
September 2023 Astronomy Events
Fall has officially arrived in September 2023 bringing a new set of celestial events to observe in our night sky. At the top of the month, the Moon makes a...
Premium GoTo equatorial tracker mount - Take 50% off
Up to 50% off eyepieces - Save now
Buy one, get one 20% off - Alpen Optics
Up to 50% off premium eyepieces
Compare Explore Scientific's popular 4-inch air-spaced triplet refractors
Facet | |||
---|---|---|---|
Price | |||
Price |
$1,199.99
Unit price
/
Unavailable
|
$1,999.99
Unit price
/
Unavailable
|
$2,499.99
Unit price
/
Unavailable
|
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
|
Dobsonians have long been the preferred choice of beginner & serious visual astronomers due to their large aperture, excellent light-gathering ability, and low cost.
Explore Scientific
Explore FirstLight 8" f/6 Dobsonian Telescope Package
Explore Scientific
Explore Scientific 10" f/5 Hybrid Truss Tube Dobsonian Telescope
Explore Scientific
Explore FirstLight 10" f/5 Dobsonian Telescope Package
Explore Scientific
Explore Scientific 10" f/5 Truss Tube Dobsonian Telescope
Explore Scientific
Explore Scientific 12" f/5 Truss Tube Dobsonian Telescope
Explore Scientific
Explore Scientific 16" f/4.5 Truss Tube Dobsonian Telescope
Explore Scientific
Explore Scientific 20" f/3.6 Truss Tube Dobsonian Telescope
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.
Facet | |||
---|---|---|---|
Price | |||
Price |
$1,999.00
Unit price
/
Unavailable
|
$2,499.00
Unit price
/
Unavailable
|
$4,899.00
Unit price
/
Unavailable
|
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 |
Fall has officially arrived in September 2023 bringing a new set of celestial events to observe in our night sky. At the top of the month, the Moon makes a...
As you begin to expand your visual and imaging astronomical observations, you will find that certain telescope filters can enhance your views. In this guide, we'll discuss different telescope filter...
We recommend Explore Scientific's Waterproof Eyepieces. These premium eyepieces are argon-purged at all focal lengths. Internal elements will remain pristine.
Late-summer stargazing in August 2023 begins with a bright Sturgeon supermoon on the first day of the month. A week later, on the 9th, Mercury reaches its widest separation from the Sun providing...
July 2023 kicks off with great placements of star clusters Messier 22 (M22) and IC 4756. Shortly thereafter, the Full Buck Moon shines at peak illumination positioned in the Sagittarius constellation....
The first thing to note about observing Mercury is to be careful, especially when using a telescope. Since Mercury's orbit is so close in proximity to the Sun, you should...
June 2023 begins with a close approach of Mars and the Beehive Cluster (M44) which can be seen on the first Friday of the month. The Full Strawberry Moon lights...
Of course if cost is a major consideration, you may want to start out with the AR102 ($599.99) rather than the ED102 ($1,199.99) or ED102-FCD100 ($1,999.99). If you are an experienced...
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
Sign up for insights, exclusive offers and new product releases