Barlow Lens Binorum Optima Achro 3x 1.25″ T2
Triple Your Telescope's Power
Imagine instantly tripling the magnification of every eyepiece you own - that's exactly what the Binorum Optima Achro 3x Barlow lens delivers. This simple yet powerful accessory transforms your telescope's capabilities, letting you reach higher magnifications for detailed planetary observation without investing in multiple expensive eyepieces.
How It Works
Using a Barlow lens is straightforward, even for beginners. Simply insert your favorite 1.25″ eyepiece into the Barlow and secure it with the side thumbscrew. Then slide the entire assembly into your telescope's focuser just like you would a regular eyepiece. The result? Your 10mm eyepiece now performs like a 3.3mm eyepiece, your 20mm like a 6.7mm - instantly expanding your magnification options.
Dual-Purpose Design
What makes this Barlow lens truly versatile is its dual functionality. On the eyepiece side, it accepts standard 1.25″ eyepieces for visual observation. But flip it around, and you'll find a T2 thread for astrophotography - simply attach your camera using the appropriate T-ring adapter (sold separately), and you're ready to capture stunning images of the Moon, planets, and more with increased magnification.
Achromatic Quality
The achromatic optical design minimizes color fringing (chromatic aberration), ensuring your views remain sharp and true to color. This two-element design strikes an excellent balance between optical quality and affordability, making it ideal for both visual observers and astrophotographers who want reliable performance without breaking the bank.
Technical Specifications
- Magnification factor: 3x
- Optical design: Achromatic doublet
- Barrel diameter: 1.25″ (31.7 mm)
- Eyepiece side: Accepts 1.25″ eyepieces with thumbscrew lock
- Camera side: T2 thread (M42 × 0.75)
- Compatible with: All telescopes with 1.25″ focuser
Perfect For
- Planetary observation requiring high magnification
- Lunar detail photography and visual study
- Double star separation
- Astrophotography through the eyepiece projection method
- Extending your eyepiece collection economically
Smart Investment for Your Setup
Instead of purchasing multiple short focal length eyepieces (which can be expensive and have very short eye relief), a quality Barlow lens multiplies the versatility of the eyepieces you already own. For the cost of a single eyepiece, you effectively triple your magnification options across your entire collection.
Binorum Optima Series
The Binorum Optima series represents carefully engineered telescope accessories that deliver solid optical performance at accessible prices. Whether you're a visual observer looking to explore planetary details or an astrophotographer capturing your first images of Saturn's rings, the Optima Achro 3x Barlow provides the quality and versatility you need.
