astronomy

Toulouse Observatory

Toulouse Observatory 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 Toulouse Observatory rather than just read about it. In short: The Toulouse Observatory (French: Observatoire de Toulouse) is located in Toulouse, France and was established in 1733. It was founded by l'Académie des Sciences, Inscriptions et Belles-Lettres de Toulouse ("Academy of Science, Inscriptions and the Humanities of Toulouse").

Key takeaways

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

Reference excerpt

The Toulouse Observatory (French: Observatoire de Toulouse) is located in Toulouse, France and was established in 1733. It was founded by l'Académie des Sciences, Inscriptions et Belles-Lettres de Toulouse ("Academy of Science, Inscriptions and the Humanities of Toulouse"). It was moved 1841 and again in 1981. In 1987, Genevieve Soucail of the Toulouse Observatory and her collaborators presented data of a blue ring-like structure in Abell 370 and proposed a gravitational lensing interpretation In the 1990s the observatory worked on MEGACAM with several other institutions.

People & Directors The observatory was started by Garipuy in the 1730s with support from the Academy of Sciences. Félix Tisserand was a famous director from 1873 to 1878. He published Recueil d'exercices sur le calcul infinitesimal as well as making several expeditions, including an 1874 trip to Japan. Henri Joseph Anastase Perrotin was Tisserand's assistant astronomer, and they both went to the Paris Observatory in 1878. Tisserand was succeeded by Benjamin Baillaud.

History & Telescopes

The observatory was originally founded in 1733. Launch instruments at the observatory included two refractors and 28 inch quadrant, and one clock. By 1840 and additional clock by Julien le Roi of Paris was added. Among the early observations at the observatory were the 1736 and 1743 transits of Mercury. These observations were conducted by Garipuy, who also observed the transit of Mercury in 1753. Garipuy also built and observatory in his house and conducted observations from there. By 1770 a new larger observatory was established and again in the 1840s. In 1871-1873 Toulouse observatory switched from being a municipal to provincial observatory. In 1873 a 4.5 inch (10.8 cm) refractor by Secretan was added to the Observatory. In 1875 a reflecting telescope by Henry Brothers was added. The 83 centimetres (33 in) diameter aperture was a reflecting telescope (i.e. mirror) mounted on an equatorial. In 1880 the reflector was re mounted on a cast iron design by Gautier, replacing the wood mounting. Also in 1880 a new refractor (lens) was acquired, a 9 inch (22 cm) aperture by Brunner. Several other instruments were added at this time, and in the early 1900s a new telescope for the Pic Du Midi mountaintop observatory was also added. In the 1880s Toulouse Observatory sent some of its oldest instruments to a museum. This included a transit instrument by Lennel dating to 1774, Dollond telescope, and several quadrants. The observatory participated in the Carte Du Ciel project, recording over a thousand plates (i.e. astronomical photographs) between 1887 and 1939. In the 1980s astronomers of Toulouse Observatory discovered a gravitational lens in space. They found an arc around Abell 370 and were able to recognized it as this phenomenon.

Facilities The observatory has used many telescopes over its lifetime. For example, an 83 cm aperture reflecting telescope was installed in 1875.

See also List of astronomical observatories Pic du Midi Observatory Observatoire Midi-Pyrénées List of largest optical telescopes of the 19th century

References

External links Official Website History [1] Publications of Toulouse Observatory on Paris Observatory digital library

Further reading Levy, Jacques R. (1970–1980). "Bigourdan, Camille Guillaume". Dictionary of Scientific Biography. Vol. 2. New York: Charles Scribner's Sons. pp. 126–127. ISBN 978-0-684-10114-9.

Illustrations

Worked examples

Example 1 — a first encounter with Toulouse Observatory

Start with the simplest possible case. Write down what Toulouse Observatory 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 Toulouse Observatory 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 Toulouse Observatory 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 Toulouse Observatory

In research: Toulouse Observatory 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 Toulouse Observatory 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: Toulouse Observatory is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical observatories in France, Buildings and structures in Toulouse, Education in Toulouse, so understanding it makes those chapters shorter.
In everyday life: Look for Toulouse Observatory 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 Toulouse Observatory in 20 minutes

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

Frequently asked questions

What is Toulouse Observatory in simple terms?

Why does Toulouse Observatory 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 Toulouse Observatory?

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 Toulouse Observatory.