DeltaOptical ED 3x 1.25″ Barlow Lens
Premium ED Glass Construction for Superior Performance
The high-quality Barlow lens 3x manufactured by GSO specifically for Delta Optical represents a top-tier solution for extending the focal length of telescopes. This is a two-element lens made from special extra-low dispersion (ED) glass, which significantly improves image quality, sharpness, and chromatic aberration correction to an exceptionally high level.
Precision Engineering and Build Quality
The lens body is manufactured in a solid and aesthetic way using CNC technology, ensuring precision and long-lasting durability. The lower part containing the optics can be unscrewed and attached directly to the threaded filter of any standard 1.25″ eyepiece. The Barlow lens 3x ED is ideal for both visual observation and photography of bright solar system objects.
Advanced Optical Features
The 24mm active aperture makes this lens one of the few Barlow lenses that allow the connection of filters in the 1.25″ standard. The optical element can be unscrewed, and the upper part of the housing can be used as an extension tube for the 1.25″ standard with a length of 79mm, providing additional possibilities when assembling optical configurations.
Versatile Product Line
In the series with standard glass, you'll find Barlow lenses providing magnification of 2x, 2.5x, and 5x - all in 1.25″ standard. The range also includes Barlow lenses made from ED glass with low dispersions providing magnification of 2x (with 2″ housing) and 3x (with 1.25″ housing), which represent the pinnacle in this category of astronomical accessories.
Key Benefits and Applications
- ED glass construction for minimal chromatic aberration
- 3x magnification factor for detailed planetary observation
- CNC-machined housing for precision and durability
- Compatible with 1.25″ eyepieces and filter threads
- Separable optical element for versatile use
- 79mm extension tube functionality
- Ideal for lunar and planetary photography
- Professional-grade optical performance
Technical Specifications
- Magnification: 3x
- Barrel size: 1.25″ (31.7mm)
- Active aperture: 24mm
- Glass type: Extra-low dispersion (ED)
- Optical design: Two-element construction
- Extension tube length: 79mm
- Filter thread compatibility: 1.25″ standard
- Manufacturing: CNC precision machined
Perfect for Planetary Observation
Thanks to the use of ED glass, you'll achieve significantly better contrast, sharpness, and minimization of color fringing, which is particularly important when observing planets and the moon. Quality CNC machining ensures precise tolerances and long-term reliability during frequent use.
Who Should Choose This Barlow Lens
This premium Barlow lens is perfect for:
- Serious amateur astronomers seeking superior image quality
- Planetary and lunar observation enthusiasts
- Astrophotographers working with bright solar system objects
- Observatory operators requiring reliable, professional equipment
- Educational institutions teaching astronomy
- Anyone wanting to maximize their telescope's versatility
What Makes ED Glass Special
Extra-low dispersion glass is specially formulated to minimize chromatic aberration - the tendency for different colors of light to focus at slightly different points. This results in sharper, higher-contrast images with reduced color fringing around bright objects like planets and stars. The investment in ED glass technology pays dividends in improved observational experience and photographic results.
