okt 252013
 
Anne's Image of the Day: The Butterfly Cluster

October 25, 2013 The Butterfly Cluster, an open cluster in Scorpius Image Credit: N.A.Sharp, Mark Hanna, REU program/NOAO/AURA/NSF The Butterfly Cluster (also known as Messier 6 or NGC 6405) is a bright open star cluster of some 12 light-years across, located around 1,600 light-years away from Earth in the southern constellation of Scorpius (the Scorpion). [continue reading]

okt 152013
 
Anne's Image of the Day: The Rosette Nebula

October 15, 2013 The Rosette Nebula, an emission nebula in Monoceros Image Credit & Copyright: J-P Metsävainio (http://astroanarchy.zenfolio.com) The Rosette Nebula (Caldwell 49 or Sh2-275) is a circular emission nebula of some 130 light-years across that lies near one end of the giant the Rosette Molecular Cloud in the Perseus Arm of the Galaxy, about [continue reading]

okt 122013
 
Anne's Image of the Day: Open Cluster Messier 18

October 12, 2013 Messier 18, an open cluster in Sagittarius Image Credit: Two Micron All Sky Survey (2MASS) / IPAC Messier 18 (also known as NGC 6613) is a relatively faint open star cluster of about 17 light-years across, located some 4,900 light-years away from Earth in the constellation of Sagittarius (the Archer), between the [continue reading]

sep 252013
 
Anne's Image of the Day: Open Cluster Trumpler 16

September 25, 2013 Trumpler 16, an open cluster within the Carina Nebula Image Credit: NASA, ESA, and J. Maíz Apellániz (Instituto de Astrofísica de Andalucía, Spain) Trumpler 16 is an open star cluster within the Carina Nebula (NGC 3372 or the Eta Carinae Nebula), located about 7,500 light-years away from Earth in the southern constellation [continue reading]

sep 192013
 
Anne's Image of the Day: The Ptolemy Cluster

September 19, 2013 The Ptolemy Cluster, an open star cluster in Scorpius Image Credit: N.A.Sharp, REU program/NOAO/AURA/NSF The Ptolemy Cluster (also known as Messier 7 or NGC 6475) is an open star cluster of some 25 light-years across that lies about 980 light-years away from Earth in the constellation of Scorpius (the Scorpion). It is [continue reading]

sep 122013
 
Anne's Image of the Day: Open Cluster Messier 41

September 12, 2013 Messier 41, an open cluster in Canis Major Image Credit: Two Micron All Sky Survey (2MASS) Messier 41 (also known as NGC 2287) is a relatively young, bright open cluster of approximately 25 light-years across, located some 2,300 light-years away from Earth in the constellation of Canis Major (the Greater Dog), while [continue reading]