The Milky Way - a photo on Flickriver

The Milky Way

Often when I'm busy doing Deep Sky Astrophotography with my Telescope, I put my old camera on a tripod, and just randomly point it at an interesting section of the sky and shoot short unassisted wide angle lens time-lapse sequences.

About this image:
This image consists of 50 x 30 sec. ISO 3200 stacked exposures of a section of the Carina–Sagittarius Arm of our Milky Way Galaxy, photographed with my old Nikon D7000 and 10mm-20mm Sigma Lens (in the semi-dark rural skies of the Freestate Province in South Africa). Our Solar System lies in Orion Arm (a minor spiral Arm of the Milky Way Galaxy).

About the Milky Way:
The Milky Way Galaxy is estimated to have over 400 billion stars. Stars are suns, and just like in our Solar System, many of the stars have planets and moons. Our sun is a middle aged Yellow Dwarf star, located in the Orion Arm (or Orion Spur) of the Milky Way Galaxy. It’s a minor side spiral arm, located between two larger arms of the Milky Way Galaxy's spiral. The Milky Way is merely one mid-sized barred spiral Galaxy, amongst over 100 billion other Galaxies in the observable Universe. When we look up at the night sky from Earth, we see a glimpse of the Carina–Sagittarius Arm of the Milky Way Galaxy. It takes about 250 million years for the Milky Way Galaxy's spiral arms to complete one rotation.

Astrometry Info:
View an Anannotated Sky Chart for this image, including the Constellations visible in the Southern Hemisphere during April.

Center RA, Dec: 235.053, -43.832
Center RA, hms: 15h 40m 12.699s
Center Dec, dms: -43° 49' 56.400"
Size: 86.7 x 58.8 deg
Radius: 52.390 deg
Pixel scale: 195 arcsec/pixel

View this image in the World Wide Telescope.

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2017-06-18

Martin
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Taken on: April 29, 2017

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Milky Way

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Southern Africa

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Carina–Sagittarius Arm

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Camera: Nikon D7000, f/4.0, 30 sec, 10mm (=15mm), ISO 3200 (more info) (hide info)

Camera:	Nikon D7000
Lens:	10.0-20.0 mm f/4.0-5.6
Aperture:	f/4.0
Exposure Time:	30
Focal Length:	10mm (35mm equivalent: 15mm)
ISO:	3200
Exposure Bias:	-1/3 EV
Flash:	Off, Did not fire
Exposure Program:	Manual
Exposure Mode:	Manual
Metering Mode:	Multi-segment
White Balance:	Manual
Scene Capture Type:	Landscape
Gain Control:	High gain up
Sharpness:	Hard
Color Space:	Uncalibrated
Software:	Adobe Photoshop CS6 (Windows)
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