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| accessdate = 2010-04-11
| accessdate = 2010-04-11
}}</ref>
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It is also significant as site of many scientific discoveries, the most famous being Hale's refinement of the [[spectrohelioscope]].<ref name="nrhpinv2">{{rp|10}}
It is also significant as site of many scientific discoveries, the most famous being Hale's refinement of the [[spectrohelioscope]].<ref name="nrhpinv2"/>{{rp|10}}


The laboratory was declared a [[National Historic Landmark]] in 1989.<ref name="nhlsum"/><ref name="nrhpinv2">{{Cite journal|title={{PDFlink|[http://pdfhost.focus.nps.gov/docs/NHLS/Text/86000103.pdf National Register of Historic Places Registration: Hale Solar Observatory]|326&nbsp;KB}}|date=May 1, 1989 |author=Harry Butowsky |publisher=National Park Service}} and {{PDFlink|[http://pdfhost.focus.nps.gov/docs/NHLS/Photos/86000103.pdf Accompanying photos, exterior and interior, from 1926-1931.]|574&nbsp;KB}}</ref>
The laboratory was declared a [[National Historic Landmark]] in 1989.<ref name="nhlsum"/><ref name="nrhpinv2">{{Cite journal|title={{PDFlink|[http://pdfhost.focus.nps.gov/docs/NHLS/Text/86000103.pdf National Register of Historic Places Registration: Hale Solar Observatory]|326&nbsp;KB}}|date=May 1, 1989 |author=Harry Butowsky |publisher=National Park Service}} and {{PDFlink|[http://pdfhost.focus.nps.gov/docs/NHLS/Photos/86000103.pdf Accompanying photos, exterior and interior, from 1926-1931.]|574&nbsp;KB}}</ref>


==Architecture==
==Architecture==
Built in 1924, the Hale Solar Laboratory is a "T" shaped, reinforced concrete structure of [[Mission Revival Style architecture|Mission Revival]] and [[Spanish Colonial Revival architecture|Spanish Colonial Revival]] design. The building has six rooms with two sections: the observatory and telescope, and the library and living room. A third wing, located below ground, houses transformers, and the heating and ventilating systems.<ref name="nrhpinv2">{{rp|2}}
Built in 1924, the Hale Solar Laboratory is a "T" shaped, reinforced concrete structure of [[Mission Revival Style architecture|Mission Revival]] and [[Spanish Colonial Revival architecture|Spanish Colonial Revival]] design. The building has six rooms with two sections: the observatory and telescope, and the library and living room. A third wing, located below ground, houses transformers, and the heating and ventilating systems.<ref name="nrhpinv2"/>{{rp|2}}


The design for the landscaping was done by [[Beatrix Farrand]], who also designed the grounds, the parking court and driveway. The sycamore and loquat trees, and the arbutus that surround Laboratory were planted in 1928. The exterior of the basement is surrounded by a light moat. Stairs with an iron railing lead from the northern facade to the moat, which surrounds all of the building except the portion which is part of the telescope tower.<ref name="nrhpinv2">{{rp|5}}
The design for the landscaping was done by [[Beatrix Farrand]], who also designed the grounds, the parking court and driveway. The sycamore and loquat trees, and the arbutus that surround Laboratory were planted in 1928. The exterior of the basement is surrounded by a light moat. Stairs with an iron railing lead from the northern facade to the moat, which surrounds all of the building except the portion which is part of the telescope tower.<ref name="nrhpinv2"/>{{rp|5}}


The Hale Solar Laboratory has not been altered since its construction in 1924. The building is in excellent condition and retains much of the original equipment
The Hale Solar Laboratory has not been altered since its construction in 1924. The building is in excellent condition and retains much of the original equipment


==Ownership==
==Ownership==
After Hale's death in 1938 the Hale Solar Laboratory continued to be used as a solar observatory for many years. It was here in 1952 that Mount Wilson astronomers Harold and Horace Babcock (father and son) constructed the first solar [[magnetograph]].<ref name="nrhpinv2">{{rp|8}} This instrument finally enabled astronomers to measure the general magnetic field of the sun, a goal which had long been sought after by Hale.
After Hale's death in 1938 the Hale Solar Laboratory continued to be used as a solar observatory for many years. It was here in 1952 that Mount Wilson astronomers Harold and Horace Babcock (father and son) constructed the first solar [[magnetograph]].<ref name="nrhpinv2"/>{{rp|8}} This instrument finally enabled astronomers to measure the general magnetic field of the sun, a goal which had long been sought after by Hale.


In 1985 the property was sold to William and Christine Shirley, who built a private residence on the grounds. The laboratory currently houses the offices of the [[Mount Wilson Institute]], a non-profit organization, formed in 1986 to operate the Mount Wilson Observatory.<ref>[http://www.nps.gov/history/history/online_books/butowsky5/astro4a.htm National Park Service - Hale Solar Laboratory]</ref>
In 1985 the property was sold to William and Christine Shirley, who built a private residence on the grounds. The laboratory currently houses the offices of the [[Mount Wilson Institute]], a non-profit organization, formed in 1986 to operate the Mount Wilson Observatory.<ref>[http://www.nps.gov/history/history/online_books/butowsky5/astro4a.htm National Park Service - Hale Solar Laboratory]</ref>



⚫
==See also==
⚫
*[[History of Pasadena, California]]
⚫
*[[List of National Historic Landmarks in California]]


==References==
==References==
{{reflist}}
{{reflist}}

⚫
==See also==
⚫
*[[History of Pasadena, California]]
⚫
*[[List of National Historic Landmarks in California]]


==Additional Reading==
==Additional Reading==
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* Learner, Richard; ''Astronomy Through the Telescope''; New York: Van Nostrand Reinhold Company, 1981.
* Learner, Richard; ''Astronomy Through the Telescope''; New York: Van Nostrand Reinhold Company, 1981.
* Melton, Lorraine. ''National Register of Historic Places Inventory-Nomination Form-The Hale Solar Laboratory'' Pasadena, CA
* Melton, Lorraine. ''National Register of Historic Places Inventory-Nomination Form-The Hale Solar Laboratory'' Pasadena, CA



{{Registered Historic Places}}
{{Registered Historic Places}}
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[[Category:Spanish Colonial Revival architecture in California]]
[[Category:Spanish Colonial Revival architecture in California]]


{{California-NRHP-stub}}
{{Uncategorized|date=November 2010}}

Revision as of 08:48, 12 November 2010

Hale Solar Laboratory
The Hale Solar Laboratory entrance, with a bas relief of the sun and its rays over the door, Pasadena, California
Hale Solar Laboratory is located in California
Hale Solar Laboratory
Location740 Holladay Drive, Pasadena, California
Built1923
ArchitectJohnson, Kaufman & Coate
Architectural styleMission Revival—Spanish Colonial Revival, Other.
NRHP reference No.86000103
Significant dates
Added to NRHPJanuary 23, 1986[1]
Designated NHLDecember 20, 1989[2]

The Hale Solar Laboratory is a historic research facility ad library located in Pasadena, Los Angeles County, California. The laboratory is significant because of its association with its builder and original owner George Ellery Hale. Hale was an internationally renown scientist who is recognized as the driving force behind the rise of the science of astrophysics in the United States. The Hale Solar Laboratory served as Hale's office and workshop for the later years of his life.[3][4] It is also significant as site of many scientific discoveries, the most famous being Hale's refinement of the spectrohelioscope.[5]: 10 

The laboratory was declared a National Historic Landmark in 1989.[2][5]

Architecture

Built in 1924, the Hale Solar Laboratory is a "T" shaped, reinforced concrete structure of Mission Revival and Spanish Colonial Revival design. The building has six rooms with two sections: the observatory and telescope, and the library and living room. A third wing, located below ground, houses transformers, and the heating and ventilating systems.[5]: 2 

The design for the landscaping was done by Beatrix Farrand, who also designed the grounds, the parking court and driveway. The sycamore and loquat trees, and the arbutus that surround Laboratory were planted in 1928. The exterior of the basement is surrounded by a light moat. Stairs with an iron railing lead from the northern facade to the moat, which surrounds all of the building except the portion which is part of the telescope tower.[5]: 5 

The Hale Solar Laboratory has not been altered since its construction in 1924. The building is in excellent condition and retains much of the original equipment

Ownership

After Hale's death in 1938 the Hale Solar Laboratory continued to be used as a solar observatory for many years. It was here in 1952 that Mount Wilson astronomers Harold and Horace Babcock (father and son) constructed the first solar magnetograph.[5]: 8  This instrument finally enabled astronomers to measure the general magnetic field of the sun, a goal which had long been sought after by Hale.

In 1985 the property was sold to William and Christine Shirley, who built a private residence on the grounds. The laboratory currently houses the offices of the Mount Wilson Institute, a non-profit organization, formed in 1986 to operate the Mount Wilson Observatory.[6]


References

  1. ^ "National Register Information System". National Register of Historic Places. National Park Service. 2007-01-23.
  2. ^ a b "Hale Solar Laboratory". National Historic Landmark summary listing. National Park Service. Retrieved 2007-10-17.
  3. ^ "George Ellery Hale". Mount Wilson Observatory Association. Retrieved 2010-04-11.
  4. ^ "Hale Solar Laboratory". Astronomy and Astrophysics. U.S. National Park Service. Retrieved 2010-04-11.
  5. ^ a b c d e Harry Butowsky (May 1, 1989). "Template:PDFlink". National Park Service. {{cite journal}}: Cite journal requires |journal= (help) and Template:PDFlink
  6. ^ National Park Service - Hale Solar Laboratory

See also

Additional Reading

  • National Park Service summary: Hale Solar Laboratory
  • Abell, George 0.; Exploration of the Universe. 4th ed., Philadelphia: Saunders College Publishing, 1982.
  • American Society of Mechanical Engineers.; The 100-Inch Telescope of the Mount Wilson Observatory; Northrop Corp., 1981.
  • Asimov, Isaac; Asimov's Biographical Encyclopedia of Science & Technology; New York: Doubleday & Company, 1982.
  • Learner, Richard; Astronomy Through the Telescope; New York: Van Nostrand Reinhold Company, 1981.
  • Melton, Lorraine. National Register of Historic Places Inventory-Nomination Form-The Hale Solar Laboratory Pasadena, CA


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