Sextant Astra IIIB - Allview
€1,017.90
Tax included
Achieve pinpoint accuracy (±20") with this durable aluminum sextant. Features a full-view horizon mirror, LED-lit arc, and 3.5x40 telescope for reliable celestial navigation, day or night.
SEX0025
Data sheet
- Picto
- Made in the USA
Specific References
- UPC
- 400000176635
- EAN13
- 4000000170303
New
Description détaillée
Sextant Astra IIIB Allview
Precision Navigation at Your Fingertips
Discover the Sextant Astra IIIB Allview, a game-changer in celestial navigation. Designed for both seasoned mariners and aspiring navigators, this sextant combines affordability with unmatched precision. Whether you're plotting a course across the open ocean or honing your navigation skills, this instrument delivers reliability and accuracy when it counts the most.
Unmatched Optics and Ease of Use
Equipped with a full-view horizon mirror (Allview), this sextant ensures crystal-clear visibility of celestial bodies and the horizon simultaneously. The rectangular index mirror (56 x 42 mm) enhances accuracy, while the LED illumination on the arc and micrometer drum guarantees readability in low-light conditions. The standard 3.5x40 telescope provides a sharp, magnified view, making it easier than ever to take precise measurements. With a precision of ±20" across the entire arc (-5° to +130°), you can trust this sextant to guide you with confidence.
Built for Durability and Comfort
Crafted from lightweight, corrosion-resistant aluminum alloy, the Astra IIIB Allview is designed to withstand the harshest marine environments. Weighing just 1.2 kg (2 lb., 10 oz.), it strikes the perfect balance between sturdiness and portability. Its ergonomic design ensures a comfortable grip, reducing fatigue during extended use. Whether you're a beginner or a professional, this sextant is engineered to meet your needs.
Trusted by Thousands of Navigators
With over 24,000 units sold in the United States in recent years, the Astra IIIB Allview has earned its reputation as a trusted companion for sailors worldwide. Produced to the highest standards, it comes complete with a varnished wooden case, instructions, a precision certificate, and an adjustment key. For added versatility, optional accessories like a 7x35 telescope, rubber eyepiece, and bubble horizon are available to tailor the sextant to your specific needs.
Versatile and Customizable
The Astra IIIB Allview offers unparalleled flexibility with its interchangeable mirrors. Switch between a split (half-silvered) or full (entire) horizon mirror in seconds, adapting to your preferred navigation style. The Fresnel diffraction pattern testing method ensures the mirrors and shade glasses meet the highest standards of flatness, guaranteeing consistent performance. Whether you're navigating by the stars or the sun, this sextant is ready for the challenge.
Master the Art of Celestial Navigation with the Astra IIIB Allview Sextant
Step into the world of traditional navigation with a modern twist. The Astra IIIB Allview sextant is engineered to deliver precision, durability, and ease of use, making it the ideal choice for mariners who demand the best. Whether you're a professional navigator or an enthusiast, this sextant empowers you to chart your course with confidence, no matter where your journey takes you.
Optical Excellence for Unmatched Accuracy
At the heart of the Astra IIIB Allview is its superior optical system. The full-view horizon mirror (Allview) allows you to see both the celestial body and the horizon simultaneously, eliminating the guesswork from your measurements. The rectangular index mirror (56 x 42 mm) ensures a wide field of view, while the 3.5x40 standard telescope provides a clear, magnified image. With a precision of ±20" across its entire arc (-5° to +130°), this sextant delivers consistent results, even in challenging conditions. The LED illumination on the arc and micrometer drum ensures readability in low-light situations, so you can navigate with confidence day or night.
Lightweight and Built to Last
Constructed from high-quality, corrosion-resistant aluminum alloy, the Astra IIIB Allview is designed to endure the rigors of life at sea. Weighing just 1.2 kg (2 lb., 10 oz.), it is lightweight yet robust, making it easy to handle without sacrificing durability. The sextant's ergonomic design ensures a comfortable grip, reducing strain during extended use. Whether you're navigating rough waters or calm seas, this sextant is built to perform.
A Proven Choice for Navigators Worldwide
With over 24,000 units sold in the United States alone, the Astra IIIB Allview has become a staple in the maritime community. Its reputation for reliability and precision has made it a favorite among sailors, from beginners to seasoned professionals. Each sextant is meticulously crafted and tested to ensure it meets the highest standards of quality. It comes complete with a varnished wooden case, instructions, a precision certificate, and an adjustment key, providing everything you need to start navigating with confidence.
Customizable to Suit Your Needs
The Astra IIIB Allview is designed with versatility in mind. Its interchangeable mirrors allow you to switch between a split (half-silvered) or full (entire) horizon mirror, depending on your preference. The Fresnel diffraction pattern testing method ensures that every mirror and shade glass meets strict flatness standards, guaranteeing optimal performance. Optional accessories, such as a 7x35 telescope, rubber eyepiece, and bubble horizon, further enhance the sextant's functionality, making it adaptable to a wide range of navigation scenarios.
The Astra IIIB Allview sextant is engineered for precision and durability. Crafted from lightweight, corrosion-resistant aluminum alloy, it features a -5° to +130° arc with a 153 mm radius, ensuring accurate measurements across a wide range. The micrometer drum offers a 1' scale with a vernier reading to 0.1', while the 51 mm horizon mirror and 56 x 42 mm rectangular index mirror provide a clear, unobstructed view. With four index and three horizon shades, you can adjust the lighting to suit any condition. The sextant includes LED illumination on the arc and drum, powered by two AA batteries, and comes with a 3.5x40 standard telescope. Weighing just 2 lb., 10 oz., it is both portable and sturdy, making it ideal for all navigational needs.
- Experience the perfect blend of precision, durability, and affordability with the Astra IIIB Allview sextant.
- Its full-view horizon mirror and rectangular index mirror ensure unmatched optical clarity, while the LED illumination guarantees readability in any lighting condition.
- Lightweight yet robust, this sextant is built to withstand the harshest marine environments.
- With over 24,000 units sold, it has earned the trust of navigators worldwide.
- Customizable with interchangeable mirrors and optional accessories, it adapts to your unique navigation style.
- Whether you're a beginner or a professional, the Astra IIIB Allview is your reliable companion for celestial navigation.
What is the weight of the sextant including the case?
The sextant itself weighs approximately 2 lb., 10 oz. (1.2 kg). The wooden case dimensions are 6.5 x 13 x 11 inches, but its exact weight is not specified.
Can the LED lighting be used in complete darkness?
Yes, the LED lighting illuminates the arc and micrometer drum, making it usable in low-light conditions, including near-complete darkness. It is powered by 2 AA batteries.
What is the method used to test the flatness of the mirrors?
The mirrors are tested using the Fresnel diffraction pattern method, ensuring perfect flatness for both the mirrors and shade glasses.
Is the telescope magnification adjustable?
No, the standard telescope has a fixed magnification of 3.5x40. However, a 7x35 telescope is available as an optional upgrade.
What is the range of the arc in degrees?
The arc ranges from -5° to +130°, with a radius of 153 mm, providing a wide measurement range for celestial navigation.
Are the mirrors interchangeable between different sextant models?
The mirrors are designed to be quickly interchangeable on this model, but compatibility with other sextant models is not guaranteed.
What type of batteries are required for the LED lighting?
The LED lighting is powered by 2 standard AA batteries, which are not included with the sextant.
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