Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: A.S.I.G.N_Baz on Aug 30, 2011, 12:34:35

Title: Our neighbouring galaxies
Post by: A.S.I.G.N_Baz on Aug 30, 2011, 12:34:35
The Large Magellanic Cloud (LMC) is a nearby irregular galaxy, and is a satellite of the Milky Way. At a distance of slightly less than 50 kiloparsecs (≈160,000 light-years), the LMC is the third closest galaxy to the Milky Way. It has a mass equivalent to approximately 10 billion times the mass of our Sun (1010 solar masses), making it roughly 1/100 as massive as the Milky Way, and a diameter of about 14,000 light-years.

The Small Magellanic Cloud (SMC) is a dwarf galaxy with a diameter of about 7,000 light-years and contains several hundred million stars. It has a total mass of approximately 7 billion times the mass of our Sun.
At a distance of about 200,000 light-years, it is one of the Milky Way's nearest neighbors. It is also one of the most distant objects that can be seen with the naked eye.

Each image is a stack of around 8 subframes of five minutes each. Taken with a 5DMK II and 70-200 f/4L at 70mm. Star tracking was done with the camera mounted to my EQ6 pro telescope mount. (http://"http://www.asignobservatory.com/index.php?option=com_content&view=article&id=43")

(http://i54.tinypic.com/30j0ack.jpg)

(http://i54.tinypic.com/f07p60.jpg)

(http://i55.tinypic.com/a4vrkn.jpg)
Title: Re: Our neighbouring galaxies
Post by: PhilB on Aug 30, 2011, 18:39:31
Both the LMC and SMC must look incredible in a telescope, to say nothing of NGC104 (47 Tucanae) and NGC 362 Globular Clusters that you've also captured with the SMC.  Is there a little vignetting to the left of both images? Still very nice work though.
Title: Re: Our neighbouring galaxies
Post by: A.S.I.G.N_Baz on Aug 30, 2011, 22:31:46
Quote from: PhilB on Aug 30, 2011, 18:39:31
Both the LMC and SMC must look incredible in a telescope, to say nothing of NGC104 (47 Tucanae) and NGC 362 Globular Clusters that you've also captured with the SMC.  Is there a little vignetting to the left of both images? Still very nice work though.
Yes it is a little vignetting, but it's not through a telescope. Its a 70-200mm Canon lens. :)