I was struggling for near a week to understand some concepts regarding the trajectory of the sun as viewed from different latitudes on Earth. Thanks to you, now everything is crystal clear!!

Your Lectures have made me interested in Astronomy. Thank you so much!

totally new to astronomy, but your videos have given me a greater insight than any other that I have browsed. thank you

the best explanation i have ever encountered. excellent animations. thank you so much!

This was really good. I'm in Sydney, so I was really glad you did some Southern Hemisphere examples too. An excellent, well-paced, very clear intro to the Celestial Sphere. Thank you!

THANK YOU SOOO MUCH!! I have been struggling so badly with perception and the appearance of movement of the stars. This was the best lesson I have seen thus far.

I was so confused on my homework about this, I thought I was going to fail. You explain this very well. Thank you.

Thanks for posting this lesson. My understanding is much clearer now. Ur a great teacher!

Kudos to the effort that put on to make this video. It was helpful.

Thanks for the playlist!! It's great!

It really helped me... I love this video Thx a lot ... U are 1 in a million who makes such informative videos Based on astronomy

Hi, I'm a software developer who is currently dealing with calculation of sunrise/sunset. I wanted to learn more about the subject but didn't find much quality materials Yours is just great! I'm now more interested in Astronomy than ever.

EXTRAORDINARY!!!!!!!!!!!!!!!! Liked, subbed, and will be devouring your tutorials. Many thanks for a superb presentation.

Fantastic explanation. Though i had work similar dynamics still had lot to learn. Also the associated animation link is fascinating to play with. Thanks for sharing.

Ahh hello sir, I really want to thank you for your videos, they are very informative and I learned more than what my professors taught. I am very happy I found your channel. Keep up the good work sir

thank you very much you explain to me a big question that i was trying to answer for a long period of time as beginner in astronomy

Great explanation and animations!!

Thank you so much for this video! It is a little confusing but I appreciate the good information you give.

Very easy to understand such presentation even if english is not your mother tongue. Thank for this useful and basic information

Fantastic session...learning made very easy for beginners and enthusiasts

Thank you so much for explaining this so I can comprehend all the information.

@perobinson

4 жыл бұрын

You're welcome.

very good...Now i actually understand what actually all this is... Thank you

Thank you very much for your videos!!

Fantastic video. Thanks.

Very well explained; though it's probably not my level yet and I don't need to go into that much detail, I could still understand the length of the lecture that I watched fairly well. Thank you

Thank you for this video!

Your videos are great.

@perobinson

9 жыл бұрын

***** Thanks for watching!

Very helpful!!!! Thanks a ton for the video.

Thank you.

Watching this raised some questions in my mind. First, Polaris is what we call the star closest to the north pole of Earth's rotation, but what do we call whatever star is closest to the north pole of the ecliptic. I can probably look that up... Secondly, is Polaris visible from the equator? My first inclination is to doubt it, since Polaris seems to be a point object, and the curvature of the Earth should block any cone of visibility at the Equator. Following that assumption, I wonder 1) at what latitude closest to the equator should Polaris be visible? and 2) at what lowest altitude above the Equator should Polaris be visible. But, I remember that Polaris is a star, and, like our Sun, should be many times larger than the Earth, so actually the Equator should be the "top" of a frustum of a cone, with an orthogonal great circle around Polaris forming the base, so that Polaris should be visible at the Equator. I realize that the distance involved is so great that we can treat light coming from Polaris as being parallel, and so Polaris ought to be visible on the horizon at the Equator. Thanks for the video.

Thanks for the video. I would like to have a better understanding of the the precession of the equinox. Would you happen to have a video that show this concept.

Can you do a video on Equitorial system

Great video. Can you please point to the next video in the series?

you are great ,sir

very useful as well as interesting

Thank you so much!

What software are you using for the demos?

AMAZING

I like all your video

hey help me on ways to find the position of a star using horizon system

thank youuuu

great.

so does the celestial sphere rotate opposite the earth?

@perobinson

4 жыл бұрын

Yes, it appears to rotate in the opposite direction.

and further beyond in my Cobra MKiii spacecraft

I travelled to Tau Ceti in Elite Dangerous😊

15:59

We want to use this video for a college course in Astronomy at Santa Rosa Junior College. Would you please grant us permission to caption the video so it has punctuation and clear sentences? If you turn on Community Contributions in KZread, we could add the better captions to these videos. Alternatively, we can send you a corrected caption file that you can upload in KZread. One more option is to use a site such as Amara.org that will embed the video and give us an interface to overlay the video with the better caption file. All of these options leave the control in your hands. If you take down the video, it will no longer appear in the course, we will just be embedding from KZread, not downloading the video.

actually I don't live in the northern hemisphere..specifically not Westchester ny.. Im one of those strange people that like to live upside down in Australia