Longitude (symbol l) measures the angular distance of an object eastward along the galactic equator from the galactic center. Analogous to terrestrial longitude, galactic longitude is usually measured in degrees (°).
Galactic latitude
Latitude (symbol b) measures the angular distance of an object perpendicular to the galactic equator, positive to the north, negative to the south. For example, the north galactic pole has a latitude of +90°. Analogous to terrestrial latitude, galactic latitude is usually measured in degrees (°).
Definition
The first Galactic coordinate system was used by William Herschel in 1785. A number of different coordinate systems, each differing by a few degrees, were used until 1932, when Lund Observatory assembled a set of conversion tables that defined a standard Galactic coordinate system based on a North pole at RA 12h40m, Dec +28° (in the 1900.0 epoch convention) and a 0° longitude at the point where the Galactic plane and the Celestial plane intersected.
A quick explanation on the Galactic coordinate system.
published: 18 Dec 2015
Galactic Coordinates
I talk about a system I created (and never used) for using galactic coordinates of stellar systems as their names.
published: 18 Oct 2024
Galactic Sphere, Declination, Right Ascension
published: 17 Jun 2017
Where is it? Celestial coordinates explained
What's the difference between RA/DEC and Alt/Az? Why use both? In this video I will explain what a coordinate system is, and why we often use both an equatorial coordinate system (RA/DEC) and a horizontal coordinate system (Alt/Az) in amateur astronomy. This is part of a series called Five Minute Fridays where I will be explaining one concept in under five minutes each week. #fiveminutefridays #nebulaphotos
Book recommendation-- Longitude by Dava Sobel: https://amzn.to/3itld5o
=============================
Supporting this channel:
=============================
◦ I'm on Patreon: https://patreon.com/nebulaphotos
◦ One-time donations: https://paypal.me/nebulaphotos
◦ Shopping for astrophotography gear, you can use my affiliate links:
High Point Scientific: https://tinyurl.com/highpoint-neb...
published: 11 Jun 2021
Teach Astronomy - Galactic Coordinates
http://www.teachastronomy.com/
Astronomers use a special set of coordinates to define the position of objects within the Milky Way galaxy. The galactic equator runs along the center of the Milky Way band. Galactic longitude, abbreviated by the small letter L, is the angular distance along the Milky Way with zero at the galactic center in the Sagittarius region. L equals ninety degrees is in the constellation of Cygnus near the top of the Northern Cross. L equals a hundred and eighty degrees, opposite to the galactic center, also called the anti-center direction, is in the constellation Taurus near the Pleiades and Hyades clusters, and L equals two hundred and seventy is south of Canis Major. Galactic latitude, denoted by the small letter B, is defined to be zero on the galactic equato...
published: 23 Jul 2010
Unveiling the Universe: Understanding Galactic Coordinates
00:00 • Introduction - Unveiling the Universe: Understanding Galactic Coordinates
00:44 • What Are Galactic Coordinates?
01:29 • The Components of Galactic Coordinates
02:16 • The Importance of Galactic Coordinates in Astronomy
Equatorial Coordinate System Explained: How Astronomers Navigate the Celestial Sphere
How astronomers define coordinates in the sky using Right Ascension and Declination.
-~-~~-~~~-~~-~-
Watch next: Solar Orbiter Discovers Surprising new Phenomenon in the Sun
https://www.youtube.com/watch?v=VOrl2QlPCMI
-~-~~-~~~-~~-~-
published: 14 Feb 2018
Galactic Coordinate System
http://demonstrations.wolfram.com/GalacticCoordinateSystem
The Wolfram Demonstrations Project contains thousands of free interactive visualizations, with new entries added daily.
The galactic coordinate system is based on spherical coordinates centered at the Sun and oriented towards the galactic center. The whole of the galaxy serves as a reference plane with Coma Berenices as the north galactic pole. A different system, the ec...
Contributed by: Margot Brouwer
Audio created with WolframTones:
http://tones.wolfram.com
published: 26 Dec 2012
Antenna Beam in Galactic Coordinates
Antenna Beam in Galactic Coordinates. The antenna is pointing up at the sky at 27 S latitude. The time steps are 1 hr in LST time as the earth rotates and points the antenna at different parts of the sky.
What's the difference between RA/DEC and Alt/Az? Why use both? In this video I will explain what a coordinate system is, and why we often use both an equatorial...
What's the difference between RA/DEC and Alt/Az? Why use both? In this video I will explain what a coordinate system is, and why we often use both an equatorial coordinate system (RA/DEC) and a horizontal coordinate system (Alt/Az) in amateur astronomy. This is part of a series called Five Minute Fridays where I will be explaining one concept in under five minutes each week. #fiveminutefridays #nebulaphotos
Book recommendation-- Longitude by Dava Sobel: https://amzn.to/3itld5o
=============================
Supporting this channel:
=============================
◦ I'm on Patreon: https://patreon.com/nebulaphotos
◦ One-time donations: https://paypal.me/nebulaphotos
◦ Shopping for astrophotography gear, you can use my affiliate links:
High Point Scientific: https://tinyurl.com/highpoint-nebula
OPT: https://bit.ly/31XDk9d
Agena Astro: https://tinyurl.com/agena-nebula
Amazon: https://amzn.to/31rYb56
Modification service at Astrogear.net: https://www.astrogear.net/?ref=nebulaphotos
◦ You can use my referral code when buying subscriptions to Astrobin:
New accounts- www.astrobin.com/accounts/register/?r=NEBULAPHOTOS
Existing accounts- Use Promo Code: NEBULAPHOTOS
=============================
Social:
=============================
Twitter: @nebulaphotos
Instagram: @nebulaphotosdotcom
Astrobin: https://www.astrobin.com/users/2ghouls/
=============================
Creative Commons Media:
=============================
Celestial Sphere by ChristianReady, CC BY-SA 4.0, via Wikimedia Commons
Ra and Dec on celestial sphere by Tfr000 CC BY-SA 3.0 via Wikimedia Commons
Ra and dec demo by Tfr000, CC BY-SA 3.0, via Wikimedia Commons
What's the difference between RA/DEC and Alt/Az? Why use both? In this video I will explain what a coordinate system is, and why we often use both an equatorial coordinate system (RA/DEC) and a horizontal coordinate system (Alt/Az) in amateur astronomy. This is part of a series called Five Minute Fridays where I will be explaining one concept in under five minutes each week. #fiveminutefridays #nebulaphotos
Book recommendation-- Longitude by Dava Sobel: https://amzn.to/3itld5o
=============================
Supporting this channel:
=============================
◦ I'm on Patreon: https://patreon.com/nebulaphotos
◦ One-time donations: https://paypal.me/nebulaphotos
◦ Shopping for astrophotography gear, you can use my affiliate links:
High Point Scientific: https://tinyurl.com/highpoint-nebula
OPT: https://bit.ly/31XDk9d
Agena Astro: https://tinyurl.com/agena-nebula
Amazon: https://amzn.to/31rYb56
Modification service at Astrogear.net: https://www.astrogear.net/?ref=nebulaphotos
◦ You can use my referral code when buying subscriptions to Astrobin:
New accounts- www.astrobin.com/accounts/register/?r=NEBULAPHOTOS
Existing accounts- Use Promo Code: NEBULAPHOTOS
=============================
Social:
=============================
Twitter: @nebulaphotos
Instagram: @nebulaphotosdotcom
Astrobin: https://www.astrobin.com/users/2ghouls/
=============================
Creative Commons Media:
=============================
Celestial Sphere by ChristianReady, CC BY-SA 4.0, via Wikimedia Commons
Ra and Dec on celestial sphere by Tfr000 CC BY-SA 3.0 via Wikimedia Commons
Ra and dec demo by Tfr000, CC BY-SA 3.0, via Wikimedia Commons
http://www.teachastronomy.com/
Astronomers use a special set of coordinates to define the position of objects within the Milky Way galaxy. The galactic equator...
http://www.teachastronomy.com/
Astronomers use a special set of coordinates to define the position of objects within the Milky Way galaxy. The galactic equator runs along the center of the Milky Way band. Galactic longitude, abbreviated by the small letter L, is the angular distance along the Milky Way with zero at the galactic center in the Sagittarius region. L equals ninety degrees is in the constellation of Cygnus near the top of the Northern Cross. L equals a hundred and eighty degrees, opposite to the galactic center, also called the anti-center direction, is in the constellation Taurus near the Pleiades and Hyades clusters, and L equals two hundred and seventy is south of Canis Major. Galactic latitude, denoted by the small letter B, is defined to be zero on the galactic equator. The direction B equals plus ninety is straight up out of the disk in the northern sky, and B equals minus ninety degrees is the opposite direction, straight out of the disk in the southern sky.
http://www.teachastronomy.com/
Astronomers use a special set of coordinates to define the position of objects within the Milky Way galaxy. The galactic equator runs along the center of the Milky Way band. Galactic longitude, abbreviated by the small letter L, is the angular distance along the Milky Way with zero at the galactic center in the Sagittarius region. L equals ninety degrees is in the constellation of Cygnus near the top of the Northern Cross. L equals a hundred and eighty degrees, opposite to the galactic center, also called the anti-center direction, is in the constellation Taurus near the Pleiades and Hyades clusters, and L equals two hundred and seventy is south of Canis Major. Galactic latitude, denoted by the small letter B, is defined to be zero on the galactic equator. The direction B equals plus ninety is straight up out of the disk in the northern sky, and B equals minus ninety degrees is the opposite direction, straight out of the disk in the southern sky.
00:00 • Introduction - Unveiling the Universe: Understanding Galactic Coordinates
00:44 • What Are Galactic Coordinates?
01:29 • The Components of Galactic Coor...
00:00 • Introduction - Unveiling the Universe: Understanding Galactic Coordinates
00:44 • What Are Galactic Coordinates?
01:29 • The Components of Galactic Coordinates
02:16 • The Importance of Galactic Coordinates in Astronomy
00:00 • Introduction - Unveiling the Universe: Understanding Galactic Coordinates
00:44 • What Are Galactic Coordinates?
01:29 • The Components of Galactic Coordinates
02:16 • The Importance of Galactic Coordinates in Astronomy
How astronomers define coordinates in the sky using Right Ascension and Declination.
-~-~~-~~~-~~-~-
Watch next: Solar Orbiter Discovers Surprising new Phenome...
How astronomers define coordinates in the sky using Right Ascension and Declination.
-~-~~-~~~-~~-~-
Watch next: Solar Orbiter Discovers Surprising new Phenomenon in the Sun
https://www.youtube.com/watch?v=VOrl2QlPCMI
-~-~~-~~~-~~-~-
How astronomers define coordinates in the sky using Right Ascension and Declination.
-~-~~-~~~-~~-~-
Watch next: Solar Orbiter Discovers Surprising new Phenomenon in the Sun
https://www.youtube.com/watch?v=VOrl2QlPCMI
-~-~~-~~~-~~-~-
http://demonstrations.wolfram.com/GalacticCoordinateSystem
The Wolfram Demonstrations Project contains thousands of free interactive visualizations, with new e...
http://demonstrations.wolfram.com/GalacticCoordinateSystem
The Wolfram Demonstrations Project contains thousands of free interactive visualizations, with new entries added daily.
The galactic coordinate system is based on spherical coordinates centered at the Sun and oriented towards the galactic center. The whole of the galaxy serves as a reference plane with Coma Berenices as the north galactic pole. A different system, the ec...
Contributed by: Margot Brouwer
Audio created with WolframTones:
http://tones.wolfram.com
http://demonstrations.wolfram.com/GalacticCoordinateSystem
The Wolfram Demonstrations Project contains thousands of free interactive visualizations, with new entries added daily.
The galactic coordinate system is based on spherical coordinates centered at the Sun and oriented towards the galactic center. The whole of the galaxy serves as a reference plane with Coma Berenices as the north galactic pole. A different system, the ec...
Contributed by: Margot Brouwer
Audio created with WolframTones:
http://tones.wolfram.com
Antenna Beam in Galactic Coordinates. The antenna is pointing up at the sky at 27 S latitude. The time steps are 1 hr in LST time as the earth rotates and point...
Antenna Beam in Galactic Coordinates. The antenna is pointing up at the sky at 27 S latitude. The time steps are 1 hr in LST time as the earth rotates and points the antenna at different parts of the sky.
Antenna Beam in Galactic Coordinates. The antenna is pointing up at the sky at 27 S latitude. The time steps are 1 hr in LST time as the earth rotates and points the antenna at different parts of the sky.
What's the difference between RA/DEC and Alt/Az? Why use both? In this video I will explain what a coordinate system is, and why we often use both an equatorial coordinate system (RA/DEC) and a horizontal coordinate system (Alt/Az) in amateur astronomy. This is part of a series called Five Minute Fridays where I will be explaining one concept in under five minutes each week. #fiveminutefridays #nebulaphotos
Book recommendation-- Longitude by Dava Sobel: https://amzn.to/3itld5o
=============================
Supporting this channel:
=============================
◦ I'm on Patreon: https://patreon.com/nebulaphotos
◦ One-time donations: https://paypal.me/nebulaphotos
◦ Shopping for astrophotography gear, you can use my affiliate links:
High Point Scientific: https://tinyurl.com/highpoint-nebula
OPT: https://bit.ly/31XDk9d
Agena Astro: https://tinyurl.com/agena-nebula
Amazon: https://amzn.to/31rYb56
Modification service at Astrogear.net: https://www.astrogear.net/?ref=nebulaphotos
◦ You can use my referral code when buying subscriptions to Astrobin:
New accounts- www.astrobin.com/accounts/register/?r=NEBULAPHOTOS
Existing accounts- Use Promo Code: NEBULAPHOTOS
=============================
Social:
=============================
Twitter: @nebulaphotos
Instagram: @nebulaphotosdotcom
Astrobin: https://www.astrobin.com/users/2ghouls/
=============================
Creative Commons Media:
=============================
Celestial Sphere by ChristianReady, CC BY-SA 4.0, via Wikimedia Commons
Ra and Dec on celestial sphere by Tfr000 CC BY-SA 3.0 via Wikimedia Commons
Ra and dec demo by Tfr000, CC BY-SA 3.0, via Wikimedia Commons
http://www.teachastronomy.com/
Astronomers use a special set of coordinates to define the position of objects within the Milky Way galaxy. The galactic equator runs along the center of the Milky Way band. Galactic longitude, abbreviated by the small letter L, is the angular distance along the Milky Way with zero at the galactic center in the Sagittarius region. L equals ninety degrees is in the constellation of Cygnus near the top of the Northern Cross. L equals a hundred and eighty degrees, opposite to the galactic center, also called the anti-center direction, is in the constellation Taurus near the Pleiades and Hyades clusters, and L equals two hundred and seventy is south of Canis Major. Galactic latitude, denoted by the small letter B, is defined to be zero on the galactic equator. The direction B equals plus ninety is straight up out of the disk in the northern sky, and B equals minus ninety degrees is the opposite direction, straight out of the disk in the southern sky.
00:00 • Introduction - Unveiling the Universe: Understanding Galactic Coordinates
00:44 • What Are Galactic Coordinates?
01:29 • The Components of Galactic Coordinates
02:16 • The Importance of Galactic Coordinates in Astronomy
How astronomers define coordinates in the sky using Right Ascension and Declination.
-~-~~-~~~-~~-~-
Watch next: Solar Orbiter Discovers Surprising new Phenomenon in the Sun
https://www.youtube.com/watch?v=VOrl2QlPCMI
-~-~~-~~~-~~-~-
http://demonstrations.wolfram.com/GalacticCoordinateSystem
The Wolfram Demonstrations Project contains thousands of free interactive visualizations, with new entries added daily.
The galactic coordinate system is based on spherical coordinates centered at the Sun and oriented towards the galactic center. The whole of the galaxy serves as a reference plane with Coma Berenices as the north galactic pole. A different system, the ec...
Contributed by: Margot Brouwer
Audio created with WolframTones:
http://tones.wolfram.com
Antenna Beam in Galactic Coordinates. The antenna is pointing up at the sky at 27 S latitude. The time steps are 1 hr in LST time as the earth rotates and points the antenna at different parts of the sky.
Longitude (symbol l) measures the angular distance of an object eastward along the galactic equator from the galactic center. Analogous to terrestrial longitude, galactic longitude is usually measured in degrees (°).
Galactic latitude
Latitude (symbol b) measures the angular distance of an object perpendicular to the galactic equator, positive to the north, negative to the south. For example, the north galactic pole has a latitude of +90°. Analogous to terrestrial latitude, galactic latitude is usually measured in degrees (°).
Definition
The first Galactic coordinate system was used by William Herschel in 1785. A number of different coordinate systems, each differing by a few degrees, were used until 1932, when Lund Observatory assembled a set of conversion tables that defined a standard Galactic coordinate system based on a North pole at RA 12h40m, Dec +28° (in the 1900.0 epoch convention) and a 0° longitude at the point where the Galactic plane and the Celestial plane intersected.