SVBONY · Eyepiece
SVBONY Plossl 40mm
Affordable 40mm Plossl for wide-field views, built to last and easy on the wallet at under $17
Performance Scores
Overview
The SVBONY 40mm Plossl is a straightforward, budget-friendly eyepiece that fills a useful role in any starter kit. At 40mm focal length, it delivers your lowest magnification option on most telescopes, which means wider fields of view and brighter images. That makes it genuinely well-suited for sweeping across the Moon, framing open clusters like the Pleiades or the Beehive, and picking out large, diffuse nebulae such as the Orion Nebula or Andromeda Galaxy.
The 40-degree apparent field of view is on the narrower side compared to premium wide-angle designs, so do not expect the immersive "spacewalk" effect of a 68 or 82-degree eyepiece. However, for the price, the fully multi-coated optics deliver respectable contrast and color accuracy. Planetary detail will be limited primarily by your telescope and seeing conditions, not this eyepiece.
The all-metal barrel, foldable rubber eye guard, and included plastic case make this feel more durable than the price suggests. The M28.5 filter thread accepts standard 1.25-inch filters, adding useful versatility. With over 1,000 Amazon reviews averaging 4.6 out of 5, it has a solid real-world track record for beginners.
At a Glance
40mm
Focal Length
Specifications
Key Features
- 40mm focal length provides your widest, lowest-magnification view for a given telescope, ideal for large targets
- Fully multi-coated 4-element optics improve light transmission and reduce glare compared to single-coated alternatives
- Foldable rubber eye guard accommodates eyeglass wearers comfortably and blocks stray light
- Standard 1.25-inch barrel fits the vast majority of beginner and mid-range telescopes
- M28.5 filter thread allows direct attachment of 1.25-inch filters without additional adapters
- All-metal construction and included plastic storage case add durability and portability at a budget price point
- 40-degree apparent field of view is functional but narrower than premium wide-angle eyepieces, worth noting before buying
Customer Reviews
1,105 reviews
nice and clear. wider angle makes a clearer image
A million times better than the pack-in lens with my scope. Worth every penny
I'm just a rookie so my review must be taken according. I do like the wider angle of the 40mm eyepiece for certain viewing conditions. Materials seem like decent quality.