In astronomy, a celestial coordinate system is a system for specifying positions of celestial objects: satellites, planets, stars, galaxies, and so on. Coordinate systems can specify a position in 3-dimensional space, or merely the direction of the object on the celestial sphere, if its distance is not known or not important.
The coordinate systems are implemented in either spherical coordinates or rectangular coordinates. Spherical coordinates, projected on the celestial sphere, are analogous to the geographic coordinate system used on the surface of the Earth. These differ in their choice of fundamental plane, which divides the celestial sphere into two equal hemispheres along a great circle. Rectangular coordinates, in appropriate units, are simply the cartesian equivalent of the spherical coordinates, with the same fundamental (x, y) plane and primary (x-axis) direction. Each coordinate system is named for its choice of fundamental plane.
Coordinate systems
The following table lists the common coordinate systems in use by the astronomical community. The fundamental plane divides the celestial sphere into two equal hemispheres and defines the baseline for the latitudinal coordinates, similar to the equator in the geographic coordinate system. The poles are located at ±90° from the fundamental plane. The primary direction is the starting point of the longitudinal coordinates. The origin is the zero distance point, the "center of the celestial sphere", although the definition of celestial sphere is ambiguous about the definition of its center point.
In geometry, a coordinate system is a system which uses one or more numbers, or coordinates, to uniquely determine the position of a point or other geometric element on a manifold such as Euclidean space. The order of the coordinates is significant and they are sometimes identified by their position in an ordered tuple and sometimes by a letter, as in "the x-coordinate". The coordinates are taken to be real numbers in elementary mathematics, but may be complex numbers or elements of a more abstract system such as a commutative ring. The use of a coordinate system allows problems in geometry to be translated into problems about numbers and vice versa; this is the basis of analytic geometry.
Common coordinate systems
Number line
The simplest example of a coordinate system is the identification of points on a line with real numbers using the number line. In this system, an arbitrary point O (the origin) is chosen on a given line. The coordinate of a point P is defined as the signed distance from O to P, where the signed distance is the distance taken as positive or negative depending on which side of the line P lies. Each point is given a unique coordinate and each real number is the coordinate of a unique point.
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
Astronomical Coordinates
Describes the various coordinate systems used by astronomers, with a focus on the celestial coordinate system used in astronomical catalogues (also called equatorial coordinates) and how these are transformed to an azimuth and altitude (also know as an elevation).
published: 17 Jan 2023
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
Terrestrial/Celestial Spheres Coordinate Systems Tutorial
This video explains the coordinate systems used in celestial navigation, with an overview of the terrestrial and celestial spheres.
This video is part of a series that teaches celestial navigation using techniques that have been used for centuries. In this course, you will learn some basics needed to find your location using a sextant and elementary math.
This course is free and available to everyone, and should take less than two hours to complete.
The course is hosted by Vanderbilt University at:
https://my.vanderbilt.edu/astronav/
published: 14 Jan 2015
Which way is up? Celestial coordinate systems EXPLAINED!
Welcome to my channel! I'm Dr Maggie Lieu and I make youtube videos about space & astronomy. Have you ever wondered why there's no single definition of up? In this video, you'll find out why exactly that is and how you can calculate your own definition of up in various different coordinate systems.
Extra reading:
Media credits:
Earth: Google Earth
ISS tour: NASA
ISS flythrough: NASA
If you enjoyed the video, please help me by liking, sharing and subscribing! I'm also on:
twitter: https://twitter.com/space_mog
instagram: https://instagram.com/space_mog/
facebook: https://facebook.com/spacemog/
published: 31 May 2020
The Sky Part 1: Local Sky and Alt-Az / Horizon Coordinates
In this video, we break down the basics of the sky around us, and understand how to locate specific locations on the sky using the horizon coordinate or altitude azimuth (Alt-Az) coordinate system
-~-~~-~~~-~~-~-
Watch next: Solar Orbiter Discovers Surprising new Phenomenon in the Sun
https://www.youtube.com/watch?v=VOrl2QlPCMI
-~-~~-~~~-~~-~-
published: 15 Sep 2017
Astronomy - Ch. 2: Understanding the Night Sky (8 of 23) Understanding Celestial Coordinates
Visit http://ilectureonline.com for more math and science lectures!
In this video I will explain the coordinates of the celestial sphere.
published: 31 Aug 2014
Celestial Coordinate System
published: 21 Nov 2019
Right Ascension versus Declination
Learn the similarities and differences between right ascension and declination, which are both types of celestial coordinates.
Chapters:
0:00 - Introduction to Right Ascension and Declination
2:00 - Animation of Celestial Sphere
2:56 - Definition of Right Ascension
3:28 - Definition of Declination
4:07 - Venn Diagram comparison of Right Ascension and Declination
5:55 - Shadow of Mauna Kea (from my days as a volunteer in Hawaii)
6:31 - Scavenger Hunt Challenge -- Find the star and video about it on my channel
Links and Resources Mentioned in this video:
▶ Lyra Constellation: http://bit.ly/LearntheSky-LyraHarpConstellation
▶ Albireo Star: http://bit.ly/LearntheSky-AlbireoStarCygnus
▶ Download Free STARGAZING Guide: https://www.learnthesky.com/opt-in-stargazing-starter-guide
Playlists
...
published: 01 May 2021
The Celestial Coordinate Systems Dr.Jayakrishnan K
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
Describes the various coordinate systems used by astronomers, with a focus on the celestial coordinate system used in astronomical catalogues (also called eq...
Describes the various coordinate systems used by astronomers, with a focus on the celestial coordinate system used in astronomical catalogues (also called equatorial coordinates) and how these are transformed to an azimuth and altitude (also know as an elevation).
Describes the various coordinate systems used by astronomers, with a focus on the celestial coordinate system used in astronomical catalogues (also called equatorial coordinates) and how these are transformed to an azimuth and altitude (also know as an elevation).
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
-~-~~-~~~-~~-~-
This video explains the coordinate systems used in celestial navigation, with an overview of the terrestrial and celestial spheres.
This video is part of a seri...
This video explains the coordinate systems used in celestial navigation, with an overview of the terrestrial and celestial spheres.
This video is part of a series that teaches celestial navigation using techniques that have been used for centuries. In this course, you will learn some basics needed to find your location using a sextant and elementary math.
This course is free and available to everyone, and should take less than two hours to complete.
The course is hosted by Vanderbilt University at:
https://my.vanderbilt.edu/astronav/
This video explains the coordinate systems used in celestial navigation, with an overview of the terrestrial and celestial spheres.
This video is part of a series that teaches celestial navigation using techniques that have been used for centuries. In this course, you will learn some basics needed to find your location using a sextant and elementary math.
This course is free and available to everyone, and should take less than two hours to complete.
The course is hosted by Vanderbilt University at:
https://my.vanderbilt.edu/astronav/
Welcome to my channel! I'm Dr Maggie Lieu and I make youtube videos about space & astronomy. Have you ever wondered why there's no single definition of up? In t...
Welcome to my channel! I'm Dr Maggie Lieu and I make youtube videos about space & astronomy. Have you ever wondered why there's no single definition of up? In this video, you'll find out why exactly that is and how you can calculate your own definition of up in various different coordinate systems.
Extra reading:
Media credits:
Earth: Google Earth
ISS tour: NASA
ISS flythrough: NASA
If you enjoyed the video, please help me by liking, sharing and subscribing! I'm also on:
twitter: https://twitter.com/space_mog
instagram: https://instagram.com/space_mog/
facebook: https://facebook.com/spacemog/
Welcome to my channel! I'm Dr Maggie Lieu and I make youtube videos about space & astronomy. Have you ever wondered why there's no single definition of up? In this video, you'll find out why exactly that is and how you can calculate your own definition of up in various different coordinate systems.
Extra reading:
Media credits:
Earth: Google Earth
ISS tour: NASA
ISS flythrough: NASA
If you enjoyed the video, please help me by liking, sharing and subscribing! I'm also on:
twitter: https://twitter.com/space_mog
instagram: https://instagram.com/space_mog/
facebook: https://facebook.com/spacemog/
In this video, we break down the basics of the sky around us, and understand how to locate specific locations on the sky using the horizon coordinate or altitud...
In this video, we break down the basics of the sky around us, and understand how to locate specific locations on the sky using the horizon coordinate or altitude azimuth (Alt-Az) coordinate system
-~-~~-~~~-~~-~-
Watch next: Solar Orbiter Discovers Surprising new Phenomenon in the Sun
https://www.youtube.com/watch?v=VOrl2QlPCMI
-~-~~-~~~-~~-~-
In this video, we break down the basics of the sky around us, and understand how to locate specific locations on the sky using the horizon coordinate or altitude azimuth (Alt-Az) coordinate system
-~-~~-~~~-~~-~-
Watch next: Solar Orbiter Discovers Surprising new Phenomenon in the Sun
https://www.youtube.com/watch?v=VOrl2QlPCMI
-~-~~-~~~-~~-~-
Learn the similarities and differences between right ascension and declination, which are both types of celestial coordinates.
Chapters:
0:00 - Introduction t...
Learn the similarities and differences between right ascension and declination, which are both types of celestial coordinates.
Chapters:
0:00 - Introduction to Right Ascension and Declination
2:00 - Animation of Celestial Sphere
2:56 - Definition of Right Ascension
3:28 - Definition of Declination
4:07 - Venn Diagram comparison of Right Ascension and Declination
5:55 - Shadow of Mauna Kea (from my days as a volunteer in Hawaii)
6:31 - Scavenger Hunt Challenge -- Find the star and video about it on my channel
Links and Resources Mentioned in this video:
▶ Lyra Constellation: http://bit.ly/LearntheSky-LyraHarpConstellation
▶ Albireo Star: http://bit.ly/LearntheSky-AlbireoStarCygnus
▶ Download Free STARGAZING Guide: https://www.learnthesky.com/opt-in-stargazing-starter-guide
Playlists
▶ Stargazing Basics: http://bit.ly/LearntheSky-StargazingBasics
▶ Zodiacal Constellations: http://bit.ly/LearntheSky-ZodiacalConstellations
▶ Circumpolar Constellations: http://bit.ly/LearntheSky-Circumpolar
▶ Winter Constellations: http://bit.ly/LearntheSky-WinterConstellations
▶ Spring Constellations: http://bit.ly/LearntheSky-SpringConstellations
▶ Summer Constellations: http://bit.ly/LearntheSky-SummerConstellations
▶ Autumn Constellations: http://bit.ly/LearntheSky-AutumnConstellations
▶ Stars: http://bit.ly/LearntheSky-Stars
▶ Planets: http://bit.ly/LearntheSky-Planets
▶ Celestial Objects: http://bit.ly/LearntheSky-CelestialObjects
▶ Versus Videos: http://bit.ly/LearntheSky-VersusVideos
▶ Celestial Events: http://bit.ly/LearntheSky-CelestialEvents
▶ Citizen Science: http://bit.ly/LearntheSky-CitizenScience
Photo Attributions
▶ Corvus Map: By IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg) - [1], CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=15406356
▶ Sydney Hall - Urania’s Mirror: By Sidney Hall - This image is available from the United States Library of Congress’s Prints and Photographs division under the digital ID cph.3g10053.This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing for more information., Public Domain, https://commons.wikimedia.org/w/index.php?curid=31685073
▶ Antennae Galaxies - NGC 4038 and 4039: By By ESA/Hubble, CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=29570547
▶ NGC 4361: By Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of ▶ Arizona - http://www.caelumobservatory.com/gallery/n4361.shtml, CC BY-SA 3.0 us, https://commons.wikimedia.org/w/index.php?curid=20607639
▶ Constellation Photos: Akira Fujii - The Constellations http://www.davidmalin.com/fujii/general/af_const1.html
▶ Lyra Constellation Map: By IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg) - [1], CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=15407534
▶ Right Ascension and Declination Animationr: By Tfr000 (talk) 20:50, 17 April 2012 (UTC) - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=19127102
▶ Right Ascension and Declination Diagram: By Tfr000 (talk) 15:34, 15 June 2012 (UTC) - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=19907447
▶ Ursa Major Constellation Map: By IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg) - http://www.iau.org/public/themes/constellations/#uma, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=15412501
Support this Channel
▶ Patreon: https://www.patreon.com/learnthesky
▶ Online Classes: https://www.learnthesky.com/store
Never Miss a Video
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▶ Business Enquiries: [email protected]
#learnthesky #stargazing #constellations #stars #keeplookingup
Learn the similarities and differences between right ascension and declination, which are both types of celestial coordinates.
Chapters:
0:00 - Introduction to Right Ascension and Declination
2:00 - Animation of Celestial Sphere
2:56 - Definition of Right Ascension
3:28 - Definition of Declination
4:07 - Venn Diagram comparison of Right Ascension and Declination
5:55 - Shadow of Mauna Kea (from my days as a volunteer in Hawaii)
6:31 - Scavenger Hunt Challenge -- Find the star and video about it on my channel
Links and Resources Mentioned in this video:
▶ Lyra Constellation: http://bit.ly/LearntheSky-LyraHarpConstellation
▶ Albireo Star: http://bit.ly/LearntheSky-AlbireoStarCygnus
▶ Download Free STARGAZING Guide: https://www.learnthesky.com/opt-in-stargazing-starter-guide
Playlists
▶ Stargazing Basics: http://bit.ly/LearntheSky-StargazingBasics
▶ Zodiacal Constellations: http://bit.ly/LearntheSky-ZodiacalConstellations
▶ Circumpolar Constellations: http://bit.ly/LearntheSky-Circumpolar
▶ Winter Constellations: http://bit.ly/LearntheSky-WinterConstellations
▶ Spring Constellations: http://bit.ly/LearntheSky-SpringConstellations
▶ Summer Constellations: http://bit.ly/LearntheSky-SummerConstellations
▶ Autumn Constellations: http://bit.ly/LearntheSky-AutumnConstellations
▶ Stars: http://bit.ly/LearntheSky-Stars
▶ Planets: http://bit.ly/LearntheSky-Planets
▶ Celestial Objects: http://bit.ly/LearntheSky-CelestialObjects
▶ Versus Videos: http://bit.ly/LearntheSky-VersusVideos
▶ Celestial Events: http://bit.ly/LearntheSky-CelestialEvents
▶ Citizen Science: http://bit.ly/LearntheSky-CitizenScience
Photo Attributions
▶ Corvus Map: By IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg) - [1], CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=15406356
▶ Sydney Hall - Urania’s Mirror: By Sidney Hall - This image is available from the United States Library of Congress’s Prints and Photographs division under the digital ID cph.3g10053.This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing for more information., Public Domain, https://commons.wikimedia.org/w/index.php?curid=31685073
▶ Antennae Galaxies - NGC 4038 and 4039: By By ESA/Hubble, CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=29570547
▶ NGC 4361: By Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of ▶ Arizona - http://www.caelumobservatory.com/gallery/n4361.shtml, CC BY-SA 3.0 us, https://commons.wikimedia.org/w/index.php?curid=20607639
▶ Constellation Photos: Akira Fujii - The Constellations http://www.davidmalin.com/fujii/general/af_const1.html
▶ Lyra Constellation Map: By IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg) - [1], CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=15407534
▶ Right Ascension and Declination Animationr: By Tfr000 (talk) 20:50, 17 April 2012 (UTC) - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=19127102
▶ Right Ascension and Declination Diagram: By Tfr000 (talk) 15:34, 15 June 2012 (UTC) - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=19907447
▶ Ursa Major Constellation Map: By IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg) - http://www.iau.org/public/themes/constellations/#uma, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=15412501
Support this Channel
▶ Patreon: https://www.patreon.com/learnthesky
▶ Online Classes: https://www.learnthesky.com/store
Never Miss a Video
▶ Subscribe to my Channel: https://www.youtube.com/c/learnthesky?sub_confirmation=1
Connect
▶ Website: https://www.learnthesky.com/
▶ Instagram: https://www.instagram.com/learnthesky/
▶ Facebook: https://www.facebook.com/learnthesky/
▶ Questions: [email protected]
▶ Business Enquiries: [email protected]
#learnthesky #stargazing #constellations #stars #keeplookingup
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
Describes the various coordinate systems used by astronomers, with a focus on the celestial coordinate system used in astronomical catalogues (also called equatorial coordinates) and how these are transformed to an azimuth and altitude (also know as an elevation).
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
-~-~~-~~~-~~-~-
This video explains the coordinate systems used in celestial navigation, with an overview of the terrestrial and celestial spheres.
This video is part of a series that teaches celestial navigation using techniques that have been used for centuries. In this course, you will learn some basics needed to find your location using a sextant and elementary math.
This course is free and available to everyone, and should take less than two hours to complete.
The course is hosted by Vanderbilt University at:
https://my.vanderbilt.edu/astronav/
Welcome to my channel! I'm Dr Maggie Lieu and I make youtube videos about space & astronomy. Have you ever wondered why there's no single definition of up? In this video, you'll find out why exactly that is and how you can calculate your own definition of up in various different coordinate systems.
Extra reading:
Media credits:
Earth: Google Earth
ISS tour: NASA
ISS flythrough: NASA
If you enjoyed the video, please help me by liking, sharing and subscribing! I'm also on:
twitter: https://twitter.com/space_mog
instagram: https://instagram.com/space_mog/
facebook: https://facebook.com/spacemog/
In this video, we break down the basics of the sky around us, and understand how to locate specific locations on the sky using the horizon coordinate or altitude azimuth (Alt-Az) coordinate system
-~-~~-~~~-~~-~-
Watch next: Solar Orbiter Discovers Surprising new Phenomenon in the Sun
https://www.youtube.com/watch?v=VOrl2QlPCMI
-~-~~-~~~-~~-~-
Learn the similarities and differences between right ascension and declination, which are both types of celestial coordinates.
Chapters:
0:00 - Introduction to Right Ascension and Declination
2:00 - Animation of Celestial Sphere
2:56 - Definition of Right Ascension
3:28 - Definition of Declination
4:07 - Venn Diagram comparison of Right Ascension and Declination
5:55 - Shadow of Mauna Kea (from my days as a volunteer in Hawaii)
6:31 - Scavenger Hunt Challenge -- Find the star and video about it on my channel
Links and Resources Mentioned in this video:
▶ Lyra Constellation: http://bit.ly/LearntheSky-LyraHarpConstellation
▶ Albireo Star: http://bit.ly/LearntheSky-AlbireoStarCygnus
▶ Download Free STARGAZING Guide: https://www.learnthesky.com/opt-in-stargazing-starter-guide
Playlists
▶ Stargazing Basics: http://bit.ly/LearntheSky-StargazingBasics
▶ Zodiacal Constellations: http://bit.ly/LearntheSky-ZodiacalConstellations
▶ Circumpolar Constellations: http://bit.ly/LearntheSky-Circumpolar
▶ Winter Constellations: http://bit.ly/LearntheSky-WinterConstellations
▶ Spring Constellations: http://bit.ly/LearntheSky-SpringConstellations
▶ Summer Constellations: http://bit.ly/LearntheSky-SummerConstellations
▶ Autumn Constellations: http://bit.ly/LearntheSky-AutumnConstellations
▶ Stars: http://bit.ly/LearntheSky-Stars
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▶ Right Ascension and Declination Animationr: By Tfr000 (talk) 20:50, 17 April 2012 (UTC) - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=19127102
▶ Right Ascension and Declination Diagram: By Tfr000 (talk) 15:34, 15 June 2012 (UTC) - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=19907447
▶ Ursa Major Constellation Map: By IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg) - http://www.iau.org/public/themes/constellations/#uma, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=15412501
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In astronomy, a celestial coordinate system is a system for specifying positions of celestial objects: satellites, planets, stars, galaxies, and so on. Coordinate systems can specify a position in 3-dimensional space, or merely the direction of the object on the celestial sphere, if its distance is not known or not important.
The coordinate systems are implemented in either spherical coordinates or rectangular coordinates. Spherical coordinates, projected on the celestial sphere, are analogous to the geographic coordinate system used on the surface of the Earth. These differ in their choice of fundamental plane, which divides the celestial sphere into two equal hemispheres along a great circle. Rectangular coordinates, in appropriate units, are simply the cartesian equivalent of the spherical coordinates, with the same fundamental (x, y) plane and primary (x-axis) direction. Each coordinate system is named for its choice of fundamental plane.
Coordinate systems
The following table lists the common coordinate systems in use by the astronomical community. The fundamental plane divides the celestial sphere into two equal hemispheres and defines the baseline for the latitudinal coordinates, similar to the equator in the geographic coordinate system. The poles are located at ±90° from the fundamental plane. The primary direction is the starting point of the longitudinal coordinates. The origin is the zero distance point, the "center of the celestial sphere", although the definition of celestial sphere is ambiguous about the definition of its center point.
For example, the GalacticCoordinateSystem sets standards for celestial locations using the plane of the Milky Way as the primary reference ... For example, a futuristic global position system (GPS) could be set up.
To understand why Brahe made this accusation, we must first understand the favored coordinate system of astronomers at the time. the ecliptic coordinate system ... In that amount of time, the coordinate system would have drifted by about 3 2/3 degrees.
Simulation of a typical black widow binary star system ...Named ZTF J1406 + 1222 for celestial coordinates, the newly discovered pair is the Black Widow binary star system with which Pulsar and its allies have the closest relationship ever.
The zodiac is also used as a celestial coordinate system, using the ecliptic as the latitudinal origin and the position of the Sun during the vernal equinox as the longitudinal origin ... systems.