EXPLORE SCIENTIFIC ES-ON20859 Dobsonian Reflector Telescope 8-INCH F/5.9

( Brand: Explore Scientific ), ( Manufacturer Part Number: ES-ON20859 ), ( Department: Men ), ( Type: Telescopes )

Review EXPLORE SCIENTIFIC 8-inch F/5.9 Dobsonian Reflector Telescope Black

The Scientific Esprit DEV20859 8-inch f/5.9 Dobsonian reflector telescope is an excellent choice for both beginner and advanced astronomers seeking a versatile and powerful observing instrument. This telescope features an 8-inch (20.32 cm) parabolic primary mirror, which gathers a substantial amount of light for stunning deep-sky observations and sharp planetary views. The f/5.9 focal ratio strikes a perfect balance between light-gathering ability and ease of use, making it an ideal telescope for a wide range of astronomical targets.

The Dobsonian design of this telescope offers numerous benefits, including easy setup and portability. The sturdy and stable Dobsonian base allows for precise and smooth tracking of celestial objects, ensuring that they remain in the field of view for extended periods. The telescope comes equipped with a 2-inch (50.8 mm) Crayford focuser, which provides fine focusing adjustments and can accommodate a wide range of accessories, such as eyepieces, Barlow lenses, and cameras.

The telescope tube is constructed from lightweight and durable aluminum, while the primary and secondary mirror cells are made from robust steel. The primary mirror is coated with a high-quality reflective layer, ensuring excellent reflectivity and minimal light loss. The telescope includes a finderscope with a 6 x 30 magnification eyepiece to help you locate and center your targets.

The Scientific Esprit DEV20859 8-inch f/5.9 Dobsonian reflector telescope is an excellent all-around observing instrument, suitable for observing a wide range of celestial objects, from bright planets and the moon to deep-sky wonders such as galaxies, star clusters, and nebulae. Its impressive light-gathering ability and versatile design make it an essential tool for any serious astronomer, whether you're just starting out or have years of experience under your belt. With its easy setup and portable design, you can take your astronomy hobby on the go and explore the wonders of the night sky from anywhere.

The Celestron - 8 inch Dobsonian Stargrinder Reflector Telescope, model number 61006, is a popular choice for amateur astronomers due to its affordability, portability, and decent performance. Here are some pros and cons of purchasing this telescope:

1. Affordability: The Stargrinder is one of the most affordable 8-inch Dobsonian telescopes in the market. It offers excellent value for the price.

2. Portability: The telescope comes with a sturdy yet lightweight design, making it easy to transport and set up in various locations.

3. Wide field of view: The 8-inch primary mirror provides a large and bright image, allowing for a wider field of view than smaller telescopes.

4. Easy to use: The Dobsonian design of the telescope makes it easy to use for beginners, with no need for alignment or collimation.

5. Good for deep sky viewing: The telescope is well-suited for observing deep sky objects such as galaxies, star clusters, and nebulae.

1. Manual focus: The Stargrinder does not come with a motorized focus system, which may require more effort to achieve a sharp image.

2. Limited magnification: The telescope has a limited magnification capability, which may not be suitable for observing planets or other high-detail objects.

3. Difficulty seeing double stars: The wide field of view of the telescope can make it challenging to resolve double stars and other fine details.

The Celestron - 8 inch Dobsonian Stargrinder Reflector Telescope is an excellent choice for those looking for an affordable, portable, and easy-to-use telescope for observing deep sky objects. While it may not offer the highest magnification or finest details, it provides a large and bright image that is perfect for exploring the wonders of the night sky.

If you are a beginner astronomer looking for a relatively inexpensive and portable telescope for observing deep sky objects, the Celestron - 8 inch Dobsonian Stargrinder Reflector Telescope is an excellent choice. However, if you are interested in observing planets or other high-detail objects, you may want to consider a telescope with a higher magnification capability.

Details:

Red-Dot Finder. Aurora, IL 60502, USA. Stable and Intuitive Dobsonian Mount - The smooth mount is designed for all experience levels features a spring tension system that keeps the optical tube balanced, even when using optional accessories. Explore Scientific ES-ON20859: 8-Inch f/5.9 Dobsonian Reflector Telescope, Black.

Explore Scientific 8-Inch f/5.9 Dobsonian Reflector Telescope, Black, ES-ON20859. Features of Explore Scientific 8-Inch f/5.9 Dobsonian Reflector Telescope: Outstanding Deep Sky Performance - The 208mm primary mirror offers impressive light-gathering capability, making this telescope ideal for exploring faint deep-sky targets like nebulae, galaxies, and star clusters, as well detailed views planets the Moon.

part #: eson20859 prices

• $449.99-$806.72

specifications telescuper:

• brand: Explore Scientific
• mpn: Es-on20859
• department: Men
• type: Telescopes

general telescuper:

• Cameras Photo > Binoculars Telescopes > Telescopes
• condition: New

seller telescuper:

• city: Northbrook, Illinois
• # reviews: 5484
• rating: 98.6%

offer telescuper:

• availability: In Stock
• quantity: 1
• sold: 0
• started: April 7, 2026
• options: Ship-to-home

returns telescuper:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted
• method: Money back

payments telescuper:

• wallet: Paypal
• credit card: Diners-club
• other

shipping telescuper:

• cost: $0.00
• type: Calculated
• carrier: USPS, UPS
• transit: 3-8 Days
• service: USPS Ground Advantage, UPS Ground, UPS 2nd Day Air, UPS Next Day Air
• class: Standard, Expedited, One-day

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