album/vdB 4,NGC 225 (Cassiopeia)

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vdB 4,NGC 225 (Cassiopeia).jpg - vdB 4,NGC 225, Stock 24,LDN 1291 (Cassiopeia) * ( November 2013) * ASA N12 astrograph (f/3.6,1078mm) * ASA DDM85 mount * FLI ML8300 at -25ºC * LRGB Optec fliter set * L:680m R:190m G:150m B:190m * When Caroline Herschel discovered this cluster on September 23, 1783, she added it to her list as No. 11VdB 4 is a reflection nebula associated with the very young open star cluster NGC 225 which is often called the Sailboat Cluster. The Sailboat name seems to be due to Rod Pommier in an article for a well know astronomical magazine.The nebula may be the remains of the cloud that formed the cluster. Although estimates vary dramatically, open cluster NGC 225 has been estimated to be anywhere from half million to ten millions years old , thus making this widely dispersed cluster one of the youngest open clusters in the Milky Way. Links: http://www.ncra.tifr.res.in/~basi/06.../200634315.pdf

vdB 4,NGC 225, Stock 24,LDN 1291 (Cassiopeia) * ( November 2013) * ASA N12 astrograph (f/3.6,1078mm) * ASA DDM85 mount * FLI ML8300 at -25ºC * LRGB Optec fliter set * L:680m R:190m G:150m B:190m * When Caroline Herschel discovered this cluster on September 23, 1783, she added it to her list as No. 11 VdB 4 is a reflection nebula associated with the very young open star cluster NGC 225 which is often called the Sailboat Cluster. The Sailboat name seems to be due to Rod Pommier in an article for a well know astronomical magazine.The nebula may be the remains of the cloud that formed the cluster. Although estimates vary dramatically, open cluster NGC 225 has been estimated to be anywhere from half million to ten millions years old , thus making this widely dispersed cluster one of the youngest open clusters in the Milky Way. Links: http://www.ncra.tifr.res.in/~basi/06.../200634315.pdf

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