astronomy

Kenwood Astrophysical Observatory

Kenwood Astrophysical 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 Kenwood Astrophysical Observatory rather than just read about it. In short: The Kenwood Astrophysical Observatory was the personal observatory of George Ellery Hale, constructed by his father, William E. Hale, in 1890 at the family home in the Kenwood section of Chicago.

Key takeaways

Kenwood Astrophysical 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 Kenwood Astrophysical Observatory to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Kenwood Astrophysical Observatory from memory before moving on to harder problems.

Reference excerpt

The Kenwood Astrophysical Observatory was the personal observatory of George Ellery Hale, constructed by his father, William E. Hale, in 1890 at the family home in the Kenwood section of Chicago. It was here that the spectroheliograph, which Hale had invented while attending MIT, was first put to practical use; and it was here that Hale established the Astrophysical Journal. Kenwood's principal instrument was a twelve-inch refractor telescope, which was used in conjunction with a Rowland grating as part of the spectroheliograph. Hale hired Ferdinand Ellerman as an assistant; years later, the two would work together again at the Mount Wilson Observatory.Hale's work attracted the attention of many in the astronomical community, and when he was hired at the University of Chicago as a professor of astronomy, more advanced astronomy students initially used the Kenwood Observatory. When Yerkes Observatory was established in 1897, the Kenwood instruments were donated to the University of Chicago and moved to the Yerkes facility in Williams Bay, Wisconsin. The 12-inch telescope was one of the instruments besides the large 40-inch aperture refractor for the start of Yerkes observatory in the 1890s. The observatory was also called Kenwood Observatory. The 12-inch refractor is noted as being moved to the north dome of the Yerkes observatory, but was eventually replaced by a 24-inch reflector telescope. The 12-inch refractor was a double telescope with one for visual observation and another objective for astrophotography.

See also List of astronomical observatories

References

"Obituary Notices: Associates: Hale, George Ellery". Monthly Notices of the Royal Astronomical Society. 99 (1): 323–324. November 1938. Bibcode:1939MNRAS..99..322.. doi:10.1093/mnras/99.4.322. Retrieved 2008-02-05. Simmons, Mike (1983). "History of Mount Wilson Observatory". Archived from the original on 2007-12-19. Retrieved 2008-02-05. Steele, Diana (March 20, 1997). "Yerkes Observatory: A century of stellar science". University of Chicago Chronicle. 16 (13). Retrieved 2008-02-05.

External links Photographs of the Kenwood Astrophysical Observatory and equipment Image of the Kenwood Observatory courtesy of the University of Chicago Hale's double refractor at Yerkes Observatory

Illustrations

Worked examples

Example 1 — a first encounter with Kenwood Astrophysical Observatory

Start with the simplest possible case. Write down what Kenwood Astrophysical 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 Kenwood Astrophysical 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 Kenwood Astrophysical 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 Kenwood Astrophysical Observatory

In research: Kenwood Astrophysical 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 Kenwood Astrophysical 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: Kenwood Astrophysical Observatory is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical observatories in Illinois, Defunct astronomical observatories, Double telescopes, so understanding it makes those chapters shorter.
In everyday life: Look for Kenwood Astrophysical 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 Kenwood Astrophysical Observatory in 20 minutes

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

Frequently asked questions

What is Kenwood Astrophysical Observatory in simple terms?

The Kenwood Astrophysical Observatory was the personal observatory of George Ellery Hale, constructed by his father, William E. Hale, in 1890 at the family home in the Kenwood section of Chicago.

Why does Kenwood Astrophysical 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 Kenwood Astrophysical 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 Kenwood Astrophysical Observatory.