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MESSIER 83
SPIRAL GALAXY IN HYDRA
(Image Centred at ra 13h:37m / dec -29:32)
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April 2015 - Observatorio La Banderita, La Pampa, Argentina
DATA
Type: Spiral Galaxy
Visual Brightness: 7.6
Apparent diameter: 11 arc minutes
Distance: 15 Million light years
IMAGE INFORMATION
Optic: 8" f5 Orion Optics Reflector with Televue Paracorr working at f5.75
CAMERA: QSI 583 WS
FILTERS: Baader LRGB
Mount: Sky Watcher NEQ6
SKY CONDITIONS: pristine skies, seeing regular
EXPOSURES: LRGB (40,30,30,30)
OBJECT DESCRIPTION AND IMAGE SESSION
M83 is a close and frontal galaxy with the classic spiral shape. A member of the small group that includes NGC 5253 and other dwarfs companions. It is also known as The Southern Pinwheel. The galaxy is a prolific supernova producer. Six were accounted in the past century and only over passed by NGC 6949 in Cepheus (not visible from our location) with a record of 8.
M83 centre indicates an exceptional ratio of stellar formation matching with its classification as a starburst type galaxy. Same as NGC 253 and M82. Its central region of about a thousand light years of extension shows a high level of complexity and the presence of a double nucleus on an uncertain nature. There are scientist hypothesis that the reason of the double core came after the fusion with other Galaxy of a minor size in its distant past.
MESSIER 83
100 % Resolution in Luminance
8 " Orion Optics UK Reflector
