Star-Finder 2102-D — Weems & Plath

🌌 Celestial Navigation • Star Identification • A Classic Non-Electronic Instrument

The Star-Finder 2102-D by Weems & Plath is a brilliantly simple celestial navigation tool that turns the night sky into a readable, logical map. Designed for mariners, aviators, students, and serious stargazers, it allows you to compute the approximate altitude and bearing (azimuth) of stars and planets—anywhere on Earth—with accuracy sufficient for identification and planning celestial sights.

Lightweight, durable, and completely non-electronic, the Star-Finder is both a practical navigation aid and an educational gateway into understanding the mechanics of the heavens.

🌟 What the Star-Finder 2102-D Does

At its core, the Star-Finder is a graphical calculator. By aligning time, date, and latitude, it shows you:

• Which navigational stars should be visible

• Their approximate altitude above the horizon

• Their bearing around the horizon

This makes it invaluable for:

• Identifying stars and planets

• Planning sextant sights

• Understanding celestial geometry

• Teaching and learning traditional navigation

Think of it as a manual, pocket-sized planetarium—designed for real navigation, not just curiosity.

🧭 Why the Star-Finder 2102-D Is So Valuable

🌍 Works Anywhere on Earth

• Designed for use at any latitude, north or south

• Includes interchangeable templates covering both hemispheres

• Aligns with data from nautical and air almanacs

Whether you’re in the tropics or high latitudes, the Star-Finder adapts to your position.

🔭 Identifies Stars & Planets with Confidence

• Covers the 57 primary navigational stars used in standard almanacs

• Helps distinguish between stars, planets, and background sky

• Ideal when you know where to look, but not what you’re seeing

For learners especially, this removes one of the biggest barriers to celestial navigation.

📐 Graphical Altitude & Azimuth Calculation

• Displays star positions to within a few degrees of accuracy

• More than sufficient for:

  • Star identification

  • Sextant sight planning

  • Instruction and training

• Reduces complex spherical trigonometry to an intuitive visual process

It doesn’t replace full sight reduction—it supports and simplifies it.

🛠️ Simple, Robust & Battery-Free

• Made from durable plastic, ideal for onboard or field use

• No batteries, electronics, or calibration required

• Always ready—day after day, year after year

In an emergency or power-down scenario, it keeps working.

📦 What’s Included

• Star-Finder 2102-D instrument

• Latitude templates for global use

• Protective storage case for transport and longevity

(Instructional booklets are available separately for deeper study.)

📐 Specifications (Typical)

• 🌌 Coverage: 57 primary navigation stars

• 📍 Output: Approximate altitude & azimuth

• 🌍 Use: Any latitude, worldwide

• 🛠️ Material: Durable plastic

• 🔋 Power: None required

• 📦 Includes: Protective case

🎯 Who It’s For

• ⚓ Celestial navigators & offshore sailors — plan and identify stars before taking sights

• 🧭 Navigation students & instructors — a superb teaching and learning aid

• ✈️ Aviators & air-nav enthusiasts — classic air navigation heritage tool

• 🌌 Amateur astronomers & stargazers — understand what you’re seeing in the sky

• 🎁 Maritime gift buyers — a meaningful, intellectually rich navigation gift

⭐ Why Choose Weems & Plath?

For more than a century, Weems & Plath has been synonymous with precision navigation instruments—tools trusted by professionals, educators, and explorers worldwide. The Star-Finder reflects that legacy: simple, durable, and intellectually elegant.

It doesn’t just give answers—it teaches understanding.

Read the sky with confidence

Add the Weems & Plath Star-Finder 2102-D to your navigation kit and unlock the logic behind the stars—anywhere on Earth, any clear night.
Add to cart and bring celestial navigation within reach.