From the renowned brand Baader Planetarium comes the innovative 31mm Hyperion Aspheric Eyepiece, a high-quality, durable piece of astronomy equipment. This advanced eyepiece is one of the first in the world to incorporate cutting-edge aspheric surface technology. This innovative design allows for the elimination of eyepiece aberrations without the need for extra lens elements, excessive size, weight, or higher costs, making it a versatile choice for astronomy enthusiasts.The Hyperion Aspheric Eyepiece boasts a clever design that includes 2" x 24 tpi SCT threads for attaching the 2" barrel. This unique feature allows the eyepiece to directly thread onto the rear cell of popular Schmidt-Cassegrain Telescopes (SCTs), resulting in unparalleled rigidity, which is crucial for high-quality imaging.This eyepiece comes with two barrel sizes, providing flexibility for different viewing requirements. The standard 2" barrel delivers a full 72-degree field of view, while a special wide field 1-1/4" barrel offers the maximum true field in this barrel size, with a field stop of 1.265" (32 mm). This makes it perfect for extracting every bit of field possible in 1.25" focusers or binocular viewers.Whether you're observing stars, planets, or deep sky objects, the 31mm Hyperion Aspheric Eyepiece is designed to provide a wide field of view and high contrast images, enhancing your celestial viewing experience.