OPEN CLUSTER ASSOCIATED WITH NEBULOSITY
(Image Centred at ra 8h:48m / dec - 42:33)
Processed in April 2016 - Camping La Porteņa, San Antonio de Areco, Buenos Aires, Argentina
Type: Open cluster associated with nebulosity
Visual brightness: 4.6
Apparent diameter: 15 arc minutes
Distance: 1.100 light years
TELESCOPE: 8" Orion Optics UK Mirror with Televue Paracorr (1150 mm focal length)
CAMERA: QSI 583 WS
FILTERS: Baader LRGB
SKY CONDITIONS: rural skies,
EXPOSURES: LHaRGB (40,30,30,30,30) Ha in bin 2x2
OBJECT DESCRIPTION AND IMAGE SESSION
This cluster was possibly discovered by Nicolas Luis Lacaillle between 1751-1752. By the next century, it was catalogued by James Dunlop in 1828 and finally independently registered by Robert J. Trumpler in 1930.
Trumpler 10 is a beautiful open cluster in the constellation of Vela, close to western south HII area of Gum 17 and almost 4 degrees west from Lambda Velorum. The cluster has an irregular shape but many bright stars shining from magnitude 7 to 9. Its brightest star is mag 6.4 (SAO 220.345) visible at the upper center left of the image. Following WEBDA the cluster is 38 million years old.