25mm Telescope Eyepiece, Large Aperture Eyepiece, 40 Degree Field of View Plossl Eyepiece with Filter Threaded for Observing Moon Planetary Binary

The SVBONY 40mm Plössl eyepiece is a fantastic addition to any telescope setup, especially if you enjoy wide-field viewing. It delivers a bright, clear image with a noticeably larger field of view, making it perfect for scanning the night sky, star clusters, and larger deep-sky objects. The fully multi-coated optics really make a difference—images appear sharp with good contrast, and light transmission is impressive for an eyepiece in this price range. It performs especially well under darker skies where you can take full advantage of the wide view. Build quality is solid, with a nice all-metal construction that feels durable and well-made. The eyepiece has a good weight to it without being too heavy, and it fits securely in a standard 1.25” focuser. Eye relief is comfortable, which makes longer observing sessions much more enjoyable, even for beginners. It’s also a great choice if you wear glasses. Overall, this is an excellent budget-friendly upgrade that significantly enhances your viewing experience.

Impressive quality as to materials and build. Solid metal and multi-coated glass. Blackened internally to reduce stray light reflections. I have yet to view through it in the field, but am very confident that I will be very pleased, based on a thorough review by my highly trusted and very reliable YouTube reviewer, Jason of Small Optics. I purchased a second one for my neighbors, who are giving their young daughters a Celestron beginners' refractor telescope for Christmas 2023. A 40mm eyepiece is a great tool to be used with the stock eyepieces of any beginner scope or with more advanced scopes, as it provides a wider view of the sky. That wider view enables one to be well-oriented as to where to look and move the scope for bringing desired viewing targets into the center of the telescope's view. Then, one can simply lock the scope to that position, then replace the 40mm eyepiece with a 25mm, 10mm, etc. for greater magnification of the desired target, loosen locks of telescope, and off to viewing the target close up with the more powerful stock eyepiece. Alternatively, the 40mm can help provide beautiful sweeping vistas for those who enjoy simply scanning the night sky full of many more beautiful stars, planets, and clusters, etc. than the naked human eye can ever detect.

I didn't pay very much for this eyepiece, so I was really surprised to see how good it was for the money. I bought it primarily for stargazing. I wanted to bring the power on my 70mm Celestron spotting scope down to 10X (the longest focal length stock eyepiece it came with was 20mm, or 20X). This eyepiece produces a clear, sharp edge-to-edge image of stars, with no signs of optical aberrations. I tested it during the day for terrestrial viewing and found it to produce a sharp image as well. I'm also really pleased with the wide field of view. Good eyepiece!

Purchased this for a 4 inch Dobsonian. Great view out of an old reflector. Not quite as good as a Televue in my 8 inch Meade, but it's hard to tell the difference unless you know what to look for. This is a great eyepiece and I don't have to worry about the kids dropping a high dollar eyepiece. Would recommend these and would buy again.

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.

Nice lens

Although inexpensive seems like high quality. Good optics. Clear. Sharp. A good utility lens.

Excellent item

Un ocular de buena construcción, sólido, ofrece vistas brillantes y generoso campo de visión, puede ser útil para quien use gafas pues tiene suficiente alivio. Muy útil. Tal vez el único "pero" es que, su angulo de visión al eje óptico, aunque suficiente, es algo delicado, esto es que si no estas bien alineado ojo-ocular se produce una sombra (kidney beaning). No es un problema por que así son los Plossls. Finalmente es un sobresaliente relación calidad-precio, si lo recomiendo.

Good product but not much useful in 1.25 inch barrel...because it can't show wider field then 32 mm due to limit of it's barrel

The 25mm eyepiece magnifies too much for Pleaides, which touches the perimeter of the field of view for my 10" Newtonian telescope. This 40mm eyepiece is better for magnification of larger fields of view. Nearby Jupiter and 4 of its moons are a great deal less across and need the 25mm because the 40mm isn't enough.