Premium GoTo equatorial tracker mount - Take 50% off

Up to 50% off eyepieces - Save now

Buy one, get one 20% off - Alpen Optics

Explore the world above

Industry-leading brands at value prices

Spalshdown Waterproof Eyepiece Sale

Up to 50% off premium eyepieces

0
Days
0
Hours
0
Minutes
0
Seconds
Ends October 1, 2023 at 12:00 am

Alpen Optics Sale

Buy One, Get One 20% Off

Popular brands

Trending ED102 refractor series

Compare Explore Scientific's popular 4-inch air-spaced triplet refractors

A table comparing the facets of 3 products
Facet
Price
Price
$1,199.99
$1,999.99
$2,499.99
Aperture
Aperture
102 mm | 4"
102 mm | 4"
102 mm | 4"
Focal Length
Focal Length
714 mm
714 mm
714 mm
Focal Ratio
Focal Ratio
f/7
f/7
f/7
Optics
Optics

1.14 arcsec resolution

12.5 limiting magnitude

HOYA FCD1 extra-low dispersion (ED) glass

EMD enhanced multi-layer coatings

1.14 arcsec resolution

12.5 limiting magnitude

HOYA FCD100 extra-low dispersion (ED) glass

EMD enhanced multi-layer coatings

1.14 arcsec resolution

12.5 limiting magnitude

HOYA FCD100 extra-low dispersion (ED) glass

EMD enhanced multi-layer coatings

Weight
Weight
12 lb | 5.4 kg
10.9 lb | 4.94 kg
9.5 lb | 4.3 kg

Telescope buyer's guide

Let us help you make a more informed decision

Unistellar eVscope 2

The eVscopes are the world’s most powerful and simple-to-operate smart telescopes, which allow them to bring the wonders of the universe to life in seconds—even in light-polluted urban settings.

A table comparing the facets of 3 products
Facet
Unistellar eVscope eQuinox Smart Telescope - EQUINOX 3701393200073
Unistellar eQuinox Digital Reflector Telescope and Backpack Bundle
View details
Unistellar eVscope eQuinox 2 Smart Telescope - EQUINOX2 3701393200233
Unistellar eQuinox 2 - Smart Telescope for light polluted cities
View details
Unistellar eVscope 2 - Smart Digital Telescope 3701393200226
Unistellar eVscope 2 114mm f/4 GoTo Reflector Telescope
View details
Price
Price
$1,999.00 $2,299.00
$2,499.00
$4,899.00
Field of View
Field of View

27 arcmin x 37 arcmin

34 arcmin x 47 arcmin

34 arcmin x 47 arcmin

Optics
Optics

4.9 Mpx image resolution

6.2 Mpx image resolution

7.7 Mpx image resolution

Nikon Eyepiece

Your Premium Online Store for Telescopes, Optics and Accessories

AstroTelescopium was born out of a compelling desire to give more people the opportunity to explore the world above.

Finding the right tools for viewing the stars, planets, and other celestial bodies can be confusing, daunting and time-consuming.

This is why we have developed partnerships with industry-leading brands to curate the highest quality telescopes, optics and accessories, at value prices, that are enjoyed by beginners and professionals alike.

Our mission is to accelerate the awareness of the world above