![]() ![]() Stock clusters tend to be large in area but sparse in members. Stock clusters, particularly in Cassiopeia, Perseus, Camelopardalis, andĬygnus. But allĬan be observed in amateur telescopes. So that only a few of them are plotted on familiar star atlases. Most are faint and generally lacking visual appeal, He discovered (or at least firstĭescribed) all 25. Of 25 clusters while based at Case Western Reserve University inĬleveland, Ohio, in the early 1950s. Jurgen Stock (1923-2004) was born in Germany but compiled his list Let's take a look at the people behind these star clusterĭesignations and why they compiled their catalogs. And unlike galaxies and nebulae, they tend to stand up ![]() These clusters are best observed through small, wide-field telescopes orĮven binoculars. Narrow-field eyepieces generally used by the NGC contributors. Sparse, or scattered to stand out in the long-focus scopes and These clusters were generally omitted from the NGC and IC notīecause they're too faint, but because they're too big, With designations such as Stock, Tr, Cr, and Mrk. Telescope's Pocket Sky Atlas show many open star clusters labeled Objects, visible only through big telescopes under pristine dark skies.īut even simple charts such as the ones in Sky & Many of the biggest star atlases also show objects from otherĬatalogs such as the Uppsala General Catalogue of Galaxies (UGC), or theĬatalogue of Galactic Planetary Nebulae (P-K or PN) compiled by CzechĪstronomers Lubos Perek and Lubos Kohoutek. ![]() (IC), these include most of the objects observed by amateur astronomers Together with the supplemental Index Catalogues Herschel's designations rarely appear on modern star charts,īecause his discoveries were subsumed into the monumental New GeneralĬatalogue (NGC) in 1888. Observed by William Herschel (1738-1822)-or even Herschel's full,Ģ,500-object catalog (August issue, page 60). Other lists, such as the Herschel 400-a selection of the best objects Star clusters, galaxies, and nebulae-is a rite of passage forĪfter completing the Messiers, many amateur astronomers move on to Working through his list of "not comets"-109 or 110 Astronomers aren't immune to listmania either.Ĭredit Charles Messier with starting the fad in the late 18thĬentury. PEOPLE LOVE LISTS! Whether it's top-scoring ballplayers,īest-selling books, or Colorado's best ski resorts, everybody loves APA style: Exploring those odd-named star clusters: Collinder, Stock, Trumpler-open clusters with no Messier or NGC number can be surprisingly bright and easy.Exploring those odd-named star clusters: Collinder, Stock, Trumpler-open clusters with no Messier or NGC number can be surprisingly bright and easy." Retrieved from This copyrighted material is duplicated by arrangement with Gale and may not be redistributed in any form without written permission from Sky & Telescope Media, LLC. MLA style: "Exploring those odd-named star clusters: Collinder, Stock, Trumpler-open clusters with no Messier or NGC number can be surprisingly bright and easy." The Free Library.Located 12 degrees northwest of the Hyades is M45, the brilliant Pleiades open cluster. In total, it contains at least 200 stars and is estimated to be 625 million years old. The brightest component stars are theta2 Tauri (θ2 Tau - mag. Due to its large apparent size, this is a perfect binocular cluster. This package of stars displays many nice colours, including several fine double stars. To the naked eye, at least 20 stars can be seen arranged in a "V" construction with the number rising to above 100 with good quality binoculars. The cluster is best seen from northern latitudes during the months of November, December and January.įinder Chart for C41 - The Hyades - pdf format (credit:- freestarcharts) As a naked-eye object, the Hyades have been known since prehistoric times. However, it's purely a foreground star, an interloper located only 65 light-years distant that happens to be in the same line of sight. It's not unreasonable to assume that Aldebaran is also a member of the Hyades. The Hyades is easily found as it circles the brightest star in Taurus, first magnitude orange giant star Aldebaran (α Tau - mag. Consequently, the Hyades is one of the top studied open clusters of all. At a distance of 153 light-years this is the nearest open cluster - the Ursa Major Moving Group is closer, but's extremely scattered and more of a cluster like object than a true cluster. ![]() It spans 5.5 degrees of sky, which is equivalent to 11 times the diameter of the full Moon. The Hyades is a very large loose naked eye open cluster located in the constellation of Taurus. ![]()
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