SVBONY Telescope Eyepiece 15mm Bundle with Eyepiece 6mm 9mm, 66 Degree Ultra Wide Angle Eyepiece, 1.25 inches Telescope Accessories for Astronomical Observation

15mm focus length.15mm is a intermediate eyepiece fit for observing the lunar surface planets binaries and bright nebula interior. 4 Lenses in 3 Groups: Multiple group lens combination to improve optical performance; the eyepieces delivers sharp images with good color correction and contrast. 16mm eye relief: Generous 16mm eye relief allows comfortable viewing distance and lets eyeglass wearers see the entire field of view. 6mm focal length; high magnification detailed observation; 6mm eyepiece can reveal intricate features such as surface detail on the Moon; cloud bands on Jupiter; or the rings of Saturn. 9mm focal length and 66 degree ultra wide angle provide an amazing magnification and broad vision,perfect for lunar observations,medium sized star clusters, especially for deep sky targets. 6 Lenses in 4 Groups:Multiple group lens combination to improve optical performance, and delivers sharp images with good color correction and contrast; --Blackened lens edges and internally blackened eyepiece barrel to avoid internal reflection and provide a crisp image.

• 15mm eyepiece; medium magnification focal length; Ideal for viewing large deep sky objects in medium to short focal length telescopes; and also ideal for viewing lunar and planetary details in medium to long focal length telescopes
• 6mm focal length; high magnification detailed observation; 6mm eyepiece can reveal intricate features such as surface detail on the Moon; cloud bands on Jupiter; or the rings of Saturn
• 9mm telescope eyepiece; 9mm provides high magnification; enjoy the lunar craters and lunar seas up close; analyze more planetary details such as Saturn's rings; also used to resolve double stars; showing their separation and colors
• 66 degree field of view; provides a wide field of view; 66° wide-angle eyepiece is especially useful for locating celestial objects; appreciating star fields; and observing larger deep-sky targets like nebulae and star clusters
• FMC coating; the multiple layers of anti-reflective coating significantly reduce reflections and glare on the glass surfaces; improve light transmittance; help maintain the brightness of celestial bodies; enhance contrast and color fidelity in observed images