Categories: Astrophotos

Astrophoto: M-81 by Tom Davis

Image credit: M-81 by Tom Davis.
Draw a line from the left bottom star through the top right star of the
Big Dipper’s bowl then extend it roughly the same distance upward and you’ll see the location of this magnificent winter galaxy, the eighty first entry in Charles Messier’s catalog, known as M-81. It was first identified in the late 1700’s by German astronomer Johann Bode, so it’s also sometimes knownn as Bode’s Nebula.

Located only 12 million light years from Earth, a relative stone’s throw by intergalactic distances, M-81 is one of the brightest galaxies visible from in the night sky and can be spotted from a dark site, far from any city lights, without need for any optical assistance.

This picture was photographed by astrophotographer Tom Davis, from his Inkom, Idaho home in late January 2006 during a clear-sky break in an otherwise cloudy winter season. Tom photographed through a six inch, f/7 Astro-Physics refractor with a SBIG ST-10XME three mega-pixel camera.

M-81 exhibits beautifully symmetrical spiral arms and numerous dark lanes of dust in this 2.5 hour exposure. Some of these dusty ribbons may be evidence of interaction with its companion galaxy, M-82, which also shows signs of disturbance that is thought to be caused by M-81.

Do you have photos you’d like to share? Post them to the Universe Today astrophotography forum or email them, and we might feature one in Universe Today.

Written by R. Jay GaBany

Fraser Cain

Fraser Cain is the publisher of Universe Today. He's also the co-host of Astronomy Cast with Dr. Pamela Gay. Here's a link to my Mastodon account.

Recent Posts

The First Close-Up Picture of Star Outside the Milky Way

Like a performer preparing for their big finale, a distant star is shedding its outer…

13 hours ago

Here’s What We Know About Earth’s Temporary Mini-Moon

For a little over a month now, the Earth has been joined by a new…

14 hours ago

New Study Suggests Black Holes Get their “Hair” from their Mothers

Despite decades of study, black holes are still one of the most puzzling objects in…

15 hours ago

Gaze at New Pictures of the Sun from Solar Orbiter

74 million kilometres is a huge distance from which to observe something. But 74 million…

15 hours ago

Are Fast Radio Bursts Caused by Interstellar Objects Crashing Into Neutron Stars?

Astronomers have only been aware of fast radio bursts for about two decades. These are…

20 hours ago

Here’s How to Weigh Gigantic Filaments of Dark Matter

How do you weigh one of the largest objects in the entire universe? Very carefully,…

22 hours ago