About This Excellent Optical System: Designed primarily for planetary observation and great for deep sky objects too; aluminum material is used to make it last longer; a cost-effective eyepiece; it is also an excellent choice for birthdays and Christmas gifts Elaborate Detailed Design: Equipped with an rotated eyepiece barrel and a convertible rubber eyecup for preventing stray light entering from the side; The edges of the lenses are blackened and the internal structure is treated to eliminate stray light Standard 1.25 Inch Barrel and Thread: Compatible with any telescope equipped with 1.25 inch focuser and the 1.25 inch female thread can also be connected with 1.25 inch telescope filter or other 1.25 inch telescope accessories Wider 58 Degree Field of View: Comfortable eye relief averaging 16 mm across the series and focal lengths is between 2.5 mm to 25 mm; giving maximum detail and definition across the entire 58 degree field of view Multi-coated Lense Design: Each eyepiece has 5 lens elements in 3 groups; with retaining high transmittance and contrast ratio with least lateral cchromatic aberration and scattering phenomenon; having a wide view Overview Brand : Astromania Focal Length Description : 2.5 millimeters Lens Type : Standard Compatible Mountings : No Camera Lens Description : Astromania 1.25" 2.5mm 58-Degree Planetary Eyepiece for Telescope: A fully multi-coated eyepiece with 5 elements in 3 groups, offering a 58-degree field of view and a focal length of 2.5mm. Designed primarily for planetary observation, it features an excellent optical system, elaborate detailed design, and a standard 1.25 inch barrel and thread, making it compatible with most telescopes. The eyepiece is also equipped with a rotated eyepiece barrel and a convertible rubber eyecup to prevent stray light, and the edges of the lenses are blackened to eliminate stray light further. This eyepiece is an excellent choice for both planetary and deep sky observation, offering maximum detail and definition across the entire field of view. Astromania 1.25" 2.5mm 58-Degree Planetary Eyepiece for Telescope: A fully multi-coated eyepiece with 5 elements in 3 groups, offering a 58-degree field of view and a focal length of 2.5mm. Designed primarily for planetary… See more
