north galactic pole

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north galactic pole

See galactic poles.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

North Galactic Pole


one of the two points of intersection of the celestial sphere with a line perpendicular to the plane of the galactic equator and passing through the center of the celestial sphere. Located in the northern sky, in the constellation Coma Berenices, the north galactic pole has the following approximate equatorial coordinates: right ascension α = 12h 49m; declinations δ = +27.4°.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Interestingly, Blanco 1's northern analogue, Melotte 111 (the Coma Berenices Star Cluster), is found less than 2[degrees] from the north galactic pole. Having one large cluster situated near a galactic pole is curious; two is a very odd coincidence.
In contrast, the Big Dipper floats near the star-poor region of the north galactic pole, where we are looking straight up out of the equatorial plane of our lens-shaped galaxy.
It has the distinction of having the highest galactic latitude of any planetary, being a mere 1 1/2[degrees] from the north galactic pole. The central star is part of a binary system that includes a primary that varies between 8.7 and 8.9 magnitude and is bright enough to hamper observation of the nebula.
The NDWFS is large, covering a 3[degrees] by-3[degrees] square of sky in Bootes near the north galactic pole and a second, 4.5[degrees]-by-2[degrees] strip on roughly the opposite side of the sky in Cetus.
Our clearest view is toward the North Galactic Pole in the constellation Coma Berenices, where we just happen to find the nearest large cluster of galaxies.
In addition, it lies less than 3 |degrees~ from the north galactic pole and well away from the obscuring dust clouds of the Milky Way.
On this month's all-sky map on the following two pages, we've marked the position of the north galactic pole. Nearly overhead in Coma Berenices, this is where the Milky Way's axis of rotation projects north onto the celestial sphere.
Not far from the cluster is the north galactic pole. At the Spica Hour, this point is almost overhead for most of us (exactly so if you live at 27 [degrees] north latitude).

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