Celestial Navigation DEMYSTIFIED: Time Diagram

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PEARSmar Interactive Maritime Training

Күн бұрын

I created this video to simplify the Time Diagram. It is a comprehensive illustration of the relationship between hour angles and meridian angles on the celestial sphere. This information forms the foundation of celestial navigation. If you have questions about this topic, leave them below. I'll address them as soon as possible. Stay SAFE.

Пікірлер: 24

@denamloc5178 2 жыл бұрын

Mr. Pearson, you're finished depiction of the diagram of time, along with the definitions and notes, is nothing short of fantastic. You have condensed all the time and angle terms into one easily understandably form. It would be truly helpful if the finished product was available as a pdf document that could be downloaded or printed so it could be added to my almanac as reference insert. Thank you for your video!

@pearsmarinteractivemaritim4849 Жыл бұрын

Thank you very much for taking the time to leave a feedback. Much appreciated. I'll add a pdf version to my To-Do list. I expect to have it done within the next couple of weeks.

@billklein2415 3 жыл бұрын

Great lesson with easy to follow explanation of the Time Diagram.

@pearsmarinteractivemaritim4849 3 жыл бұрын

Thank you for the positive feedback. This relatively short video took over two weeks to produce. My goal was to ensure the Time Diagram concept was simplified as much as possible.

@sagaranand8847 3 жыл бұрын

Respected Sir Kindly upload more videos of celestial navigation 🙏🏽

@pearsmarinteractivemaritim4849 3 жыл бұрын

What celestial navigation topic(s) would you like to see?

@discountcuppon 3 жыл бұрын

Jai hind For preparation of second mate / DNS/ BSC nautical science/NCV come in #kundanpatna

@pearsmarinteractivemaritim4849 3 жыл бұрын

@@discountcuppon Great job! All the best. Do you have a specific topic(s) you would like me to create videos for?

@discountcuppon 3 жыл бұрын

@@pearsmarinteractivemaritim4849 thanks for your west regards

@ivanmarabulas9052 Жыл бұрын

Hello Mr. Pearson, I have a question. What if LONG. is West, should I still add the angles?

@pearsmarinteractivemaritim4849 Жыл бұрын

If LONG is West, substract LONG from GHA to get LHA. Let me know if you have other questions.

@zolon4941 Ай бұрын

great! why Aries?

@iangervacio27 5 ай бұрын

Can you find these answer if the given are Meridian angle(t)⭐ 20° West RA ⭐ 230° GHA ♈ 180° Find Longitude GHA⭐ SHA⭐ LHA⭐ T ♈

@pearsmarinteractivemaritim4849 4 ай бұрын

Greetings. The problem should be workable. A "west" meridian angle (t) of a star means LHA of the star is the same value as t. Right Ascension (RA) is measured east from Aries to the star. Hence, Aries is located 230 west of the star. Since GHA is measured westward from G, you can work backward from Aries to get a GHA of 180°. This setup should allow you to solve your questuion.

@TheCaeleus 11 ай бұрын

Hello sir. How about if there is no given measurement of aries. No GHA, LHA, RA or even t of Aries. How do we get aries

@pearsmarinteractivemaritim4849 9 ай бұрын

Accurate time is needed to get GHA of Aries.

@karhukivi 2 ай бұрын

The almanac gives the position of Aries as well as listing the SHA values for the brightest stars.

@BlondeQtie Жыл бұрын

i have watched several videos on celestial navigation already and this one is way too fast, you don’t write down or explain the terms enough to follow easily. i understood nothing. why aries. what’s the small m and g. where tf is the observer. the last part with the earth model was a bit better to understand.

@pearsmarinteractivemaritim4849 Жыл бұрын

JuliaMastouri, I'm so sorry about your experience with the video. I accept full responsibility for not disclosing the level of difficulty of these topics. I'll be sure to do so in the future. My celestial videos are intermediate to advanced levels. A video on basic celestial theory would help explain some of your questions. Here is my recommendation: kzfaq.info/get/bejne/pcBkraelnbupcmw.html The video is old and image quality is not the best, but the information is timeless. After watching the video and subsequent parts, please let me know if you have questions. I just returned home from shipping so my response will be prompt. Best regards, SBP.

@BlondeQtie Жыл бұрын

@@pearsmarinteractivemaritim4849 thank you!

@lyingcat9022 6 ай бұрын

@@BlondeQtiedid you find some prerequisite knowledge? And try watching again? :) Did you figure out why Aries? And why the “first point of Aries” isn’t actually in the constellation Aries?

@trace6719 Ай бұрын

You see. I have finished watching the video but still learned nothing 😂

@user-gn7zu2kw2t 5 ай бұрын

Hello sir. How about if there is no given measurement of aries. No GHA, LHA, RA or even t of Aries. How do we get aries

@pearsmarinteractivemaritim4849 4 ай бұрын

Hello. You would need to start with the time (UT) in the Nautical Almanac to extract the GHA of Aries. SHA of the stars and planets are also given. Your DR longitude is needed. You can then compute the other required information. Hope this helps.