Equatorial Coordinate System Explained: How Astronomers Navigate the Celestial Sphere

[@gabedarrett1301]

This surpasses all other KZbin videos on the subject because it's the most intuitive! Few people can teach as well as you!

[@im.saying.no.sometimes]

I teach high school astronomy and we're all in quarantine from Covid-19 and I needed to get materials onto our online system fast. While looking for celestial sphere and celestial coordinate system videos I had to dig through youtube for a while before I found yours. They are the best I've come across. Thank you.

[@atriacharya2967]

In which country do you teach, sir?

[@LaunchPadAstronomy]

Thanks Ammon, I’m so glad they can help. Good luck!

[@im.saying.no.sometimes]

@@atriacharya2967 the US

[@Rajeshgodsown]

Please check the KZbin channel of 'MICHEL VAN BIEZEN'. Go to play list of ASTRONOMY, then CHAPTER 2. 8th video of that chapter will explain it in such a way that you will get addicted to that channel like me. As you said you are a teacher, you will definitely get benefitted from his way and simplicity of teaching.

[@satvikvarun6386]

@@Rajeshgodsown yes, i m completing watching his playlist

[@harithaelangovan1865]

Way better than my books. Thanks a lot, bro❤️❤️ Helped me a lot in my exams.. Fan of ur channel

[@LaunchPadAstronomy]

Thank you, I'm glad you found it helpful and hope you crushed your exams!

[@LaunchPadAstronomy]

Haritha Elbeya fantastic!

[@tagiasm4148]

If you recorded something using the equatorial coordinate system, how would you find it again if you went away from Earth and into space?

[@abrar.shahriar]

I can't thank you enough with words

[@cakluwoiwoi622]

I have watched thousands videos about equatorial coordinate, but this is the only video that I understand.. Thankyou so much :D

[@LaunchPadAstronomy]

Thank you, I'm glad you found it helpful!

[@maximp.7724]

Thanks from Belgium! Finally understood it!

[@LaunchPadAstronomy]

I’m delighted to hear that. Thanks!

[@sparrow848]

Your videos are amazing and they have saved me from creating my own while trying to teach online astronomy during COVID-19 lockdown. Thanks again!

[@manognadk7917]

I have a question since we revolve around the sun our celestial sphere changes so will the RA and DEC how do we compensate for that?

[@TheCrossroads533]

It's a challenge to briefly explain the celestial coordinate system without wandering off into other discussions. You succeeded! Hurrah!

[@lauchuchi]

I am a second year physics student, but I could never understand celestial coordinates. Finally I get it, thanks a bunch.

[@LaunchPadAstronomy]

I'm happy it helped!

[@SpntaneuCmbustins]

These videos help in school so much these are great I just want to hug you soooo bad I am not failing classes anymore!

[@LaunchPadAstronomy]

I'm so glad it helped! Now go make me proud.

[@mirrormimi]

This video is a thing of beauty ;-; Clearest explanation of the system out there

[@LaunchPadAstronomy]

Thanks!

[@gordonfreeman5958]

The globe graphic in this video really helped my understanding, thanks!

[@theuniqque]

Finally I got the video that perfectly explained the equatorial coordinate system... This helped me a lot.. Thank you so much ✨

[@chachachalga]

This video is going to save my grade on the test I have in an hour, thank you so much!

[@prasannarenapurkar5420]

Thank You so much. Helped me imagine it in much better way .I hope your channel grows much more and you keep making useful content.

[@LaunchPadAstronomy]

So glad it helped!

[@GalaxyArtMedia]

Very nice, will check more of your videos!

[@LaunchPadAstronomy]

Awesome, thank you!

[@sohamlab2789]

this channels videos are the best for coordinate astronomy.

[@sm6756]

Excellent video series !

[@LaunchPadAstronomy]

Thanks!

[@SAPNurMasyita]

Thank you so much for your videos! I'm currently studying for my final exams and your videos help a lot!

[@LaunchPadAstronomy]

It's my pleasure, and good luck!

[@josephlai9759]

So very well explained. Thank you.

[@philipphuber1760]

Great video! Very nicely explained, thanks!

[@LaunchPadAstronomy]

Thanks, much appreciated!

[@LaunchPadAstronomy]

Philipp Huber thanks!

[@AhmedFaragAli]

You simple explanation is really amazing, thank you!

[@LaunchPadAstronomy]

Thanks!

[@suvashshrestha1731]

Sir would you suggest me the software to find for a given RA and DEC coordinate value in the laptop that whether it is associated with any astrophysical source or not? I am doing my thesis sir but I couldn't it.

[@nosir1479]

I'm not even studying for school. Just popping in for my own amusement. Nice video.

[@LaunchPadAstronomy]

Best reason!

[@diegopescia9602]

Very useful and clear. Thanks

[@LaunchPadAstronomy]

You're welcome, and thanks for the comment!

[@ResistDemise]

Very effective explanation thanks. You could do galactic coordinates too .

[@Christopher_Cole]

Really helped me. Thank you!

[@LaunchPadAstronomy]

Awesome, I'm glad you found it useful.

[@RightRudder]

I absolutely LOVE this video, it's the first one that really got me to understand this. But as a follow-on, how does "Hour Angle" relate to the Equatorial Coordinate System?

[@LaunchPadAstronomy]

I'm really glad you enjoyed the video. The Hour Angle can be used to describe the east-west or "RA" distance between two points in the sky. Usually it's measured off the meridian as positive if it's westward and negative if it's eastward. Cheers!

[@ShaswataChowdhury]

I have a question -- the earth is rotating and also revolving around sun; so isn't the coordinates of any celestial object on the celestial sphere (RA,DEC) going to change?

[@hasithaanuradhini4857]

Very easy to understand. Very simple. Thanks.

[@LaunchPadAstronomy]

My pleasure and thank you!

[@superwelshgandalf]

Firstly thanks for these videos! Regarding right ascension - Does this look correct: Say I want to find Sirius around April 21st, rounding its RA to 6 hours and accounting for a month of earth motion 30deg / 2 hours = RA 4. Do I need to look where the sun sets then go east along the horizon around 60 degrees then from my zenith (I'm at 53 deg north) look south approximately 65 - 70deg (-53 - 16 declination)?

[@ProGamer2017]

Thank you so much

[@Jay-dm3un]

So if the prime meridian for geographic co-ordinates is in Greenwich, what position on the Earth/in the sky does RA = 0h0m correspond to?

[@LaunchPadAstronomy]

The vernal equinox.

[@rupamkundu5838]

Love it, love the way you described it...

[@arnabsahaiitmandi1363]

Thank you sir. Love from India❤️🇮🇳

[@mariusfrost640]

Could you elaborate on "The annual path of the sun."? It seems to me you're saying the ecliptic would be a line created by connecting the dots if we plotted the position the sun appears to be at the same time each day (say high noon) to an observer on Earth, relative to the background stars. Meaning the sun would appear to be directly overhead to an observer on Earths equator at noon on the vernal equinox, but in midsummer, it would appear directly overhead to someone at 23 degrees north latitude?

[@LaunchPadAstronomy]

Yes, that's what I'm getting at. Of course, by "path" I mean the apparent path of the Sun around the sky, which is ultimately a manifestation of our annual path around the Sun. And you're correct that the Sun will be at the zenith as viewed from the equator at local noon when the Sun is on both equinoxes. I have a video on that where I discuss the seasons: kzbin.info/www/bejne/pnurd2xppKuFp5o

[@aseempoudyal4658]

can you let us know the software you are using to explain

[@أحمدآزادعلاءالدين]

Thanks to you you help me alot ( from Iraq )

[@islam13ish]

Thank you sir , you're the best so far , can you give any resource where i could understand how to move from one system coordinate to another.

[@duncanmckenzie2815]

Nice and clear explanation. Thank you.

[@LaunchPadAstronomy]

Glad it was helpful!

[@zyro9922]

Can somebody please recommend a good astronomy calculations book or a resource for conversion between different Astronomical Coordinate System? @Launch Pad Astronomy

[@LaunchPadAstronomy]

Not off the top of my head. Converting between RA/Dec to Alt/Az involves knowing your position on Earth and time. I’m sure there are resources out there you can google. Cheers!

[@elaztic]

This is the best celestial sphere explaination on youtube. Please change the title so more people can see it please! Thank you!

[@LaunchPadAstronomy]

Thanks, and that's a really good idea. Hope the new title works a little better :)

[@UpcomingJedi]

Useless. If i look at the sky right now it is night so i cant see the sun at the equinoxso how do i find a star in winter? Where is 0 ra and declination now to understand this?

[@jayantkumbhar8049]

Very much useful

[@Rob-ys6ot]

thank you so much!

[@thomaschipgood7813]

Clarifying the confusing "hours of Right Ascension" longitudinal coordinate system of the celestial sphere: Celestial "prime MERIDIAN" (or "zero HOUR") was chosen by choosing the meridian ("hour") which CROSSES the POINT on the sphere where the sun seems to cross the celestial equator in spring (March 21). (That POINT on the celestial sphere is called "the spring [vernal] equinox".) --------- Other meridians ("hours") are labeled by the following process: Outside the celestial sphere, (with the north celestial pole at the top), move ("ASCEND") to the RIGHT while drawing a meridian ("hour") every 1/24 around the sphere. Thus, there are 24 meridians (24 "hours" of R.A. "RIGHT ASCENSION"). Each hour is divided into 60 "minutes". Each "minute" is divided into 60 "seconds". I wrote the above, after learning from this video. Thank you for your video.

[@정준우-r6h]

nice video

[@abdullaalmosalami]

But the Earth is moving beyond just its rotation - it is orbiting the sun, and the solar system is also moving. How does that _not_ change the coordinates of stars in this celestial sphere if Earth must be at the center of it? Or is the diameter of this sphere far more order of magnitudes larger than any of the quantities that describe the motion of our Earth and solar system?

[@betaorionis2164]

The coordinate of the stars (RA/dec) change, only that very slowly... for our perception. You are thinking in terms of a Human scale of time and distances. But if you think in terms of astronomical distances, they are so colossally huge that thousands, even millions of years are needed for a visible change. Also, think that the stars we see are all relatively close to us and move around the center of the galaxy in a similar pattern than our Solar System.

[@Basilisk4119]

Boss vid 😎

[@reginajohnson188]

But what if our compass 🧭 is wrong because 360° is not 🚫 north ⬆️ that sit at the equator I can I actually prove that our compass 🧭 is wrong 😭

[@arcaderex3872]

THANK YOUU

[@hermieemmanuelrodriguez2110]

hi gayazzz goodlck sa mag report nitoo

[@zack_120]

By celestial, I was expecting the Universal coordinate system, not the galactical system as presented here 😅

[@elishagunasekara4038]

Lets go to 100k!

[@LaunchPadAstronomy]

Thanks!

[@ashzole]

how do i use the bible to decipher the astromy thingy. ezelkill described the celestial sphere not aliens. when it says on the 10th month on the 10th day blah blah. is it read declination no of 10 degrees 10 hours 0 seconds 0 minutes???? also where on earth do i apply the coordinates in the bible. where should i be standing when i look up

[@eMBO_Gaming]

Wtf?

[@zack_120]

Its👎Ecliptic or elliptic??

[@Pie314159265358]

Get Your Longitudes in there! Your very 1st statement has too many 'latitudes's i/incorrect.

[@Animestudioi]

🙌

[@Landoparada360]

Earth NOT a spinning ball lost in a vacuum, Earth is seriously flat and non rotating in the center of the whole universe ♥️

[@jitenanand4899]

the over layering of lines brought confusion.

[@MrAdidas4u]

i love u

[@sailakshmicholanilath9794]

Tbh still a little confused ...

[@pheelickscanari904]

who else here for clas sz

[@JimmieLamping]

Clarifying the confusing "hours of Right Ascension" longitudinal coordinate system of the celestial sphere: Celestial "prime MERIDIAN" (or "zero HOUR") was chosen by choosing the meridian ("hour") which CROSSES the POINT on the sphere where the sun seems to cross the celestial equator in spring (March 21). (That POINT on the celestial sphere is called "the spring [vernal] equinox".) --------- Other meridians ("hours") are labeled by the following process: Outside the celestial sphere, (with the north celestial pole at the top), move ("ASCEND") to the RIGHT while drawing a meridian ("hour") every 1/24 around the sphere. Thus, there are 24 meridians (24 "hours" of R.A. "RIGHT ASCENSION"). Each hour is divided into 60 "minutes". Each "minute" is divided into 60 "seconds". I wrote the above, after learning from this video. Thank you for your video.