TS Optics Barlow Lens 2,5x 2" (58520)

The TS Optics Barlow Lens 2.5x 2" is a premium optical accessory designed to increase the magnification of your 2" or 1.25" eyepieces by a factor of 2.5x. Featuring a high-quality 4-element telecentric design, this Barlow lens delivers optimal brightness, high contrast, and natural color reproduction. Its fully multi-coated optics ensure sharp, clear images across the entire field, even with fast telescopes such as f/4 Newtonians. The robust construction includes a solid aluminum cell and effective internal blackening to minimize reflections, making it suitable for both visual and photographic use.

TS Optics is a brand of Teleskop-Service, known for producing high-quality astronomical accessories. This Barlow lens is a reliable choice for anyone seeking increased magnification and superior optical performance for both visual observation and astrophotography.

Key Features

• Magnification factor: 2.5x

• Connection to telescope: 2"

• Connection to eyepiece: 2" (with 2" to 1.25" adaptor included)

• Number of lenses: 4 (telecentric design)

• Optical coatings: Fully multi-coated for maximum light transmission and contrast

• Solid aluminum housing for durability

• Internal blackening to reduce stray light and reflections

• Brass ring clamp for secure eyepiece attachment

Advantages of Telecentric Design

• Magnification factor remains constant, even if accessories like filter drawers or double polarizing filters are placed between the lens and eyepiece.

• Does not extend the eye relief of connected eyepieces, making it comfortable to use with long focal length eyepieces that already have generous eye relief.

• Provides high sharpness both on-axis and at the field edge, making it ideal for use with full-frame sensors and wide-field imaging.

General Information

• Type: Barlow & Erecting Lenses

• Build: Barlow lens

• Length: 93 mm

• Weight: 312 g