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

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Watch next: Solar Orbiter Discovers Surprising new Phenomenon in the Sun
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[richardmondio]

Thank you, Jesus, for explaining Azimuth to a child's brain... I looked at other videos where you need a Ph.D. to comprehend what they say. You are a good teacher.

[Dr.Scorpio]

Amazing video. You made things so much easier to understand and visualize. Thanks a million.

[rasikadandawate]

Wonderful! Thank you for your efforts to make things clear😊

[sohamlab]

Thank you for this video. I was trying to understand it from a book and that was very complex but you made it so easy.

[IssacJacob]

I love your videos! They’re so clear and easy to understand. Thank you :))

[natemajor]

Great video helped me understand how to define the location of star very well :)

[elaztic]

Hi, I am a big fan of your work and I always use your video to help explain things to people.

Would it be possible for you to do a video on the difference between:
Astronomical horizon, Horizon, true horizon, eye level, perspective and vanishing point please.

This will help clear up some confusion for some people I know.

Thank you for your videos!

[kramchancel]

when a youtube video do more than my professor and books LMAO

[zyro]

Awesome explanation. The video at the end was so good. Can you please help me by suggesting any resource for mathematical calculations involved in the conversion of different Astronomical Coordinates?

[hoziwei]

awesome video, may i ask transit happen when stars intersect the meridian line? But at the North or South pole, the stars wheel around the zenith, why there is no transit at North and South pole? Hope can answer my questions 😬

[alisonhurtado]

Binoculars astronomy book got me started Nd you made it understand able

[kaylanilegaspi-smith]

(current astronomy student) At 1:55 in this video, did you mean "-90 at the nadir?"

[Mado]

thank you
i was confusing Altitude and Elevation till seeing your video
altitude true for everything
elevation works only inside earth

we can use altitude on earth but not vise versa, by having distance from us to the object and the angle(altitude) we figure out the height we are seeing

[adarshmishra]

from 2:50 to 3:20, how can W & E be respectively on right and left of N -S line??? should it be other way round?

[likeahayvan]

at 1:56 I think you mean -90° in the nadir

[AE-yrmo]

From 3:00 onwards how would you say the celestial dome is being projected to the 2d image here? Is that an orthographic projection?

[PassportAndPixels]

Thank you for the explanation, but it would be great if you could help me understand, how east is left to the North, I am not able to understand that. Sorry if its very basic.

[mikegordonbrasov]

¿Any idea how to locate the first aries point from any place you are on earth? Is for the purpose of practicing. Maybe some DIY clinometer gadget, that help me to locate where is the vernal point, and after that, finding a star by it´s declination and AR?
Or maybe a simpler method? By the way, i like your tutorials, they are very good!

[lacielightrainbowraeintheg]

Great example yet I’ve always seen on my compass east to the right and west to the left in eastern USA.. why does yours show east left of the north ?

[maxiaurich]

Great Video! My only question now is: How can you use this coordinate system to determine for example the coordinates of a planet?