astronomy

Ventspils International Radio Astronomy Centre

Ventspils International Radio Astronomy Centre 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 Ventspils International Radio Astronomy Centre rather than just read about it. In short: Ventspils International Radio Astronomy Centre (Latvian: Ventspils Starptautiskais radioastronomijas centrs – VIRAC) is an ex-Soviet radio astronomy installation 30 km north of Ventspils, Latvia, on the coast of the Baltic Sea in Ance parish. The installation was secret until 1993 after Latvia regained independence.

Key takeaways

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

Reference excerpt

Ventspils International Radio Astronomy Centre (Latvian: Ventspils Starptautiskais radioastronomijas centrs – VIRAC) is an ex-Soviet radio astronomy installation 30 km north of Ventspils, Latvia, on the coast of the Baltic Sea in Ance parish. The installation was secret until 1993 after Latvia regained independence. It was taken over by the Latvian Academy of Sciences after the withdrawal of the Soviet Army in 1994. Since then, two of the three radio telescopes have been repaired and renewed.

Description Located in woodlands near Irbene, in Ventspils Municipality, Latvia, the centre was founded in 1974 by the Soviet military. It originally consisted of a 32-metre telescope, along with two smaller telescopes and a communications centre, and was known as Zvezdochka, meaning "Little Star". It was possibly used by the KGB during the Cold War to spy on communications between Europe and the United States. It became a scientific research facility in the 1990s, established on 22 July 1994 as part of the Latvian Academy of Sciences, before becoming an independent organisation on 24 April 1996. It is now known as the Ventspils International Radioastronomy Center ("Ventspils Starptautiskais radioastronomijas centrs"), or the Irbene Astronomy Center.

RT-32 RT-32 is a 32-metre (105 ft) parabolic radio telescope. It is made up of over 20,000 components, and the central cone weighs 80 tonnes. The fully steerable telescope observes at centimetre wavelengths. The combination of size and precision engineering makes the larger dish especially valuable to scientists. The structure was built by a naval factory in Ukraine, and the interiors are reminiscent of a ship. The telescope is mounted on a 25-metre-high (82 ft) tower. It has an 11.45-metre (37.6 ft) focal length, and a 2.5-metre (8.2 ft) secondary mirror. In its first upgrade since being constructed, RT-32 was temporarily dismantled towards the end of 2014, and moved to a purpose-built shelter for restoration. The restoration includes re-welding the panels, replacing rusted parts, and repairing damage caused by the passage of time, water ingress and lightning strikes. The telescope will also be upgraded to enable it to be controlled remotely, and to be able to make more precise and sensitive observations. The telescope will be used in Very-long-baseline interferometry. The restoration cost around €16 million overall, with the restoration of the telescope panels costing around €1.5 million; the restoration was funded by the European Union and Latvian state and Ventspils district governments. The dish of the telescope was remounted in June 2015, with the restoration due to be completed in October 2015.

RT-16 The centre also has a 16 metres (52 ft) parabolic radio telescope.

LOFAR Since October 2019, the VIRAC observatory in Irbene includes a LOFAR station.

See also List of astronomical observatories

References

External links

Illustrations

Worked examples

Example 1 — a first encounter with Ventspils International Radio Astronomy Centre

Start with the simplest possible case. Write down what Ventspils International Radio Astronomy Centre 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 Ventspils International Radio Astronomy Centre 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 Ventspils International Radio Astronomy Centre 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 Ventspils International Radio Astronomy Centre

In research: Ventspils International Radio Astronomy Centre 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 Ventspils International Radio Astronomy Centre 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: Ventspils International Radio Astronomy Centre is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1974 establishments in Latvia, 1974 establishments in the Soviet Union, Astronomical observatories built in the Soviet Union, so understanding it makes those chapters shorter.
In everyday life: Look for Ventspils International Radio Astronomy Centre 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 Ventspils International Radio Astronomy Centre in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Ventspils International Radio Astronomy Centre means in your own words.
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Work through the three examples above with pen and paper.
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Frequently asked questions

What is Ventspils International Radio Astronomy Centre in simple terms?

Why does Ventspils International Radio Astronomy Centre 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 Ventspils International Radio Astronomy Centre?

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 Ventspils International Radio Astronomy Centre.