astronomy

Westerbork Synthesis Radio Telescope

Westerbork Synthesis Radio Telescope 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 Westerbork Synthesis Radio Telescope rather than just read about it. In short: The Westerbork Synthesis Radio Telescope (WSRT) is an aperture synthesis interferometer built on the site of the former World War II Nazi detention and transit camp Westerbork, north of the village of Westerbork, Midden-Drenthe, in the northeastern Netherlands. Overview The WSRT comprises fourteen 25 m (82 ft) radio telescopes deployed in a linear array arranged on a 2.7 km (1.7 mi) East-West line, of which 10 are i…

Key takeaways

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

Reference excerpt

The Westerbork Synthesis Radio Telescope (WSRT) is an aperture synthesis interferometer built on the site of the former World War II Nazi detention and transit camp Westerbork, north of the village of Westerbork, Midden-Drenthe, in the northeastern Netherlands.

Overview The WSRT comprises fourteen 25 m (82 ft) radio telescopes deployed in a linear array arranged on a 2.7 km (1.7 mi) East-West line, of which 10 are in a fixed equidistant position, 2 are nearby on a 300 m (980 ft) rail track, and 2 are located 1 km (0.62 mi) eastwards on another 200 m (660 ft) rail track. It has a similar arrangement to other radio telescopes such as the One-Mile Telescope, Australia Telescope Compact Array and the Ryle Telescope. Its Equatorial mount is what sets it apart from most other radio telescopes, most of which have an Altazimuth mount. This makes it specifically useful for specific types of science, like polarized emission research as the detectors maintain a constant orientation on the sky during an observation. Ten of the telescopes are on fixed mountings while the remaining two dishes are movable along two rail tracks. The telescope was completed in 1970 and underwent a major upgrade between 1995 – 2000. The telescopes in the array can operate at several frequencies between 120 MHz and 8.3 GHz with an instantaneous bandwidth of 120 MHz and 8092-line spectral resolution. The WSRT is often combined with other telescopes around the world to perform very-long-baseline interferometry (VLBI) observations, being part of the European VLBI Network. The telescope is operated by ASTRON, the Netherlands Institute for Radio Astronomy. WSRT performed a major upgrade in 2013 as part of the APERTIF (APERture Tile In Focus) project, where the current detectors were replaced with focal-plane arrays. The Telescope was out of operation for the upgrade from 2015 to 2019, which allows a 25x larger field of view. The upgraded telescope is used for large scale surveys of the northern sky, bringing back focus on the Hydrogen line for which it was originally designed, but also large pulsar searches and other science. The WSRT is also an International GNSS Service site. WSRT observed galaxies in the Spitzer Infrared Nearby Galaxies Survey at wavelengths of 18 and 22 cm (7.1 and 8.7 in). The WSRT site has also hosted one of the two experimental EMBRACE (Electronic MultiBeam Radio Astronomy ConcEpt) phased array telescopes, which was at the time a possible prototype for the Square Kilometre Array (SKA) project.

References

External links Media related to Westerbork Synthesis Radio Telescope at Wikimedia Commons

Illustrations

Worked examples

Example 1 — a first encounter with Westerbork Synthesis Radio Telescope

Start with the simplest possible case. Write down what Westerbork Synthesis Radio Telescope 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 Westerbork Synthesis Radio Telescope 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 Westerbork Synthesis Radio Telescope 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 Westerbork Synthesis Radio Telescope

In research: Westerbork Synthesis Radio Telescope 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 Westerbork Synthesis Radio Telescope 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: Westerbork Synthesis Radio Telescope is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical observatories in the Netherlands, Buildings and structures in Drenthe, Interferometric telescopes, so understanding it makes those chapters shorter.
In everyday life: Look for Westerbork Synthesis Radio Telescope 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 Westerbork Synthesis Radio Telescope in 20 minutes

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

Frequently asked questions

What is Westerbork Synthesis Radio Telescope in simple terms?

Why does Westerbork Synthesis Radio Telescope 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 Westerbork Synthesis Radio Telescope?

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 Westerbork Synthesis Radio Telescope.