Will this eyepiece fit my telescope?

This SVBONY eyepiece uses a standard 1.25-inch barrel size, compatible with most refractor, reflector, and compound telescopes that accept this standard. Ensure your telescope's focuser is designed for 1.25-inch eyepieces for a direct fit and optimal performance.

What magnification will I get with this eyepiece?

Magnification is calculated by dividing your telescope's focal length by the eyepiece's focal length (20mm). For example, with a 1000mm telescope, you'd achieve 50x magnification. Shorter focal lengths yield higher magnification with a narrower field, while longer ones offer wider, brighter views.

How to choose telescope eyepieces for India?

When choosing telescope eyepieces in India, consider the barrel size (1.25-inch is common), focal length for desired magnification, and field of view. Fully multi-coated optics and good eye relief are crucial for clear, comfortable viewing, especially in varied Indian atmospheric conditions. This SVBONY 20mm offers a wide field and comfortable viewing.

Is telescope safe for daily use?

Telescope eyepieces themselves are safe for regular use. However, prolonged direct viewing of the sun through a telescope without proper solar filters can cause permanent eye damage. Always use certified solar filters designed for your specific telescope and eyepiece combination when observing the sun.

What is the best telescope for beginners in India?

For beginners in India, a good starting telescope typically offers ease of use and decent magnification for viewing the Moon and brighter planets. Dobsonian or refractor telescopes with 70-100mm aperture and eyepieces like this SVBONY 20mm for wider views are often recommended. Online retailers offer various options with clear specifications.

Are telescope healthy?

Telescopes are optical instruments that enhance vision, not directly impacting health. However, safe usage is paramount. Never look directly at the sun without a certified solar filter, as this can cause severe and permanent eye damage. Proper handling and storage also ensure longevity and safe operation.

Can I use telescope daily?

Yes, you can use a telescope daily for observing celestial objects, weather permitting. Regular use can enhance your understanding of astronomy. Ensure proper storage to protect the optics from dust and humidity, especially in India's climate, to maintain performance.

Telescope side effects?

The primary risk associated with telescopes is permanent eye damage from looking directly at the sun without a certified solar filter. There are no other direct health side effects from using a telescope for astronomical observation. Always prioritize eye safety.

Telescopes offer numerous benefits, including fostering curiosity about space, enhancing observational skills, and providing educational opportunities for all ages. They allow for detailed viewing of celestial bodies like the Moon, planets, star clusters, and nebulae, connecting users with the wonders of the universe.

SVBONY 20mm Eyepiece | 66 Degree Ultra Wide Angle, 1.25 inch, Fully Multi Coated, Telescope Lens

Name: SVBONY 20mm Telescope Eyepiece | 66 Degree Ultra Wide Angle HD, 1.25 inch Barrel
Brand: SVBONY
SKU: qpj3060
Price: 4921.00 INR
Availability: InStock

About this item

The SVBONY 20mm telescope eyepiece offers a 66-degree apparent field of view, perfect for detailed lunar observations, star clusters, and deep-sky targets. Its fully multi-coated broadband green optics provide superior clarity and contrast, with edge-blackened elements to minimize internal reflection. This eyepiece is designed for comfortable viewing, featuring a generous 16mm eye relief and a collapsible rubber eye guard suitable for eyeglass wearers. The standard 1.25-inch barrel is internally blackened and threaded for astronomy filters and Barlow lenses.

This eyepiece utilizes a multi-element design with 5 elements in 3 groups, delivering sharp images with excellent color correction. The aluminum barrel is robust, and the optics are advanced multi-coated for optimal light transmission. Its wide field of view makes target acquisition easy when switching eyepieces, enhancing your observational experience. The included lens cover protects against dust and moisture.

Imported directly from authorized US retailers and authorized brand partners, this SVBONY eyepiece offers a premium optical experience. All customs duties and GST are included in the displayed price. Delivery is handled via ExpressBox, arriving within 12-14 days. Compare this quality and value to local Indian alternatives.

Key Features

Edge blackened optics;internally blackened to eliminate light scattering;minimize internal reflection and maximize contrast
Fully multi coated broadband green optics with superior optical performance;clarity is great and the magnification is truly represented
66 degree AFOV perfects for broad field lunar observations;medium sized star clusters;wide range of cloudy nebulas and deep sky targets with extra sharpness
Generous 16mm eye relief allows comfortable viewing distance and lets eyeglass wearers see the entire field of view
Multi group lens combination to improve optical performance;the eyepieces sets delivers sharp images with good color correction and contrast

Why choose this product

Superior Optical Clarity for Stargazing

This SVBONY eyepiece features advanced multi-coated optics and edge-blackened elements to deliver exceptional sharpness, contrast, and color correction. The 66-degree ultra-wide field of view makes it easy to locate and observe celestial objects, from the Moon to distant nebulae. Its robust construction and comfortable eye relief ensure extended, enjoyable viewing sessions, bringing the cosmos closer with every use.

Ideal for Indian Skies, Who Should Consider

This eyepiece is excellent for amateur astronomers in India seeking detailed views of lunar features, star clusters, and nebulae. It's particularly suited for those with telescopes accepting a 1.25-inch barrel. Those who wear eyeglasses will appreciate the generous 16mm eye relief. Consider other focal lengths if you primarily observe very small, high-magnification planetary targets or extremely wide-field deep-sky objects.

How to use

Remove the lens cap from the eyepiece. Gently insert the 1.25-inch barrel into your telescope's focuser or diagonal. Secure it using the focuser's thumbscrew, ensuring it's snug but not overtightened. — Attach to Telescope
If you wear eyeglasses, extend the rubber eye guard by unscrewing it. Position your eye at the correct distance (about 16mm) from the eyepiece to see the full 66-degree field of view comfortably. — Adjust Eye Relief
Look through the eyepiece at your target celestial object. Slowly turn your telescope's focuser knob until the image appears sharp and clear. Adjust your position slightly to center the object within the wide field of view. — Focus and Observe
If desired, screw a standard 1.25-inch astronomy filter (like a moon filter or color filter) onto the threads at the bottom of the eyepiece barrel before inserting it into the focuser for enhanced viewing. — Add Filters (Optional)

Example scenarios

Typical situations where SVBONY 20mm Telescope Eyepiece | 66 Degree Ultra Wide Angle HD helps — illustrative scenarios, not customer reviews.

Scenario 1

Illustrative example

Where it helps

An amateur astronomer in Pune wants to observe the Moon and star clusters.

How this product helps

This SVBONY 20mm eyepiece provides a wide 66-degree field of view and sharp, high-contrast images, ideal for detailed lunar features and spotting star clusters. The 16mm eye relief ensures comfortable viewing even for eyeglass wearers, making extended observation sessions enjoyable.

Scenario 2

Illustrative example

Where it helps

A beginner astronomer in Kolkata needs a versatile eyepiece for general sky viewing.

How this product helps

With its 1.25-inch standard barrel and filter threads, this eyepiece is versatile. The 66-degree AFOV is excellent for finding targets and enjoying wider views of nebulae and galaxies, while the multi-coated optics ensure good clarity, making it a great all-around addition to a beginner's kit.

Technical specifications

Setup & usage

Compatible Telescope Barrel Size	1.25 inches (31.7 mm)
Recommended Use	Lunar observations, star clusters, nebulae, deep-sky targets
Eyeglass Wearer Compatibility	Yes, due to 16mm eye relief and collapsible rubber eye guard
Filter Compatibility	Yes, accepts standard 1.25-inch astronomy filters
Barlow Lens Compatibility	Yes, accepts standard 1.25-inch Barlow lenses
Cost per use	1 eyepiece at ₹4,921 — ₹4,921 per eyepiece
Shelf life after opening	12 months (category default for optical accessories)
Reapplication math	N/A (Durable item)
Contraindications	Telescopes not compatible with 1.25-inch eyepieces; users seeking extremely high magnification planetary views may prefer shorter focal length eyepieces.
Allergens / common irritants	None identified

How we compare

Feature	SVBONY 20mm Telescope	Others
Field of View	66 degrees ultra-wide	Typically 45-55 degrees for standard eyepieces
Optical Coating	Fully Multi Coated Broadband Green	Often single-coated or basic multi-coated
Eye Relief	16 mm (comfortable for eyeglass wearers)	Often 10-12 mm, less comfortable for glasses
Image Quality	Sharp images, good color correction, high contrast	May have lower contrast or color fringing
Cost per unit	1 eyepiece at ₹4,921 — ₹4,921 per eyepiece	Similar focal lengths may range from ₹1,500 - ₹4,000

SKU	qpj3060
GTIN	0602318837387
Brand	SVBONY
Model Name	F9157A
Model Number	FF9157D
Focal Length	20 mm (0.79 inches)
Barrel Size	1.25 inches (31.7 mm)
Apparent Field of View	66 degrees
Eye Relief	16 mm (0.63 inches)
Lens Material	Optical Glass Lenses
Coating	Fully Multi Coated Broadband Green
Lens Elements	5 elements in 3 groups
Filter Threads	Standard 1.25" filter thread
Weight	360 g (12.7 oz)
Dimensions (approx)	3.14 inches length x 1.57 inches width x 1.57 inches height
Country of Origin	Not stated by manufacturer — US retail version, sourced from authorized US retailers and authorized brand partners

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SVBONY 20mm Telescope Eyepiece | 66 Degree Ultra Wide Angle HD, 1.25 inch Barrel

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About this item

Key Features

Why choose this product

How to use

Example scenarios

Technical specifications

Setup & usage

How we compare

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