deep-sky object


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deep-sky object

Any object that is not a member of the Solar System. In general, the term is applied to nebulae, star clusters, galaxies, and clusters of galaxies, but not usually to stars.
References in periodicals archive ?
The ASSA Top-100 Deep-Sky Objects catalogue offers a hand-picked selection of the most awesome deep-sky gems in the southern skies, and is presented as a challenge to the beginner (see below).
Above all, winter is when many of the brightest deep-sky objects are on display --objects that can punch through light-polluted skies.
Members are invited to submit observations of deep-sky objects to the ASSA Deep-Sky Observing Section.
It is more difficult to get good looks at summertime deep-sky objects due to the season's haze and humidity, which tend to amplify light pollution.
The last wintry night I observed there, my 10-inch Dobsonian picked up some fairly faint deep-sky objects that might surprise you.
On the night of September 12, 1758, French astronomer Charles Messier began compiling a catalog of deep-sky objects in the hope of saving fellow comet-hunters from wasting time with ersatz comets.
It's fun to give your telescope's computer a rest and develop your ability to find deep-sky objects manually.
But for most deep-sky objects, you need much more detailed, zoomed-in maps.
Astrophotos of deep-sky objects were received from Kos Coronaios, Lucas Ferreira, Dale Liebenberg, Dany Duprez, Pete Scully and Anthony Ayiomamitis.
Published by Danish-born astronomer John Dreyer in 1888, the New General Catalogue is the best-known catalogue of deep-sky objects, and arguably the most important, as it contains most of the nearly 8000 brightest deep-sky objects and covers both celestial hemispheres.
The author, a physician and photographer whose images routinely appear in sky and Telescope magazine, provides vivid images and abundant facts about more than 120 deep-sky objects.
In this richly illustrated guide enthusiast Kerrod explains his stunning photographs of stars, galaxies, planets, and deep-sky objects then goes through the most prominent in detail, giving features, dimensions, essential detail, images, distinctive features, locations, and significant astronomical highlights.