Mano Prieto Observatory

NGC4490/4485

NGC4490/4485

NGC4490 and its companion galaxy NGC4485 are between 40-50 Million Light-Years distant toward the Constellation Canes Venatici. NGC4490 is also known as the Cocoon Galaxy. Stars trail between the two galaxies in a 24,000 Light-Year gap as they now pull away from each other during their orbital dance toward merger. The gravitational interaction has created a large number of star-forming regions with pink HII areas and blue stars regions lighting the entire length of both. The pair is being studied by astronomers through computer models to determine the mechanics of interacting galaxy pairs. A supernova was noted in NGC4490 in 2008, and previously in 1982. NGC4490 shows characteristics of a barred spiral galaxy, while NGC4485 is classified as an irregular galaxy.

Object: NGC4490 and NGC4485
Distance: 40-50 Million Light-Years
Magnitude: 9.8
Date: May 2011
Place: Fort Davis, TX
Exposure Details: LRGB:550:150:180:240 unbinned

Processing: MaxIm DL, CCDInspector, CCDStack, Photoshop CS3

Optics: 12.5" RCOS Truss
Focal Length: 2808 @ f9
Mount: Paramount ME Robotic
Camera: SBIG STL6303E
Focuser: RCOS
Guiding: Off-Axis using SBIG Guide Camera
Filters: Tru-Balance Gen II 2" LRGB

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