Description
The BRESSER Plössl 15 mm eyepiece is a classic 4-lens eyepiece with a standard 1.25" (31.7 mm) mounting diameter, designed to expand the magnification range of any astronomical telescope at an affordable price. Thanks to the Plössl scheme, it provides a sharp, high-contrast image, noticeably better than simple Kellner and Huygens eyepieces that are often included with budget telescopes. The 15 mm focal length provides medium magnification - universal for the Moon, planets, double stars and bright clusters. All lens surfaces have full multi-layered illumination, which removes parasitic glare and increases the brightness of the image. The all-metal housing without plastic ensures durability and stability of the optics. The foldable rubber eyecup cuts off side light and adds comfort, and the blackened inner tube increases contrast. The filter thread allows you to screw color and fog filters directly into the eyepiece. This is a simple and reliable modernization that immediately improves the quality of observations.
Magnification on typical telescopes (telescope focal length ÷ 15 mm)
On a 700 mm telescope — 47x (e.g. Venus 76/700, First Light, Junior series)
On a 900 mm telescope — 60x (Sirius 70/900, Taurus 90/900, AR-127L/900 if available)
On a 1000 mm telescope — 67x (Messier NT-150L/1000... i.e. NT-203/1000, AR-102/1000)
On a 1200 mm telescope — 80x (Messier NT-150L/1200, AR-127L/1200)
On a 1525 mm telescope — 102x (Messier 12" Dobson)
With a 2x Barlow lens, the magnification doubles (the eyepiece works like a 7.5mm), with a 3x it triples (like a 5mm), which gives additional working steps for planets.
Design features
- The 15 mm focal length is the average magnification on most telescopes. This is a universal “working” range between viewing and high magnification, convenient for detailing the Moon, planets, and resolving double stars. The eyepiece fills a gap in standard sets, where there are usually only very short and very long focal lengths. The user gets a comfortable intermediate magnification.
- The Ploszl scheme (4 lenses in 2 groups) is a classic symmetrical four-lens design that produces a sharp image with good correction of field aberrations. It provides noticeably higher quality than simple Kellner or Huygens glasses from budget sets. The image remains sharp almost to the edge of the field of view. The user immediately sees the difference in detail and contrast.
- Fully multi-coated — all air surfaces of all lenses are multi-coated. They minimize light reflection and ghosting inside the eyepiece. This allows more light to pass through the eyepiece, increasing contrast and brightness. The user gets a clearer image without haze around bright objects.
- The visible field of view of 50° is the angular size of the image that the eye sees through the eyepiece. For the Ploszl scheme, this is a classic comfortable field, giving the feeling of a “window” into the sky. It is enough to view the entire Moon and fit clusters into the frame. The user gets a balanced field without distortion at the edges.
- All-metal body — both the body and the inner tube are made entirely of metal, without plastic. This increases strength, durability, and stability of the lens position. Metal also holds its shape better during temperature changes during night observations. The user receives a reliable accessory that will serve for years.
- The foldable rubber eyecup is a soft rim around the eyepiece that folds back when needed. It cuts off side glare from flashlights and headlights, increasing contrast. The foldable design is convenient for both observation without glasses and with glasses. The user observes comfortably and...
