-inch Dielectric-Coated Diagonal Mirror comes complete with 1.25-inch Adapter and dust covers. Solid construct...

Description Explore Scientific’s dual speed, 2" AR Series Focuser comes with a 1.25" compression ring eyepiece adapter for added versatility. This...

Description A saddle plate is not the most exciting astronomical accessory in the world, but it is one of the most important when it comes to the ...

Description The 8x50 finder scope has a standard crosshair to help you center objects precisely. The straight-through, non-erect image viewer has ...

Jupiter is well named after the King of the Gods in Greek mythology, it is the largest planet in both mass and size, and possesses the ...

Misconceptions about large numbers are some of the most persistent and troublesome bits of misinformation. Not just children, but a lar...

The idea that tides are linked to the Moon is an old one. Galileo was one of the first scientists to develop the idea of tides being...

The French mathematician and astronomer, Edouard Roche, is most famous for his work on celestial mechanics and his discovery of t...

Features Rotatable 360° diagonal to find the perfect viewing angle! 360mm Focal Length Full-length AZ Panhandle Mount Capture what you see with t...

Features Variable polarizing filter Individually adjustable image brightness Made from highly parallel optical glass Black anodized aluminum hous...

We all know that the gravitational field of any moon causes tides on its home planet. The height of the tide for a moon also depends upon the natur...

In August of 2006 the International Astronomical Union famously downgraded Pluto, which was considered the 9th planet in our solar system, to be re...

If you study science long enough, you eventually discover that Galileo was right about the constantly changing nature of scientific knowledge. Y...

Give the gift of exploration. Gift cards are delivered by email and contain instructions to redeem them at checkout. Our gift cards have no additio...

There is a misconception that ‘doing real astronomy’ is difficult and expensive, only highly trained and generously funded people can do it; ...

Humans have attempted to map the stars in the sky since antiquity.  The earliest Western catalog of stars was created by the Greek astronomer...

Features Explore everything from the soil to the stars with this 50mm telescope and 640x microscope set. Easy-to-use refracting telescope has a 5...

  Fact, Hypothesis, Theory There is a distinct hierarchy in science that distinguishes facts, hypotheses, and theories. We misunderstand and ...

Mars - The Dying Planet Astronomers have been exploring Mars with telescopes for four centuries, and the fascination of the red planet with its ...

Russian biologist A. P. Oparin and Scottish biologist J. B. S. Haldane both proposed an early reducing atmosphere on Earth consisting of hydr...

Features Special mount atop telescope tube allows users to attach their device to the telescope and easily locate constellations and planets in t...

FREE Explore One 30mm Compact Binoculars, when purchasing an Explore Science STEM product. To activate this promotion, add both items to your cart ...

FREE Explore One 30mm Compact Binoculars, when purchasing an Explore Science STEM product. To activate this promotion, add both items to your cart ...

FREE Explore One 30mm Compact Binoculars, when purchasing an Explore Science STEM product. To activate this promotion, add both items to your cart ...

FREE Explore One 30mm Compact Binoculars, when purchasing an Explore Science STEM product. To activate this promotion, add both items to your cart ...

The Viking Experiments In the early 1960’s, long before humans had left low Earth orbit, NASA was planning a mission to Mars that would soft-...

Sketching Saturn: The Box and Rectangle Method The first discoveries the system of the rings and moons around Saturn predate photographic tec...

Saturn has 7 major moons and more than 70 known moonlets. For the amateur astronomer, detecting and identifying these major moons is a challe...

Description Dual plug (DB9 FTDI chipset and USB 2.0 Mini B) works with PMC-Eight OPENGoTo systems, allowing ASCOM communications between a compute...

We normally think of galaxies as some of the largest, brightest structures in the universe – but that isn’t always true. It is star formation t...