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Contains:  NGC 3199
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NGC 3199, 





    
        

            rat156
NGC 3199

NGC 3199

Technical card

Imaging telescope or lens:ASA N12

Imaging camera:SBIG STT 8300M

Mount:Paramount MX

Guiding telescope or lens:ASA N12

Guiding camera:SBIG STT 8300M

Software:Photoshop CS5CCDStack 2+Software Bisque The Sky X Pro

Filter:Baader Planetariun LRGB Ha - O3 - S2 38mm

Accessory:SBIG CFW8G

Resolution: 2303x1743

Dates:Jan. 30, 2014

Frames: 42x900"

Integration: 10.5 hours

Avg. Moon age: 29.06 days

Avg. Moon phase: 0.25%

Astrometry.net job: 173487

RA center: 10h 18' 14"

DEC center: -57° 46' 40"

Pixel scale: 1.500 arcsec/pixel

Orientation: -85.334 degrees

Field radius: 0.602

Locations: Home Observatory, Werribee, Victoria, Australia

Description

NGC 3199 lies about 12,000 light-years away, a glowing cosmic cloud in the southern constellation of Carina. The nebula is about 75 light-years across in this haunting, false-color view. Though the deep image reveals a more or less complete ring shape, it does look very lopsided with a much brighter edge at the lower right. Near the center of the ring is a Wolf-Rayet star, a massive, hot, short-lived star that generates an intense stellar wind. In fact, Wolf-Rayet stars are known to create nebulae with interesting shapes as their powerful winds sweep up surrounding interstellar material. In this case, the bright edge was thought to indicate a bow shock produced as the star plowed through a uniform medium, like a boat through water. But measurements have shown the star is not really moving directly toward the bright edge. So a more likely explanation is that the material surrounding the star is not uniform, but clumped and denser near the bright edge of windblown NGC 3199. (Text taken from APOD)

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rat156
rat156
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NGC 3199, 





    
        

            rat156