Astronomy Picture of the Day |
APOD: 2023 August 7 – The Pelican Nebula in Gas, Dust, and Stars
Explanation:
The Pelican Nebula is slowly being transformed.
IC 5070 (the official designation) is divided from the larger
North America Nebula by a
molecular cloud filled with dark
dust.
The
Pelican,
however, receives much study because it is a particularly active mix of
star formation and evolving gas clouds.
The featured picture
was produced in three specific colors -- light emitted by
sulfur,
hydrogen, and
oxygen --
that can help us to better understand these interactions.
The light from young energetic stars is slowly transforming
the cold gas to hot gas,
with the advancing boundary
between the two, known as an
ionization front, visible in bright orange on the right.
Particularly dense
tentacles of cold gas remain.
Millions of years from now, the
Pelican nebula,
bounded by dark nebula
LDN 935, might no longer be known as the
Pelican,
as the balance and placement of stars and gas
will surely leave something that appears
completely different.
APOD: 2022 October 11 - Stars, Dust, Pillars, and Jets in the Pelican Nebula
Explanation:
What dark structures arise within the Pelican Nebula?
On the whole, the nebula appears like a bird
(a pelican)
and is seen toward the constellation of a different bird:
Cygnus, a Swan.
But inside, the Pelican Nebula is a place lit up by new stars and
befouled by dark dust.
Smoke-sized
dust grains start as
simple carbon compounds formed in the
cool atmospheres of young stars but are dispersed by
stellar winds and
explosions.
Two impressive Herbig-Haro jets are seen emitted by the star HH 555 on the right,
and these jets are helping to
destroy the
light year-long dust
pillar that contains it.
Other pillars and jets are also visible.
The featured image was
scientifically-colored
to emphasize light emitted by small amounts of
heavy elements in a nebula made predominantly of the light elements
hydrogen and
helium.
The Pelican Nebula (IC 5067 and IC 5070) is about 2,000
light-years away and can be found with a small telescope
to the northeast of the bright star
Deneb.
APOD: 2022 September 8 - North America and the Pelican
Explanation:
Fans of our fair planet
might recognize the outlines of these
cosmic
clouds.
On the left, bright emission outlined by dark, obscuring dust lanes
seems to trace a continental shape, lending the popular name
North America Nebula
to the emission region cataloged as NGC 7000.
To the right, just off the North America Nebula's east coast,
is IC 5070, whose avian
profile suggests
the
Pelican Nebula.
The two bright nebulae are about 1,500 light-years away,
part of the same
large and complex
star forming region, almost as nearby as the
better-known Orion Nebula.
At that distance, the 3 degree wide field of view would span
80 light-years.
This careful cosmic portrait
uses narrowband images combined to highlight the bright
ionization fronts
and the characteristic glow from atomic hydrogen, and oxygen
gas.
These nebulae can be seen with binoculars from a dark location.
Look northeast of bright star
Deneb in Cygnus the Swan, soaring high in the northern summer
night sky.
APOD: 2021 September 16 - North America and the Pelican
Explanation:
Fans of our fair planet
might recognize the outlines of these
cosmic clouds.
On the left, bright emission outlined by dark, obscuring dust lanes
seems to trace a continental shape, lending the popular name
North America Nebula
to the emission region cataloged as NGC 7000.
To the right, just off the North America Nebula's east coast,
is IC 5070, whose avian
profile suggests
the
Pelican Nebula.
The two bright nebulae are about 1,500 light-years away,
part of the same
large and complex
star forming region, almost as nearby as the
better-known Orion Nebula.
At that distance, the 3 degree wide field of view would span
80 light-years.
This careful cosmic portrait
uses
narrow band
images combined to highlight the bright
ionization fronts
and the characteristic glow from atomic hydrogen, sulfur, and oxygen gas.
These nebulae can be seen with binoculars from a dark location.
Look northeast of bright star
Deneb in the constellation Cygnus the Swan.
APOD: 2021 March 16 - IC 1318: The Butterfly Nebula in Gas and Dust
Explanation:
In the constellation of the
swan near the nebula of the pelican lies the
gas cloud of the butterfly
next to a star known as the hen.
That star, given the proper name
Sadr,
is just to the right of the featured frame, but the central
Butterfly Nebula, designated
IC 1318, is shown in high resolution.
The intricate patterns in the bright gas and
dark dust are caused by complex interactions between
interstellar winds,
radiation pressures, magnetic fields, and gravity.
The
featured telescopic view captures
IC 1318's
characteristic emission from ionized
sulfur,
hydrogen, and
oxygen atoms mapped to the
red, green, and blue hues of the popular
Hubble Palette.
The portion of the Butterfly Nebula pictured spans about 100
light years
and lies about 4000 light years away.
APOD: 2021 March 1 - The Pelican Nebula in Red and Blue
Explanation:
The Pelican Nebula is changing.
The entire nebula, officially designated IC 5070, is divided from the larger
North America Nebula by a
molecular cloud filled with dark
dust.
The
Pelican,
however, is particularly interesting because it is an unusually active mix of
star formation and evolving gas clouds.
The featured picture
was processed to bring out two main colors, red and blue, with the
red dominated by light emitted by interstellar
hydrogen.
Ultraviolet light emitted by young energetic stars is slowly
transforming cold gas in the nebula to hot gas,
with the advancing boundary
between the two, known as an
ionization front, visible in bright red
across the image center.
Particularly dense
tentacles of cold gas remain.
Millions of years from now this nebula might no longer
be known as the
Pelican,
as the balance and placement of stars and gas
will surely leave something that
appears completely different.
APOD: 2021 February 11 - Cygnus Mosaic 2010 2020
Explanation:
In brush strokes
of interstellar dust and glowing gas,
this beautiful skyscape is painted across the plane of our
Milky Way Galaxy
near the northern end of the Great Rift and
the constellation Cygnus the Swan.
Composed over a decade
with 400 hours of image data, the broad mosaic spans an impressive
28x18 degrees across the sky.
Alpha star of Cygnus, bright, hot, supergiant
Deneb
lies at the left.
Crowded with stars and luminous gas clouds Cygnus is also home
to the dark, obscuring Northern Coal Sack Nebula and the
star forming emission regions NGC 7000,
the North America Nebula and
IC 5070, the Pelican Nebula, just left and a little below Deneb.
Many other
nebulae and star clusters are identifiable
throughout the cosmic scene.
Of course, Deneb itself is
also known to northern hemisphere skygazers for its place in two
asterisms,
marking a vertex of the
Summer Triangle,
the top of the
Northern Cross.
APOD: 2021 January 29 - North American Nightscape
Explanation:
On January 21, light from the Moon near first quarter illuminated the
foreground in this snowy mountain and night scene.
Known as The Lions, the striking pair of mountain peaks are north of
Vancouver,
British Colombia, Canada, North America, planet Earth.
Poised above the twin summits, left of Deneb alpha star of
the constellation Cygnus, are emission regions
NGC 7000 and IC 5070.
Part of a large star forming complex about 1,500 light-years from Vancouver,
they shine with the characteristic red glow of atomic hydrogen gas.
Outlines of the bright emission regions suggest their popular names,
The North America Nebula and The Pelican Nebula.
The well-planned, deep nightscape
is a composite of
consecutive exposures made with a modified digital camera and telephoto lens.
Foreground exposures were made with camera fixed to a tripod,
background exposures were made tracking the sky.
The result preserves sharp natural detail and reveals a
range of brightness and color that your eye
can't quite see on its own.
APOD: 2020 November 30 - Cygnus Without Stars
Explanation:
The sky is filled with faintly glowing gas, though it can take a
sensitive camera and telescope to see it.
For example, this twelve-degree-wide view of the
northern part of the constellation
Cygnus
reveals a complex array of cosmic clouds of gas
along the plane of our
Milky Way galaxy.
The featured mosaic of telescopic images was recorded through two
filters: an
H-alpha
filter that transmits only visible red light from
glowing hydrogen atoms,
and a blue filter that transmits primarily light emitted by the slight
amount of
energized oxygen.
Therefore, in this 18-hour exposure image, blue areas are
hotter than red.
Further digital processing has removed the myriad of point-like Milky Way stars from the scene.
Recognizable bright nebulas include
NGC 7000 (North America Nebula), and
IC 5070 (Pelican Nebula) on the left with
IC 1318 (Butterfly Nebula) and
NGC 6888 (Crescent Nebula) on the right --
but others can be found throughout the wide field.
APOD: 2020 August 26 - Cygnus Skyscape
Explanation:
In brush strokes
of interstellar dust and glowing
hydrogen gas,
this beautiful skyscape is painted across the plane of our
Milky Way Galaxy
near the northern end of the Great Rift and
the constellation Cygnus the Swan.
Composed using 22 different images and over 180 hours
of image data, the widefield mosaic spans an impressive
24 degrees across the sky.
Alpha star of Cygnus, bright, hot, supergiant
Deneb
lies near top center.
Crowded with stars and luminous gas clouds Cygnus is also home
to the dark, obscuring
Northern Coal Sack Nebula, extending from Deneb
toward the center of the view.
The reddish glow of star forming regions NGC 7000 and IC 5070, the
North America Nebula and Pelican Nebulas, are just left of Deneb.
The Veil Nebula is a
standout below and left of center.
A supernova remnant, the Veil is some 1,400
light years away,
but many other nebulae and star clusters are
identifiable
throughout the cosmic scene.
Of course,
Deneb itself is
also known to northern hemisphere skygazers for its place in two
asterisms --
marking the top of the
Northern Cross and
a vertex of the
Summer Triangle.
APOD: 2019 September 25 - The Pelican Nebula in Gas, Dust, and Stars
Explanation:
The Pelican Nebula is slowly being transformed.
IC 5070, the official designation, is divided from the larger
North America Nebula by a
molecular cloud filled with dark
dust.
The
Pelican,
however, receives much study because it is a particularly active mix of
star formation and evolving gas clouds.
The featured picture
was produced in three specific colors -- light emitted by
sulfur,
hydrogen, and
oxygen --
that can help us to better understand these interactions.
The light from young energetic stars is slowly transforming the cold gas to hot gas,
with the advancing boundary
between the two, known as an
ionization front, visible in bright orange on the right.
Particularly dense
tentacles of cold gas remain.
Millions of years from now this nebula might no longer
be known as the
Pelican,
as the balance and placement of stars and gas
will surely leave something that appears completely different.
APOD: 2019 July 25 - Cygnus Skyscape
Explanation:
In brush strokes
of interstellar dust and glowing
hydrogen gas,
this beautiful skyscape is painted across the plane of our
Milky Way Galaxy
near the northern end of the Great Rift and
the constellation Cygnus the Swan.
Composed with three different telescopes and about 90 hours
of image data the widefield mosaic spans an impressive
24 degrees across the sky.
Alpha star of Cygnus, bright, hot, supergiant
Deneb
lies near top center.
Crowded with stars and luminous gas clouds Cygnus is also home
to the dark, obscuring Northern Coal Sack Nebula, extending from Deneb
toward the center of the view.
The reddish glow of star forming regions NGC 7000, the
North America Nebula and
IC 5070, the Pelican Nebula, are just left of Deneb.
The Veil Nebula is
a standout below and left of center.
A supernova remnant, the Veil is some 1,400 light years away,
but many other nebulae and star clusters are
identifiable
throughout the cosmic scene.
Of course, Deneb itself is
also known to northern hemisphere skygazers for its place in two
asterisms --
marking the top of the
Northern Cross and
a vertex of the
Summer Triangle.
APOD: 2017 December 1 - North America and the Pelican
Explanation:
Fans of our fair planet
might recognize the outlines of these
cosmic clouds.
On the left, bright emission outlined by dark, obscuring dust lanes
seems to trace a continental shape,
lending the popular name
North
America Nebula to the emission region cataloged as NGC 7000.
To the right, just off the North America Nebula's east coast,
is IC 5070, whose profile suggests the Pelican
Nebula.
The two bright nebulae are about 1,500 light-years away,
part of the same large
and complex star forming region, almost as nearby as the
better-known Orion Nebula.
At that distance, the 6 degree wide field of view would span
150 light-years.
This careful
cosmic portrait uses narrow band images
to highlight the bright
ionization fronts and the characteristic
red glow from atomic hydrogen gas.
These
nebulae can be seen with binoculars from a dark location.
Look northeast of bright star
Deneb in the constellation of Cygnus the Swan.
APOD: 2017 August 3 - Pelican Nebula Close Up
Explanation:
The prominent ridge of emission featured in
this
vivid skyscape is designated IC 5067.
Part of a larger emission region with a distinctive shape, popularly called
The Pelican Nebula, the ridge spans about
10 light-years and follows the curve of the cosmic pelican's head and neck.
Fantastic, dark shapes inhabiting the view are clouds of cool gas and dust
sculpted
by energetic radiation from young, hot, massive stars.
But stars are also forming within the dark shapes.
Twin jets emerging from the tip of the long, dark tendril left of
center are the telltale signs of an embedded protostar cataloged as
Herbig-Haro 555
(HH 555).
In fact, other
Herbig-Haro
objects indicating the presence of protostars are found
within the frame.
The Pelican Nebula itself, also known as IC 5070,
is about 2,000 light-years away.
To find it, look northeast of bright
star Deneb in the high flying
constellation Cygnus.
APOD: 2016 November 19 - IC 5070: A Dusty Pelican in the Swan
Explanation:
The recognizable profile of the Pelican Nebula
soars nearly 2,000 light-years away in the high flying constellation
Cygnus,
the Swan.
Also known as IC 5070,
this interstellar cloud of gas and dust is appropriately found
just off the "east coast"
of the North America Nebula
(NGC 7000), another surprisingly familiar looking emission nebula
in Cygnus.
Both Pelican and North America nebulae are part of the
same large and
complex star forming region, almost as nearby as the
better-known Orion Nebula.
From our vantage point, dark dust clouds (upper left) help define
the Pelican's eye and long bill, while a
bright front of ionized gas
suggests the curved shape of the head and neck.
This striking synthesized color view utilizes
narrowband image data recording the emission of hydrogen and
oxygen atoms in the cosmic cloud.
The scene spans
some 30 light-years at the estimated distance of the Pelican Nebula.
APOD: 2016 June 14 - The North America and Pelican Nebulas
Explanation:
Here lie familiar shapes in
unfamiliar
locations.
On the left is an
emission nebula cataloged as NGC 7000,
famous partly because it resembles our fair planet's continent of
North America.
The emission region to the right of the
North America Nebula
is IC 5070, also known for its suggestive outlines
as the Pelican Nebula.
Separated by a dark cloud of
obscuring dust,
the two bright nebulae are about 1,500
light-years away.
At that distance, the 4 degree wide field of view spans
100 light-years.
This spectacular cosmic portrait combines
narrow band images
to highlight bright
ionization fronts with fine details of
dark, dusty forms in silhouette.
Emission from atomic
hydrogen,
sulfur, and
oxygen is captured in
the narrow band image in
scientifically assigned colors.
These nebulae can be
seen with binoculars from a
dark location.
APOD: 2016 May 26 - IC 5067 in the Pelican Nebula
Explanation:
The prominent ridge of emission featured in
this sharp, colorful skyscape
is cataloged as IC 5067.
Part of a larger
emission
nebula with a distinctive shape, popularly called
The Pelican Nebula, the ridge spans about
10 light-years following the
curve of the cosmic pelican's head and neck.
This false-color
view also translates the pervasive glow of narrow
emission lines from atoms in the nebula to a
color palette made popular in
Hubble Space Telescope images of star forming regions.
Fantastic, dark shapes inhabiting the 1/2 degree wide field
are clouds of cool gas and dust sculpted by the winds and radiation
from hot, massive stars.
Close-ups of some of the sculpted clouds show clear
signs
of newly forming stars.
The Pelican Nebula, itself cataloged as IC 5070, is about
2,000 light-years away.
To find it, look northeast of bright
star Deneb in the
high flying constellation Cygnus.
APOD: 2015 November 17 - The Pelican Nebula in Gas Dust and Stars
Explanation:
The Pelican Nebula is slowly being transformed.
IC 5070, the official designation, is divided from the larger
North America Nebula by a
molecular cloud filled with dark
dust.
The
Pelican,
however, receives much study because it is a particularly active mix of
star formation and evolving gas clouds.
The featured picture
was produced in three specific colors -- light emitted by
sulfur,
hydrogen, and
oxygen --
that can help us to better understand these interactions.
The light from young energetic stars is slowly transforming the cold gas to hot gas,
with the advancing boundary
between the two, known as an
ionization front, visible in bright orange on the right.
Particularly dense
tentacles of cold gas remain.
Millions of years from now this nebula might no longer
be known as the
Pelican,
as the balance and placement of stars and gas
will surely leave something that appears completely different.
APOD: 2015 March 4 - Pillars and Jets in the Pelican Nebula
Explanation:
What dark structures arise from the Pelican Nebula?
Visible as a bird-shaped nebula toward the constellation of a bird
(Cygnus, the Swan),
the Pelican Nebula is a place dotted with newly formed stars but
fouled with dark dust.
These smoke-sized
dust grains formed in the cool atmospheres of young stars and were dispersed by
stellar winds and
explosions.
Impressive Herbig-Haro jets are seen emitted by a star on the right that is helping to
destroy the
light year-long dust
pillar that contains it.
The featured image was
scientifically-colored to emphasize light emitted by small amounts of
ionized
nitrogen,
oxygen, and
sulfur in the nebula made predominantly of
hydrogen and
helium.
The Pelican Nebula (IC 5067 and IC 5070) is about 2,000 light-years away and can be found with a small telescope to the northeast of the bright star
Deneb.
APOD: 2013 September 3 - North America and the Pelican
Explanation:
Here lie familiar shapes in
unfamiliar
locations.
On the left is an emission
nebula
cataloged as NGC 7000,
famous partly because it resembles our fair planet's continent of
North America.
The emission region to the right of the
North America Nebula
is IC 5070, also known for its suggestive outlines
as the Pelican Nebula.
Separated by a dark cloud of
obscuring dust,
the two bright nebulae are about 1,500 light-years away.
At that distance, the 4 degree wide field of view spans
100 light-years.
This spectacular cosmic portrait combines
narrow band images
to highlight bright
ionization fronts with fine details of
dark, dusty forms in silhouette.
Emission from atomic hydrogen, sulfur, and oxygen is captured in
the narrow band data.
These nebulae can be
seen with binoculars from a dark location.
Look northeast of bright star
Deneb in the constellation of Cygnus the Swan.
APOD: 2013 August 22 - IC 5067 in the Pelican Nebula
Explanation:
The prominent ridge of emission featured in
this dramatic skyscape
is cataloged as IC 5067.
Part of a larger
emission
nebula with a distinctive shape, popularly called
The Pelican Nebula, the ridge spans about
10 light-years following the
curve of the cosmic pelican's head and neck.
This false color
view also translates the pervasive glow of narrow
emission lines from atoms in the nebula to a
color palette made popular in
Hubble Space Telescope images of star forming regions.
Fantastic, dark shapes inhabiting the 1/2 degree wide field
are clouds of cool gas and dust sculpted by the winds and radiation
from hot, massive stars.
Close-ups of some of the sculpted clouds show clear
signs
of newly forming stars.
The Pelican Nebula, itself cataloged as IC 5070, is about
2,000 light-years away.
To find it, look northeast of bright
star Deneb in the
high flying constellation Cygnus.
APOD: 2012 November 30 - Clouds in Cygnus
Explanation:
Cosmic clouds of gas and dust
drift across this magnificent
mosaic covering a 12x12 degree field within the
high flying constellation Cygnus.
The collaborative skyscape, a combination of broad and narrow
band image data presented in the
Hubble palette, is anchored by
bright, hot, supergiant
star Deneb,
below center near the left edge.
Alpha star of Cygnus, Deneb, is the top of the Northern Cross asterism
and is seen here next to the dark void known as the Northern Coal Sack.
Below Deneb are the recognizable
North America and Pelican nebulae
(NGC 7000 and IC 5070).
Another supergiant star, Sadr (Gamma Cygni)
is near the center of the field
just above the bright wings of the Butterfly Nebula.
A line continuing up and right will encounter
the more compact Crescent Nebula and finally
the Tulip Nebula near the
top of the frame.
Most of these complex nebulosities are located
about 2,000 light-years away.
Along with the Sun, they lie in the
Orion
spiral arm of our Milky Way galaxy.
APOD: 2011 November 26 - Pelican Nebula Close Up
Explanation:
The prominent ridge of emission featured in
this vivid skyscape
is designated IC 5067.
Part of a larger
emission
nebula with a distinctive shape, popularly called
The Pelican Nebula, the ridge spans about
10 light-years and follows the
curve of the cosmic pelican's head and neck.
The Pelican Nebula close-up was constructed from narrowband data
mapping emission
from sulfur, hydrogen, and oxygen atoms to
red, green, and blue colors.
Fantastic, dark shapes inhabiting the view
are clouds of cool gas and dust
sculpted
by energetic radiation from young, hot, massive stars.
But stars are also forming within the dark shapes.
In fact, twin jets
emerging from the tip of the long,
dark tendril below center are the
telltale signs of
an embedded protostar cataloged as
Herbig-Haro 555.
The Pelican Nebula itself, also known as IC 5070,
is about 2,000 light-years away.
To find it, look northeast of bright
star Deneb in the
high flying constellation Cygnus.
APOD: 2010 December 18 - North America and the Pelican
Explanation:
Here lie familiar shapes in
unfamiliar
locations.
On the left is an emission
nebula
cataloged as NGC 7000,
famous partly because it resembles our fair planet's continent of
North America.
The emission region to the right of the
North America Nebula
is IC 5070, also known for its suggestive outlines
as the Pelican Nebula.
Separated by a dark cloud of obscuring dust, the two bright nebulae
are about 1,500 light-years away.
At that distance, the 4 degree wide field of view spans
100 light-years.
This spectacular cosmic portrait combines
narrow band images of the
region in a false-color palette to highlight bright
ionization fronts with fine details of
dark, dusty forms in silhouette.
Emission from atomic hydrogen, sulfur, and oxygen is captured in
the narrow band data.
These nebulae can be
seen with binoculars from a dark location.
Look northeast of bright star
Deneb in the constellation Cygnus the Swan.
APOD: 2010 November 19 - Nebulae in the Northern Cross
Explanation:
Explore a beautiful and complex region of nebulae strewn along
the plane of our Milky Way Galaxy
in this widefield skyscape.
The image emphasizes cosmic gas clouds in a 25 by 25 degree view centered
on the Northern Cross, the famous
asterism
in the constellation Cygnus.
Bright, hot, supergiant
star Deneb
at the top of the cross,
Sadr near the center, and beautiful
Albireo
run diagonally through the scene.
Popular telescopic tour destinations
such as the
North America and
Pelican emission regions, the
Butterfly
Nebula (IC 1318), and the
Crescent
and Veil nebulae
can be identified by placing your cursor over the image.
Silhouetted by the glowing
interstellar
clouds and crowded star
fields, the dark
Northern Coal Sack also stands out, part
of a series of obscuring dust clouds forming the
Great Rift in the Milky Way.
These Northern Cross nebulosities are all located about 2,000 light-years
away.
Along with the Sun, they lie within the
Orion
spiral arm of our galaxy.
APOD: 2010 August 19 - Pelican Nebula Close Up
Explanation:
The prominent ridge of emission featured in
this vivid
skyscape is designated IC 5067.
Part of a larger
emission
nebula with a distinctive shape, popularly called
The Pelican Nebula, the ridge spans about
10 light-years and follows the
curve of the cosmic pelican's head and neck.
Fantastic, dark shapes inhabiting the view
are clouds of cool gas and dust
sculpted by
energetic radiation from hot, massive stars.
But stars are also forming within the dark shapes.
In fact, twin jets emerging from the tip of the central,
dark tendril
are the telltale signs of an embedded protostar cataloged as
Herbig-Haro
555.
The Pelican Nebula itself, also known as IC 5070,
is about 2,000 light-years away.
To find it, look northeast of bright
star Deneb in the
high flying constellation Cygnus.
APOD: 2009 June 30 - The North America and Pelican Nebulae
Explanation:
Here are some familiar shapes in unfamiliar locations.
This
emission nebula on the left
is famous partly because it resembles Earth's continent of
North America.
To the right of the
North America Nebula, cataloged as NGC 7000,
is a less luminous nebula that resembles a
pelican dubbed the
Pelican Nebula.
The two emission
nebula
measure about 50 light-years across, are located about 1,500
light-years away, and are separated by a
dark absorption cloud.
This spectacular image captures the nebulas, bright
ionization fronts, and fine details of the dark dust.
The nebulae can be seen with binoculars from a dark location.
Look for a
small nebular patch
north-east of bright star
Deneb in the constellation of Cygnus.
It is still unknown which star or stars
ionize the red-glowing
hydrogen gas.
APOD: 2008 April 24 - Cygnus Without Stars
Explanation:
The sky is full of hydrogen, though it can take a
sensitive camera and telescope to see it.
For example, this twelve-degree-wide view of the
northern part
of the constellation
Cygnus
reveals cosmic clouds of
hydrogen gas
along the plane
of our Milky Way galaxy.
The mosaic of
telescopic images was recorded through an
h-alpha filter that transmits only visible red light from
glowing hydrogen atoms.
Further digital processing has removed most of what is left
of the myriad, point-like Milky Way stars from the scene, though
bright Deneb, alpha star of
Cygnus and head of the Northern Cross, remains near top center.
Recognizable bright nebulae include
NGC 7000 (North America Nebula), and
IC 5070 (Pelican Nebula) at the upper left with
IC 1318 (Butterfly Nebula) and
NGC 6888 (Crescent Nebula) at lower right --
but others can be found throughout the wide field.
Want the stars back? Just slide your cursor over the picture.
APOD: 2007 October 19 - IC 5067 in the Pelican Nebula
Explanation:
The prominent ridge of emission featured in
this dramatic skyscape
is cataloged as IC 5067.
Part of a larger
emission
nebula with a distinctive shape, popularly called
The Pelican Nebula, the ridge spans about
10 light-years following the
curve of the cosmic pelican's head and neck.
This false color
view also translates the pervasive glow of narrow
emission lines from atoms in the nebula to a
color palette made popular in
Hubble Space Telescope images of star forming regions.
Fantastic, dark shapes inhabiting the 1/2 degree wide field
are clouds of cool gas and dust sculpted by the winds and radiation
from hot, massive stars.
Close-ups
of some of the sculpted clouds show clear
signs
of newly forming stars.
The Pelican Nebula, itself cataloged as IC 5070, is about
2,000 light-years away.
To find it, look northeast of bright
star Deneb in the
high flying constellation Cygnus.
APOD: 2007 September 20 - Northern Cygnus
Explanation:
Bright, hot, supergiant
star Deneb lies at top center in this
gorgeous
skyscape.
The 20 frame mosaic spans an impressive 12 degrees across the northern end of
Cygnus
the Swan.
Crowded with stars and luminous gas clouds
along the plane
of our Milky Way Galaxy, Cygnus is also home to the dark,
obscuring Northern Coal Sack Nebula, extending from Deneb
toward the bottom center of the view.
The reddish glow of NGC 7000, the
North America Nebula,
and IC 5070, the Pelican Nebula,
are at the upper left, but many other
nebulae and star clusters are
identifiable
throughout the wide field.
Of course, Deneb itself is the alpha star of Cygnus and is
also known to northern hemisphere skygazers for its place in two
asterisms --
marking the top of the
Northern Cross and
a vertex of the
Summer
Triangle.
APOD: 2007 July 2 - Zooming in to the Pelican Nebula
Explanation:
Where is the Pelican Nebula?
APOD
features many objects in the night sky,
but usually does not have the resources to show where
each one lies.
Today, thanks to inventive digital manipulations of
Filipe Alves, it is possible to show you exactly where
the photogenic Pelican Nebula
can be found.
Clicking on the arrow
will cause many browsers to download and play a spectacular
movie that zooms from the perspective of an unaided human eye
to that of a powerful telescope.
The observatory dome visible on the right is part of
Calar
Alto Observatory
in southern Spain.
The image zooms into the
constellation
of Cygnus, passes the
greater Pelican Nebula (IC 5070), and settles on a
dust structure in the
Pelican head
housing unborn stars.
Alternatively, the movie is also available
here.
APOD: 2006 December 27 - IC 5067: Emission Nebula Close up
Explanation:
This
amazing skyscape lies along a bright ridge of emission in
IC 5067, also known as
The Pelican Nebula.
Appropriately, the Pelican Nebula itself is part of a much larger,
complex star-forming region about 2,000 light-years away in
the high flying constellation
Cygnus, the Swan.
Cosmic dust clouds that span light-years seem to rise like mountains
in the mist in this natural color view, recorded through broadband
filters to produce an
analogy to human
color vision.
The fantastic shapes are sculpted by winds and
radiation from a hot, massive stars and the dominant
red emission is due to atomic hydrogen gas.
Placing your cursor on the image will bring up a false color image of
the
nebula made through narrowband filters that also map specific emission
from sulfur and oxygen atoms.
The mapped color image reveals even
more details of the cosmic
clouds and their composition.
APOD: 2006 November 30 - A Pelican in the Swan
Explanation:
The Pelican Nebula lies about 2,000 light-years
away in the high flying constellation
Cygnus, the Swan.
Also known as IC 5070,
this cosmic pelican is appropriately found
just off the "east coast" of
the North America Nebula
(NGC 7000), another surprisingly familiar looking
emission nebula in Cygnus.
The Pelican
and North America nebulae are part of the
same large and
complex star forming region, almost as nearby as the
better-known Orion Nebula.
From our vantage point,
dark dust clouds (upper left) help define
the Pelican's eye and long bill, while a
bright front of ionized gas
suggests the curved shape of the head and neck.
Based on digitized black and white images from the
Samuel
Oschin Telescope at Palomar Observatory,
this striking
synthesized color view includes two bright foreground
stars and spans about 30 light-years at the estimated distance
of the Pelican Nebula.
APOD: 2006 August 16 - The North America and Pelican Nebulas
Explanation:
Here are some familiar shapes in unfamiliar locations.
This
emission nebula on the left
is famous partly because it resembles Earth's continent of North America.
To the right of the
North America Nebula, cataloged as
NGC 7000, is a less luminous nebula that resembles a
pelican dubbed the
Pelican Nebula.
The two emission
nebula measure about 50 light-years across,
are located about 1500
light-years away, and are separated by a
dark absorption cloud.
This spectacular image captures, in false color, the nebulas, bright
ionization fronts, and fine details of the dark dust.
The nebulae can be seen with binoculars from a dark location.
Look for a
small nebular patch
north-east of bright star
Deneb in the constellation of Cygnus.
It is still unknown which star or stars
ionize the red-glowing
hydrogen gas.
APOD: 2004 July 28 - A Cygnus Star Field
Explanation:
In the constellation of the
swan near the nebula of the
pelican lies the gas cloud of the
butterfly surrounding a star known as the
hen.
That star, given the proper name
Sadr, is visible to the unaided eye but found here
as the brightest object on the upper left.
Sadr, at 1500 light years distant, is near the center of the
Butterfly Nebula (IC 1318) in a bright region given the comparatively staid label of IC 1318B.
The
fantastic starfield that surrounds
Sadr
contains stars old and young, an
open cluster of stars
(NGC 6910
visible on the image left), vast clouds of
hydrogen gas that glow red,
and picturesque pockets and filaments of dark
dust.
The above image is a digital fusion of several different
color images of the gamma Cygni (Sadr) region
APOD: 2003 October 23 - Cygnus Nebulosities
Explanation:
Looking toward the constellation
Cygnus,
a stunning and complex region of nebulae strewn along
the plane of our
Milky Way
galaxy is revealed in this unique
wide-angle sky view.
Recorded with a filter designed to transmit
light emitted by hydrogen atoms,
the image emphasizes
cosmic gas clouds in a 34 by 23 degree field centered
on the well known Northern Cross asterism.
Bright, hot, supergiant
star
Deneb (the top of the cross)
and popular
celestial sights such as the North
America and Pelican
emission regions, the IC 1318
"butterfly",
and the Crescent
and Veil nebulae
can be identified by placing your cursor over the image.
Silhouetted by the glowing
interstellar
clouds and crowded star
fields, the dark Northern Coal Sack is also visible, part
of a series of obscuring dust clouds forming the Great Rift
in
the Milky Way.
These Cygnus nebulosities are all located about 2,000 light-years
away.
Along with the Sun, they lie within the
Orion
spiral arm of our galaxy.
APOD: 2003 October 13 - Pelican Nebula Ionization Front
Explanation:
What's happening to the
Pelican Nebula?
The light from young energetic stars is slowly transforming the
Pelican's cold gas to hot gas,
with the advancing boundary between the two known as an
ionization front.
Most of these bright stars lie off the top of the image,
but part of the bright ionization front crosses on the upper right.
Particularly dense and
intricate filaments of cold gas
are visible along the front.
Millions of years from now this nebula might
no longer be known as the
Pelican, as the balance and placement of
stars and gas will leave something that appears completely different.
The above image was taken with the
Mayall 4-meter telescope at
Kitt Peak National Observatory
in Arizona,
USA.
The large circular artifact below the image center is not real.
The nebula, also known as
IC 5070, spans about 30 light years and lies about 1800
light years away toward the constellation of
Cygnus.
APOD: 2002 August 29 - The Pelican in the Swan
Explanation:
The Pelican Nebula, also known as IC 5070, lies about 2,000 light-years
away in the high and far-off
constellation of Cygnus, the Swan.
This picture spans a portion
of the magnificent nebula about 30 light-years wide.
Fittingly, this cosmic
pelican is found
just off the east "coast" of
the North America Nebula,
another surprisingly familiar looking
emission nebula in Cygnus.
In fact, the Pelican and North America nebulae are part of the same
large star forming region.
The two glowing
nebulae appear separated from our vantage point
by a large obscuring dust cloud running across the upper
left corner in this
gorgeous
color view.
Within the
Pelican
Nebula, dark dust clouds also help define
the eye and long bill, while a
bright front of ionized gas
suggests the curved shape of the head and neck.
Even though it is almost as close as the
Orion Nebula,
the stellar nursery marked by the Pelican and North America
nebulae has
proven complex and difficult to study.
APOD: 2000 July 3 - Pelican Nebula Ionization Front
Explanation:
The Pelican Nebula is slowly being transformed.
IC 5070, the official designation, is divided from the larger
North America Nebula by a
molecular cloud filled with dark
dust.
The
Pelican, however, receives much study because it
is a particularly active mix of
star formation and
evolving gas clouds.
The
above picture was produced in two specific colors
to better understand these interactions.
Here, hot
hydrogen
gas glows in red, while cooler
Sulfur glows blue-green.
The light from young energetic stars is slowly
transforming the cold gas to hot gas,
with the advancing boundary
between the two known as an
ionization front.
Particularly dense filaments of cold gas are seen to still remain.
Millions of years from now this nebula might no longer
be known as the
Pelican,
as the balance and placement of stars and gas
will leave something that appears completely different.
APOD: 2000 May 1 - The North America Nebula
Explanation:
Here's a familiar shape in an unfamiliar location!
This
emission nebula
is famous partly because it resembles Earth's continent of North America.
To the right of the
North America Nebula, cataloged as
NGC 7000, is a less luminous
Pelican Nebula.
The two emission
nebula measure about 50 light-years across,
are located about 1500
light-years away, and are separated by a
dark absorption cloud.
The nebulae can be seen with binoculars from a dark location.
Look for a
small nebular patch
north-east of bright star
Deneb in the constellation of Cygnus.
It is still unknown which star or stars
ionize the red-glowing
hydrogen gas.
APOD: June 6, 1996 - The North America Nebula
Explanation:
Here's a familiar shape in an unfamiliar location! This
emission nebula is
famous partly because it resembles
Earth's
North American Continent. To the
right of the North America Nebula is a less luminous Pelican Nebula. Let's
be grateful that
pelicans
aren't really that large! The two emission
nebula are located about 1500 light years away and are separated by a
dark absorption cloud.
The nebulae can be seen without a telescope from a
dark location. Look for a small nebular patch north-east of
Deneb in the
constellation
of Cygnus. It is still unknown which star or stars ionize the
red-glowing hydrogen gas.