WEFOUNDCelestial Objects for Common Telescopes (Cambridge Library Collection - Astronomy) by Thomas William Webb (2010-01-01)


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Don Machholz is an engineer in Auburn, California. Interested in astronomy since childhood, he is a renowned comet hunter, having discovered nine comets that bear his name. He writes articles for local California newspapers and radio stations for special astronomical events. Between 1988 and 2000, Don Machholz was the Comets Recorder for the Association of Lunar and Planetary Recorders.

Astronomy is often considered to be one of the oldest branches of science. In many ancient societies, astronomical observations were used not only for the practical job of determine the rhythm of life, (e.g. the various seasons of the year, the celebration of festivals, etc.) but also for the philosophical exploration of the nature of the universe as well as that of human existence. Therefore, various instruments were invented to aid the important science of astronomy. One of these instruments was called the armillary sphere.

An armillary sphere is an astronomical device made up of a number of rings linked to a pole. These rings represent the circles of the celestial sphere, such as the equator, the ecliptic and the meridians. Incidentally, it is from these rings that the name of this device is derived from (the word armilla is Latin for “bracelet, armlet, arm ring”).

Armillary spheres may be divided into two main categories based on their function – demonstrational armillary spheres and observational armillary spheres. The former is used to demonstrate and explain the movement of celestial objects, whilst the latter is used to observe the celestial objects themselves. Therefore, observational armillary spheres are generally larger in size when compared to their demonstrational counterparts. The observational armillary spheres also had fewer rings, which made them more accurate and easier to use.      

The 1561 celestial phenomenon over Nuremberg was a mass sighting of celestial phenomena or unidentified flying objects (UFO) above Nuremberg , Germany . The phenomenon has been interpreted by some modern UFO enthusiasts as an aerial battle, possibly of extraterrestrial origin. This view is mostly dismissed by skeptics, some referencing Carl Jung's mid-twentieth century writings about the subject while others find the phenomenon is likely to be a sun dog . [1]

Around dawn on April 14, 1561, residents of Nuremberg saw what they described as an aerial battle, followed by the appearance of a large black triangular object and then a large crash outside of the city. According to witnesses, there were hundreds of spheres, cylinders and other odd-shaped objects that moved erratically overhead. [2] [3] [4] [5] [6]

A broadsheet news article was printed later that month, describing the event. The broadsheet, illustrated with a woodcut engraving and text by Hans Glaser , measures 26.2 centimetres (10.3 in) by 38.0 centimetres (15.0 in). The document is archived in the prints and drawings collection at the Zentralbibliothek Zürich in Zurich , Switzerland . [7]

Tel: 01665 604888 (Overseas 44 1665 604888). All items are offered subject to
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sterling, US dollars, or euros. UK customers: We accept payment by credit card,
PayPal, or cheque. Any order made from this site is subject to our normal terms
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Shipping costs are based on books weighing 2.2 LB, or 1 KG. If your book order is heavy or oversized, we may contact you to let you know extra shipping is required.

Bookseller: Barter Books Ltd
Address: Alnwick, NORTH, United Kingdom
AbeBooks Bookseller Since: August 10, 1999

Don Machholz is an engineer in Auburn, California. Interested in astronomy since childhood, he is a renowned comet hunter, having discovered nine comets that bear his name. He writes articles for local California newspapers and radio stations for special astronomical events. Between 1988 and 2000, Don Machholz was the Comets Recorder for the Association of Lunar and Planetary Recorders.

Astronomy is often considered to be one of the oldest branches of science. In many ancient societies, astronomical observations were used not only for the practical job of determine the rhythm of life, (e.g. the various seasons of the year, the celebration of festivals, etc.) but also for the philosophical exploration of the nature of the universe as well as that of human existence. Therefore, various instruments were invented to aid the important science of astronomy. One of these instruments was called the armillary sphere.

An armillary sphere is an astronomical device made up of a number of rings linked to a pole. These rings represent the circles of the celestial sphere, such as the equator, the ecliptic and the meridians. Incidentally, it is from these rings that the name of this device is derived from (the word armilla is Latin for “bracelet, armlet, arm ring”).

Armillary spheres may be divided into two main categories based on their function – demonstrational armillary spheres and observational armillary spheres. The former is used to demonstrate and explain the movement of celestial objects, whilst the latter is used to observe the celestial objects themselves. Therefore, observational armillary spheres are generally larger in size when compared to their demonstrational counterparts. The observational armillary spheres also had fewer rings, which made them more accurate and easier to use.      

The 1561 celestial phenomenon over Nuremberg was a mass sighting of celestial phenomena or unidentified flying objects (UFO) above Nuremberg , Germany . The phenomenon has been interpreted by some modern UFO enthusiasts as an aerial battle, possibly of extraterrestrial origin. This view is mostly dismissed by skeptics, some referencing Carl Jung's mid-twentieth century writings about the subject while others find the phenomenon is likely to be a sun dog . [1]

Around dawn on April 14, 1561, residents of Nuremberg saw what they described as an aerial battle, followed by the appearance of a large black triangular object and then a large crash outside of the city. According to witnesses, there were hundreds of spheres, cylinders and other odd-shaped objects that moved erratically overhead. [2] [3] [4] [5] [6]

A broadsheet news article was printed later that month, describing the event. The broadsheet, illustrated with a woodcut engraving and text by Hans Glaser , measures 26.2 centimetres (10.3 in) by 38.0 centimetres (15.0 in). The document is archived in the prints and drawings collection at the Zentralbibliothek Zürich in Zurich , Switzerland . [7]

Sky & Telescope brings you hundreds of articles on observing celestial bodies. Take a tour of the night sky from near-earth objects to distant Messier objects . Explore encounters with comets, meteors, and supernovae. Dive into detailed discussions about galaxies millions of light-years from the Earth or surface features of the Moon. Learn about upcoming asteroid approaches and celestial body happenings and prepare yourself to spot or photograph them all. We’ll provide useful tips whether you want to spend 10 minutes outside peering at Jupiter’s Galilean moons through a small pair of binoculars or spend hours on end capturing the perfect photograph of that elusive distant galaxy.

Our articles look at objects in space visible throughout the year, during a particular season, and special events for a single day, such as eclipses  and occultations . We’ll help you through the coldest nights by sharing space facts, or to put it more eloquently, the wonders of the universe.

Mira, one of the easiest-to-observe pulsating variable stars, reaches peak brightness this month. Don't be shy, come look her in the eye. 

Tel: 01665 604888 (Overseas 44 1665 604888). All items are offered subject to
prior sale. Postage and packing is charged at cost and is in addition to the
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sterling, US dollars, or euros. UK customers: We accept payment by credit card,
PayPal, or cheque. Any order made from this site is subject to our normal terms
of business, whereby title to any g...

Shipping costs are based on books weighing 2.2 LB, or 1 KG. If your book order is heavy or oversized, we may contact you to let you know extra shipping is required.

Bookseller: Barter Books Ltd
Address: Alnwick, NORTH, United Kingdom
AbeBooks Bookseller Since: August 10, 1999

Don Machholz is an engineer in Auburn, California. Interested in astronomy since childhood, he is a renowned comet hunter, having discovered nine comets that bear his name. He writes articles for local California newspapers and radio stations for special astronomical events. Between 1988 and 2000, Don Machholz was the Comets Recorder for the Association of Lunar and Planetary Recorders.

Astronomy is often considered to be one of the oldest branches of science. In many ancient societies, astronomical observations were used not only for the practical job of determine the rhythm of life, (e.g. the various seasons of the year, the celebration of festivals, etc.) but also for the philosophical exploration of the nature of the universe as well as that of human existence. Therefore, various instruments were invented to aid the important science of astronomy. One of these instruments was called the armillary sphere.

An armillary sphere is an astronomical device made up of a number of rings linked to a pole. These rings represent the circles of the celestial sphere, such as the equator, the ecliptic and the meridians. Incidentally, it is from these rings that the name of this device is derived from (the word armilla is Latin for “bracelet, armlet, arm ring”).

Armillary spheres may be divided into two main categories based on their function – demonstrational armillary spheres and observational armillary spheres. The former is used to demonstrate and explain the movement of celestial objects, whilst the latter is used to observe the celestial objects themselves. Therefore, observational armillary spheres are generally larger in size when compared to their demonstrational counterparts. The observational armillary spheres also had fewer rings, which made them more accurate and easier to use.      

Tel: 01665 604888 (Overseas 44 1665 604888). All items are offered subject to
prior sale. Postage and packing is charged at cost and is in addition to the
quoted price. Overseas customers: We accept payment by credit card, US dollar
check, Euro cheque, PayPal, or international money order made out in UK
sterling, US dollars, or euros. UK customers: We accept payment by credit card,
PayPal, or cheque. Any order made from this site is subject to our normal terms
of business, whereby title to any g...

Shipping costs are based on books weighing 2.2 LB, or 1 KG. If your book order is heavy or oversized, we may contact you to let you know extra shipping is required.

Bookseller: Barter Books Ltd
Address: Alnwick, NORTH, United Kingdom
AbeBooks Bookseller Since: August 10, 1999

Tel: 01665 604888 (Overseas 44 1665 604888). All items are offered subject to
prior sale. Postage and packing is charged at cost and is in addition to the
quoted price. Overseas customers: We accept payment by credit card, US dollar
check, Euro cheque, PayPal, or international money order made out in UK
sterling, US dollars, or euros. UK customers: We accept payment by credit card,
PayPal, or cheque. Any order made from this site is subject to our normal terms
of business, whereby title to any g...

Shipping costs are based on books weighing 2.2 LB, or 1 KG. If your book order is heavy or oversized, we may contact you to let you know extra shipping is required.

Bookseller: Barter Books Ltd
Address: Alnwick, NORTH, United Kingdom
AbeBooks Bookseller Since: August 10, 1999

Don Machholz is an engineer in Auburn, California. Interested in astronomy since childhood, he is a renowned comet hunter, having discovered nine comets that bear his name. He writes articles for local California newspapers and radio stations for special astronomical events. Between 1988 and 2000, Don Machholz was the Comets Recorder for the Association of Lunar and Planetary Recorders.


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