This is Messier 8, the Lagoon Nebula. It’s
a bright (magitude +6.0) emission nebula that’s divided by a lane of
dark intersteller gas. It’s located about 4,000 lightyears away
from us. M8 is believed to be an area of star formation.
Under very dark and clear skies, M8 can be
observed with the naked eye. It will appear as a gray smudge just
to the west and south of Saturn. Use a pair of binoculars
or a telescope to bring out its color and the band of dark gas.
While you are looking for M8, you might run into
M20, the Trifid Nebula. It is just to the west of Saturn and
right above M8!
M20 is a combination of an emission nebula, (the
red parts), a reflection nebula, (the blue parts), and a dark nebula,
(the black portions that appear to divide the nebula into smaller
pieces.) It’s about 5,000 lightyears away and has a visual
magnitude of +6.2. It’s smaller than M8, so you will probably
have a difficult time trying to find it with your naked eye, but it is
very easy to view with good binoculars or a small telescope. If
you’re a Star Trek fan, you have probably seen images of M20 in some of
What to look for in September 2018.
Just like August, September starts with Venus,
Jupiter, Saturn and Mars all visible and forming an arc across the
evening sky! That arc is called the Ecliptic. The Ecliptic is the
plane the planets follow as they orbit around the sun.
September features some very major nebula
action. In addition to the Trifid and Lagoon Nebula (M8), the
Eagle (M16) and Omega (M17) nebulae are also visible slightly higher in
that same band of the Milky Way. All four nebulae are bright
objects that you should be able to see with a decent pair of
In the middle of the sky, you can find M27 and
M57, the Dumbbell and Ring Nebulae. To the north, there are a great
collection of nebulae, including the North American Nebula, the Veil
Nebula, and the Elephant Trunk Nebula.
September does not have any major meteor showers.
Last Quarter is September 2
New Moon is the September 9
1st Quarter is the September 16
Full Moon is September 24
Lebing is a retired computer scientist with the U.S. Geological Survey
in Washington, D.C. He has visited Hatteras Island since the
mid-1970s. He and his wife, Karen, have owned property here for several
years and moved to their home in Waves full-time in 2013.
Astronomy is a subject that Gerry says he has always been interested in
and one that he pursues seriously -- he's built an small observatory
next to his house. You can send him questions about the night sky
through e-mail, [email protected].)