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Collinder 89
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The open cluster Collinder 89 (top) and IC 444 in the constellation Gemini (at the feet of Castor).(Eta Gemini is at the bottom right) Processed image
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NGC 7088
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NGC 7088, also known as Baxendell's Unphotographable Nebula is a nebula that was recorded by amateur astronomer Joseph Baxendell on September 28, 1880. Joseph Baxendell published his discovery in the Monthly Notices of the Royal Astronomical Society of a nebula 25 'north of the globular clu...
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NGC 189
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NGC 189 (also Collinder 462 and OCL 301) is a magnitude +8.8 open star cluster located 3,500 light-years away in the constellation Cassiopeia. The cluster was first discovered by astronomer Caroline Herschel, using a 10.67 cm (4.2 inch) newtonian reflector, on the 27th September 1783. The cluste...
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NGC 225
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NGC 225 (also Collinder 7 and OCL 305) is a magnitude +7.0 open star cluster located 2,143 light-years away in the constellation Cassiopeia. The cluster was first discovered by astronomer Caroline Herschel, using a 10.67 cm (4.2 inch) Newtonian reflector, on the 27th September 1783. The object wa...
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NGC 654
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NGC 654 (also Collinder 18, Melotte 9 and OCL 330) is a magnitude +6.5 open star cluster located 6,657 light-years away in the constellation Cassiopeia. The cluster was first discovered by astronomer Caroline Herschel, using a 10.67 cm (4.2 inch) Newtonian reflector, on the 27th September 1783. T...
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NGC 659
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NGC 659 (also Collinder 19, Melotte 10 and OCL 332) is a magnitude +7.9 open cluster in the constellation Cassiopeia. The cluster was first discovered by astronomer Caroline Herschel, using a 10.67 cm (4.2 inch) newtonian reflector, on the 27th September 1783. The object was rediscovered by Germa...
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NGC 1836
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NGC 1836 (also ESO 56-SC61) is a magnitude +12.2 open star cluster located in the constellation Dorado. The open cluster was discovered by Scottish astronomer James Dunlop using a homemade 9-foot 22.86 cm (9 inch) f/12 speculum Newtonian reflector at Paramatta, New South Wales, Australia, on the...
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NGC 5882
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NGC 5882 (also IC 1108, HD 135456 and ESO 274-PN7) is a magnitude +9.4 planetary nebula located 3,000 light-years away in the constellation Lupus. The planetary nebula was discovered by British astronomer John Herschel using a 47.5 cm (18.7 inch) f/13 speculum reflecting telescope at his Feldhau...
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SN1993J
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Beginning with a full view of beautiful spiral galaxy M81, follow the insets (left, bottom, then right) to zoom in on a real survivor.
Seen at the centre of the final field on the right is a star identified as the survivor of a cosmic cataclysm - the supernova explosion of its companio...
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NGC6822
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Title: C stars in the outer spheroid of NGC 6822
Authors: S. Demers, P. Battinelli, E. Artigau
From a 2 x 2 degree survey of NGC 6822 researchers have previously established that this Local Group dwarf irregular galaxy possesses a huge spheroid having more than one degree in le...
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NGC 7055
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NGC 7055 is a magnitude +13.1 asterism located in the constellation Cepheus. The group of stars was discovered by British astronomer John Herschel using a 47.5 cm (18.7 inch) f/13 speculum reflecting telescope at Windsor Road, Slough on the 25th September 1829. Right Ascension 21h 19m 25.8s, Dec...
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Stellar clusters
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Title: The effect of spiral arm passages on the evolution of stellar clusters
Authors: M. Gieles (1,2,3), E. Athanassoula (2), S.F. Portegies Zwart (3) ((1) Utrecht, (2) Marseille, (3) Amsterdam)
We study the effect of spiral arm passages on the evolution of star clusters o...
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NGC 632
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NGC 632 (also IRAS 01346+0537, MCG 1-5-10, UGC 1157 and PGC 6007) is a magnitude +12.4 spiral galaxy located 145 million light-years away in the constellation Pisces. The galaxy was discovered by British astronomer John Herschel using a 47.5 cm (18.7 inch) f/13 speculum reflecting telescope at W...
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NGC 664
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NGC 664 (also IRAS 01411+0358, MCG 1-5-29, UGC 1210 and PGC 6359) is a magnitude +12.8 spiral galaxy located 249 million light-years away in the constellation Pisces. The galaxy was discovered by British astronomer John Herschel using a 47.5 cm (18.7 inch) f/13 speculum reflecting telescope at Wi...
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NGC 1712
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NGC 1712 (also ESO 56-SC11) is a magnitude +10.1 open star cluster located in the constellation Dorado. The open cluster was discovered by Scottish astronomer James Dunlop using a homemade 9-foot 22.86 cm (9 inch) f/12 speculum Newtonian reflector at Paramatta, New South Wales, Australia, on the...
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