by amyth91 » Sat Nov 28, 2015 2:20 am
Image Credit: Jonathan Green (
https://goo.gl/8tUz5c) and Amit Ashok Kamble (
https://goo.gl/pbtWvG) / Auckland Astronomical Society (
https://goo.gl/Z16tQU)
The Small Magellanic cloud is a satellite galaxy of the Milky Way, it is thought to be about 200,000 light-years from the Sun, and about 75,000 light-years from the Large Magellanic cloud, that's pretty close by galactic Standards, The Small Magellanic cloud is clasified as an irregular dwarf galaxy, careful observations of the proper motions of it's stars show that it is stretched out along the line of sight, probably due to gravitational interactions with the Milky Way and the Large Magellanic cloud. The Small Magellanic cloud is an important object in astronomical history, it was by measuring the brightness of stars in this galaxy from
photographic plates that Henrietta Leavitt discovered the period-luminosity relation of Cepheid variables.
To the right of the Small Magellanic cloud you will see the second brightest globular cluster in the sky 47 Tucanae, when you look at 47 Tucanae what you are seeing is the light of one million stars packed into a volume of space just 120 light-years across, that makes the heart of 47 Tucanae a very crowded place indeed! 47 Tucanae is thought to be around 16,000 light-years away from the Sun, so as you can see it is completely unrelated to the Small Magellanic cloud and just happens to occupy the same area of sky as the much more distant dwarf galaxy.
The image is the result of another collaboration between Astrophotographers Jonathan Green and Amit Kamble, Jonathan captured the image data and Amit processed the image in
PixInsight.
The image is made up from 23 x 1 minute exposures captured with a Canon 60da at ISO1250 through a Canon 200 mm lens set at f/3.2, 21 dark frames were subtracted for calibration and the stars were tracked using a iOptron sky Guider mount.
Image Credit: Jonathan Green & Amit Kamble
- The Small Magellanic Cloud and 47 Tucanae
Image Credit: Jonathan Green ([url]https://goo.gl/8tUz5c[/url]) and Amit Ashok Kamble ([url]https://goo.gl/pbtWvG[/url]) / Auckland Astronomical Society ([url]https://goo.gl/Z16tQU[/url])
The Small Magellanic cloud is a satellite galaxy of the Milky Way, it is thought to be about 200,000 light-years from the Sun, and about 75,000 light-years from the Large Magellanic cloud, that's pretty close by galactic Standards, The Small Magellanic cloud is clasified as an irregular dwarf galaxy, careful observations of the proper motions of it's stars show that it is stretched out along the line of sight, probably due to gravitational interactions with the Milky Way and the Large Magellanic cloud. The Small Magellanic cloud is an important object in astronomical history, it was by measuring the brightness of stars in this galaxy from
photographic plates that Henrietta Leavitt discovered the period-luminosity relation of Cepheid variables.
To the right of the Small Magellanic cloud you will see the second brightest globular cluster in the sky 47 Tucanae, when you look at 47 Tucanae what you are seeing is the light of one million stars packed into a volume of space just 120 light-years across, that makes the heart of 47 Tucanae a very crowded place indeed! 47 Tucanae is thought to be around 16,000 light-years away from the Sun, so as you can see it is completely unrelated to the Small Magellanic cloud and just happens to occupy the same area of sky as the much more distant dwarf galaxy.
The image is the result of another collaboration between Astrophotographers Jonathan Green and Amit Kamble, Jonathan captured the image data and Amit processed the image in
PixInsight.
The image is made up from 23 x 1 minute exposures captured with a Canon 60da at ISO1250 through a Canon 200 mm lens set at f/3.2, 21 dark frames were subtracted for calibration and the stars were tracked using a iOptron sky Guider mount.
Image Credit: Jonathan Green & Amit Kamble
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