astronomy

Ludwig Schupmann

Ludwig Schupmann 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 Ludwig Schupmann rather than just read about it. In short: Ludwig Ignaz Schupmann (23 January 1851 in Geseke (Westphalia), Kingdom of Prussia – 2 October 1920 also in Geseke) was a German professor of architecture and an optical designer. He is principally remembered today for his Medial and Brachymedial telescopes, types of catadioptric reflecting-refracting telescopes with Mangin mirrors that eliminate chromatic aberrations while using common optical glasses.

Key takeaways

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

Reference excerpt

Ludwig Ignaz Schupmann (23 January 1851 in Geseke (Westphalia), Kingdom of Prussia – 2 October 1920 also in Geseke) was a German professor of architecture and an optical designer. He is principally remembered today for his Medial and Brachymedial telescopes, types of catadioptric reflecting-refracting telescopes with Mangin mirrors that eliminate chromatic aberrations while using common optical glasses. Used in early lunar studies, they are used now in double-star work.

Schupmann candelabra (a special street light) In 1882, electric street lighting was put into operation in the center of the city of Berlin (Potsdamer Platz and Leipziger Straße) for which the company Siemens & Halske supplied a total of 36 carbon arc lamps. Schupmann also invented an achromatic lens design using only a single type of glass. The Schupmann dialyte design is highly corrected but limited to long f#'s. In November 1887, the city of Berlin announced a competition for the design of richly decorated arc lamp candelabras for the boulevard Unter den Linden, which was won by Ludwig Schupmann. A total of 104 lamps with a light point height of 8 metres were built according to this design and installed in Berlin in 1888 (on Unter den Linden, Pariser Platz, Opernplatz and Kaiser-Wilhelm-Straße). Only later, they were named after their creator as Schupmann candelabras. Before the 1936 Olympic Games, the Schupmann candelabras on the Unter den Linden-boulevard were replaced by so-called Biedermeier Lamps.

Medial Telescopes Schupmann drafted four types of hybrid telescope made out of lenses and mirrors. He called this "mixed" technology "medial telescope" (from Latin "medium", middle). In the first booklet published in 1899, he presented two types of "medial telescopes" and two variants with shorted tube lengths. The latter were called "brachymedial telescopes" by him. He created the word from the Greek βραχύς (brachys) for "short", so a "brachymedial" for him is a "shortened medial" or "shortened hybrid" telescope.

Honor The asteroid 5779 Schupmann is named in his honour.†

Works Die Medial-Fernrohre - Eine neue Konstruktion für große astronomische Instrumente, Teubner-Verlag, 1899

References

External links Ludwig Schupmann and some Early Medial Telescopes

Illustrations

Worked examples

Example 1 — a first encounter with Ludwig Schupmann

Start with the simplest possible case. Write down what Ludwig Schupmann 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 Ludwig Schupmann 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 Ludwig Schupmann 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 Ludwig Schupmann

In research: Ludwig Schupmann 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 Ludwig Schupmann 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: Ludwig Schupmann is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1851 births, 1920 deaths, Architects from North Rhine-Westphalia, so understanding it makes those chapters shorter.
In everyday life: Look for Ludwig Schupmann 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 Ludwig Schupmann in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Ludwig Schupmann 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 Ludwig Schupmann out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Ludwig Schupmann in simple terms?

Why does Ludwig Schupmann 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 Ludwig Schupmann?

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 Ludwig Schupmann.