astronomy

Takahashi Seisakusho

Takahashi Seisakusho is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Takahashi Seisakusho rather than just read about it. In short: Takahashi Seisakusho Ltd. (株式会社高橋製作所) is a Japanese manufacturer of telescopes and related equipment (such as eyepieces and equatorial mounts) founded in 1932 by Kitaro Takahashi in Tokyo.

Key takeaways

Takahashi Seisakusho belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Takahashi Seisakusho to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Takahashi Seisakusho from memory before moving on to harder problems.

Reference excerpt

Takahashi Seisakusho Ltd. (株式会社高橋製作所) is a Japanese manufacturer of telescopes and related equipment (such as eyepieces and equatorial mounts) founded in 1932 by Kitaro Takahashi in Tokyo. Originally started as a foundry, Takahashi began manufacturing optical equipment after WWII in 1946. Often known simply as 'Tak', the brand is especially noted amongst amateur astronomers for its range of apochromatic refractors, but also produces various types of reflectors, and instruments featuring compound optics. All Takahashi telescopes and mounts are made in Japan using traditional manufacturing methods, such as sand casting, with nearly all parts made in-house. Takahashi pioneered the use of fluorite crystal in place of one of the glass elements in the objective lens of an astronomical telescope, although this material had previously been used in other optical devices. The company's name would become synonymous with the use of this type of crystal. In recent years however, Takahashi has produced some telescopes using extra-low dispersion ("ED") FPL-53 glass in place of fluorite in the objective lens. High-performance glass that contains fluorine should not be confused with fluorite crystal, which is not glass. Some other telescope manufacturers use Takahashi refractors as collimating instruments for larger telescopes. Takahashi telescopes of various designs and sizes are installed in major observatories, such as Embry-Riddle Observatory, Hoober Observatory, Mirasteilas Observatory, Vega–Bray Observatory and others.

References

External links Takahashi Seisakusho website. (Japanese language only.) Takahashi America Takahashi Europe. (English and French language.)

Illustrations

Worked examples

Example 1 — a first encounter with Takahashi Seisakusho

Start with the simplest possible case. Write down what Takahashi Seisakusho claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Takahashi Seisakusho before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Takahashi Seisakusho ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Takahashi Seisakusho

In research: Takahashi Seisakusho appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Takahashi Seisakusho in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Takahashi Seisakusho is common in secondary-school and first-year university syllabi. It links to neighbouring topics Japanese brands, Japanese company stubs, Telescope manufacturers, so understanding it makes those chapters shorter.
In everyday life: Look for Takahashi Seisakusho outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Takahashi Seisakusho in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Takahashi Seisakusho means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Takahashi Seisakusho out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Takahashi Seisakusho in simple terms?

Why does Takahashi Seisakusho matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Takahashi Seisakusho?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Takahashi Seisakusho.