WILLIAM OPTICS GT81 Apo Refractor 81GT

( Brand: William Optics ), ( Manufacturer Part Number: GT81 ), ( Color: Gold ), ( Type: Telescope ), ( Lens Coating: Multi-coated ), ( Objective Lens Diameter: 81 Mm ), ( Maximum Magnification: 140x ), ( Features: Anti-reflection Coating, Retractable Hood ), ( Country/region Of Manufacture: Taiwan ), ( Optical Design: Refractor ), ( Application: Astronomy ), ( Item Weight: 10 Lbs )

Review WILLIAM OPTICS Gold Apo Refractor

William Optics GT81 APO Refractor Telescope - Precision and Clarity in a Compact Design

Embark on a celestial journey of unparalleled clarity and precision with the William Optics GT81 APO Refractor Telescope. This remarkable instrument, crafted with meticulous attention to detail, offers an exceptional viewing experience for both beginners and seasoned astronomy enthusiasts alike.

The GT81 features an 81mm aperture and a focal length of 600mm, providing a balanced combination of light gathering ability and high-resolution imaging. Its APO (Apochromatic) design ensures that celestial bodies appear with astonishing sharpness and true-to-life color fidelity, eliminating chromatic aberrations that can otherwise mar the viewing experience.

The telescope boasts a lightweight, yet robust, carbon fiber tube that ensures stability during observation, while keeping the overall weight low for easy transportation. The tube is paired with a dual-speed 2" Crayford-style focuser, offering smooth and precise focus adjustments for a wide range of accessories, including cameras and eyepieces.

The GT81 comes equipped with a 2" 28mm Pl ssl eyepiece, offering a generous 22.9mm apparent field of view, perfect for viewing wide expanses of the night sky. The telescope also features a 1.25" visual back, enabling the use of a wide variety of accessories to cater to specific observing needs.

Setting up the GT81 is a breeze, thanks to its compact size and the included dovetail bar and Vixen-style dovetail plate. The telescope's collar ring allows for easy orientation and balance when mounted on equatorial or alt-azimuth mounts.

In addition to its stellar performance, the William Optics GT81 APO Refractor Telescope is a testament to the art of telescope-making, with its sleek, modern design and high-quality construction. Whether you're observing the Moons of Jupiter, the rings of Saturn, or distant galaxies, the GT81 delivers an experience that is nothing short of breathtaking.

Experience the cosmos like never before with the William Optics GT81 APO Refractor Telescope. Your journey into the universe awaits!

The William Optics GT81 (81GT APO Refractor) is a high-quality astronomical telescope, particularly popular among astrophotographers. Here are some pros and cons to consider:

1. High Quality Optics: The GT81 features fluorite doublet optics, which provide excellent image quality with low dispersion and high contrast. This is particularly beneficial for astrophotography, as it helps to reduce chromatic aberration.

2. Compact and Lightweight: With a weight of just 7.5 lbs (3.4 kg), this telescope is highly portable, making it easy to transport to different observing sites.

3. Fast Focal Ratio: The f/5.5 focal ratio allows for a wide field of view and more light gathering capability, which can be advantageous for deep-sky imaging.

4. High Quality Tube Ring and Dovetail: The tube ring and dovetail design is robust and allows for easy attachment of accessories.

5. Good Value for Money: Compared to other high-end apochromatic refractors, the GT81 offers a good value for the price.

1. Price: While it offers good value for money, the GT81 is still a relatively expensive telescope, which may be prohibitive for some potential buyers.

2. Size: Despite being compact and portable, the GT81 is not the smallest telescope on the market, which may make it less suitable for those with limited space.

3. Focusing Mechanism: Some users have reported issues with the focusing mechanism, finding it to be somewhat stiff or difficult to adjust.

4. Limited Accessories: The telescope does not come with a finderscope or mount, so these will need to be purchased separately.

If you're an astrophotographer looking for a high-quality, portable apochromatic refractor, the William Optics GT81 could be an excellent choice. However, its relatively high price and potential focusing mechanism issues are important factors to consider. If you're on a tighter budget or have limited space, you may want to consider other options.

If you can afford the investment and are prepared to potentially deal with the focusing mechanism issues, the William Optics GT81 could be a great addition to your astronomy equipment. However, it's always a good idea to research and compare other options in the same price range to ensure you're making the best decision for your needs.

Details:

This is basically the exact same telescope Optics as now sold GT81 IV. I bought this at NEAF around 10 years ago from William Yang himself. Soft carrying case with shoulder strap. Aperture: 81mm.

Specifications below. Hello All, I am selling my WO 81GT to actually downsize as I'm buying a Whitefield refractor. Rack and pinion dual speed focused. Mount for a finder/guide scope.

This scope is in mint condition as has only left my observatory for a few trips across country.

part #: gt81 prices

• $42.75-$188.68

specifications binoculamonocul:

• brand: William Optics
• mpn: Gt81
• color: Gold
• type: Telescope
• lens coating: Multi-coated
• objective lens diameter: 81 Mm
• maximum magnification: 140x
• features: Anti-reflection Coating, Retractable Hood
• country/region of manufacture: Taiwan
• optical design: Refractor
• application: Astronomy
• item weight: 10 Lbs

general binoculamonocul:

• Cameras Photo > Binoculars Telescopes > Binoculars Monoculars
• condition: Used

offer binoculamonocul:

• options: Ship-to-home
• quantity: 1
• sold: 0
• started: May 18, 2025
• availability: In Stock

returns binoculamonocul:

• policy: No Returns

seller binoculamonocul:

• # reviews: 3
• rating: 0.0%
• city: Gardner, Massachusetts

shipping binoculamonocul:

• class: Expedited
• type: Calculated
• service: USPS Priority Mail
• cost: $34.53
• carrier: USPS
• transit: 5-11 Days

payments binoculamonocul:

• credit card: Visa
• other
• wallet: Google-pay

William Optics GT81 Is Similar To:

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