This video answers many questions that came from watching other navigation videos. Having an expert state at the beginning of a video that navigation is "easy", then throwing out navigational buzz words, and finally quickly solving navigational calculations, left me scratching my head. This video actually explains how the system works. That has made all the difference. david
Outstanding - well done - thanks! Even the video clips of the navigator added value to the presentation! I'm taking Celestial ASA 107 right now and your video has helped to clarify the use of the Star Finder.
Amazing UA-cam! I can almost understand this. It will take several more sessions watching the UA-cam but it's all there. Lucky thing, I have the 2102-D.
Well explained. Having said that it seems like a complex way to find stars. The night sky barely changes from night to night (a measly 1 degree per day). So why not just learn a handful of stars one night and refamiliarize yourself each night. You can predict exactly where they will pop up as it’s almost the same place as the night before. I realize Vega was only an example, but gosh, that’s one easiest stars to identify in the night’s sky. The planets are nice and bright and easy to identify as well.
Very good video, just remember that in some areas of the world you will have to convert the magnetic readings of your handheld compass to true bearings to identify the right star on the stattfinder and the other way around when precmputing. Apart from that detail this is a very good explanation!
Good day Sir, Before anything, I would like to thank you for uploading on the Internet all the videos about navigation. I have learned from them, they are very good. There's a question I would like to ask if possible...I read a lot of materials about Celestial Navigation and there's one thing that I could not understand. They're saying like this: "We're taking bearings to the Star","We're taking bearings to the Pole Star" or whatever the celestial body is. My question is how we could take bearings to one star using the alidade upon the Gyro repeater?? That star is supposed to be on the sky. Its not the same thing like taking bearing to a buoy or a beacon lying down on the horizon. Please explain this to me. Its very very important to me. Unfortunately, nobody have shown that to us. Just by the books but not practically which is way much important than reading. Thank you very much for your kind support. You are the best.
I'm trying to study it as well, what I understood that you take bearing to the ** GP ** (the Geographical point) of the star, that mean the place **on earth** whare the star is directlly over head.
The accuracy of that bearing been taken in that way would be very low. You are in the middle of the ocean, therefore you got no beacon or any sign around you in order to be assimilated to that particular star. You could be right but I doubt it. Thank you anyway for your answer.
Point your compass and take a bearing just below the the sighting object were it would touch the horizon. So when go out to shot it you were to turn to. The sextant will give you the altitude, or I believe also called declination by astronomers. I hope this helps
It is a good device. Some users marked the months around the base plate. On the red transparency they marked the hours of the day and a map of the world. With the time and date brought together, the stars are mapped onto the Earth. Then the azimuth grid can be set where it belongs.
Pros: usually brighter than stars and since they don't tilt, easier to capture with the sextant. Cons: moving significantly faster than stars since they are closer to the Earth.
Lol i like how he smoothly side stepped precessional slippage, "thats not important for our use" (unless your gonna be navigating for 1000 years like the freaking Flying Dutchman)
That's why you use a current almanac, the calculations are updated regularly. I compared my 2020 almanac with examples from a book published in 1986 and you can see these various long-term variations in the figures.
Thank you kindly. I've been running into issues setting planets for ID. I was using SHA without conversion to Right Ascension. Thank you for the clarification.
The first calculation at 24:25 to find the star Vega started with knowing the latitude and longitude. If you already knew that, why do you need to calculate further? How did you know it to begin with?
I believe you can get the latitude and longitude of your position using just the noon sun. the noon local time will show you your difference from GMT multiply that difference in hours by 15 degrees and that will give you your longitude remember to take the 'equation of time" chart into consideration for better acuracy and have a clock displaying GMT time. The angle of the sun plus or minus the suns declination depending on if it's around the summer solstice or the winter solstice then minus 90 degrees will give you your lat. or you can just wait till night to use the angle of Polaris above the horizon for your latitude which is way easier. you can use a compass and a sundial to estimate when it's about to be local noon then you could start taking the measurements. this works best for navigating on the ground and using measurements of observed shadows around local noon but same should work on a sailboat.
Could you please develop a video explaining steps if our latitude is in the middle in between "Blue Disks. Let us say 40 Degrees N in between 35N and 45N degrees template. Thanks.
This star finder is in reality old "astrolabe" -use same projection of stars, same way of use, just astrolabe have also scale for Aries LHA at edge of base plate .
This is a great video! Thank you! I do have a question. What about using the moon? Could we just use the blue latitude disc along with the moon's LHA? The only problem is how to plot it using its declination since there's no slot on the blue template. Thanks!
This is very very excellent tutorial I learn very good things but my confusion is which one will be the actual Star my horizon ?? Should I take the sextant altitude of the brightest star first ?? Then using star altitude find the bearing and the actual star ??
Damn!!! You are very good:) I will go ahead by a hand-held GPS, Instead:) If I can find the local electronic store by using your celestial navigation!!!!
In the word "Greenwich" you pronounce one of the e's and you do NOT pronounce the w. Therefore, the word is pronounced "Grenich".....with a short "e" and a short "I". Thank you for your time.
This video answers many questions that came from watching other navigation videos. Having an expert state at the beginning of a video that navigation is "easy", then throwing out navigational buzz words, and finally quickly solving navigational calculations, left me scratching my head. This video actually explains how the system works. That has made all the difference.
david
Just beautifully done! Thank you!!
Outstanding - well done - thanks! Even the video clips of the navigator added value to the presentation! I'm taking Celestial ASA 107 right now and your video has helped to clarify the use of the Star Finder.
The use of a star finder is well presented. Nice work
Amazing UA-cam! I can almost understand this. It will take several more sessions watching the UA-cam but it's all there. Lucky thing, I have the 2102-D.
Everything clicked now. Many thanks!
Well explained. Having said that it seems like a complex way to find stars. The night sky barely changes from night to night (a measly 1 degree per day). So why not just learn a handful of stars one night and refamiliarize yourself each night. You can predict exactly where they will pop up as it’s almost the same place as the night before. I realize Vega was only an example, but gosh, that’s one easiest stars to identify in the night’s sky. The planets are nice and bright and easy to identify as well.
Agree but bear in mind that at sea you will often have heavy cloud cover at night so may have limited (or no) stars or planets to shoot. Cheers
Excellent tutorial. I inherited a Weems and Plath 2102-D starfinder and found your video an excellent aid.
Excellent. Best video on the star finder.
Great video. This is the first clear explanation I've seen. Thanks.
Thank you
Simple and Perfect. It is the Best Video which Explains the Basics
Very good video, just remember that in some areas of the world you will have to convert the magnetic readings of your handheld compass to true bearings to identify the right star on the stattfinder and the other way around when precmputing. Apart from that detail this is a very good explanation!
WHAT!!? Wow.
A superb, no nonsense, no frills explanation of the Star Finder. Thanks! Oh, and Merry Christmas or Happy Holidays or Happy Hanuka.... whatever!
Excellent instructional video. Very clear and concise. Thank you very much.
This is an outstanding, well done video. Thank you very much.
Really useful. Helped me a lot. Thanks for sharing.
Thank you very much!
Very nice good job. Thanks for the knowledge share. Good job.
No idea how the hell I found this, seems very educational
Excellent video. My understanding is much better now!
Really awesome tutorial
this was very helpful
well done. thank you for making this.
Excellent presentation ...I get it!
Good day Sir,
Before anything, I would like to thank you for uploading on the Internet all the videos about navigation. I have learned from them, they are very good.
There's a question I would like to ask if possible...I read a lot of materials about Celestial Navigation and there's one thing that I could not understand. They're saying like this: "We're taking bearings to the Star","We're taking bearings to the Pole Star" or whatever the celestial body is.
My question is how we could take bearings to one star using the alidade upon the Gyro repeater?? That star is supposed to be on the sky. Its not the same thing like taking bearing to a buoy or a beacon lying down on the horizon.
Please explain this to me. Its very very important to me.
Unfortunately, nobody have shown that to us. Just by the books but not practically which is way much important than reading.
Thank you very much for your kind support. You are the best.
I'm trying to study it as well, what I understood that you take bearing to the ** GP ** (the Geographical point) of the star, that mean the place **on earth** whare the star is directlly over head.
The accuracy of that bearing been taken in that way would be very low. You are in the middle of the ocean, therefore you got no beacon or any sign around you in order to be assimilated to that particular star. You could be right but I doubt it. Thank you anyway for your answer.
Point your compass and take a bearing just below the the sighting object were it would touch the horizon. So when go out to shot it you were to turn to. The sextant will give you the altitude, or I believe also called declination by astronomers. I hope this helps
OMG!! is this a troll? i think i peed myself.
@@easygreasy3989 OMG!!! Guess what? You're lucky! I also pee on you. GTFO!!!
It is a good device. Some users marked the months around the base plate. On the red transparency they marked the hours of the day and a map of the world. With the time and date brought together, the stars are mapped onto the Earth. Then the azimuth grid can be set where it belongs.
Excellent video. Thank you.
Guys what are the pros and cons of shooting the planets compared to stars? Awesome video by the way. Thank you 🙏
Pros: usually brighter than stars and since they don't tilt, easier to capture with the sextant. Cons: moving significantly faster than stars since they are closer to the Earth.
Lol
i like how he smoothly side stepped precessional slippage, "thats not important for our use" (unless your gonna be navigating for 1000 years like the freaking Flying Dutchman)
That's why you use a current almanac, the calculations are updated regularly. I compared my 2020 almanac with examples from a book published in 1986 and you can see these various long-term variations in the figures.
Thank you. Very helpful to a beginner
so complicated to navigate by sight in this spinning an moving universe.
The Universe isnt what we're seeing move, we're seeing ourself move, the stars are always in the same place.
Thank you kindly. I've been running into issues setting planets for ID. I was using SHA without conversion to Right Ascension. Thank you for the clarification.
The first calculation at 24:25 to find the star Vega started with knowing the latitude and longitude. If you already knew that, why do you need to calculate further? How did you know it to begin with?
These are dead reckoning or estimations only, hence they are a base for finding your exact lat and long. Cheers
Perfect explanation... congratulations...
This video is good. Thank you!!
I believe you can get the latitude and longitude of your position using just the noon sun. the noon local time will show you your difference from GMT multiply that difference in hours by 15 degrees and that will give you your longitude remember to take the 'equation of time" chart into consideration for better acuracy and have a clock displaying GMT time. The angle of the sun plus or minus the suns declination depending on if it's around the summer solstice or the winter solstice then minus 90 degrees will give you your lat. or you can just wait till night to use the angle of Polaris above the horizon for your latitude which is way easier. you can use a compass and a sundial to estimate when it's about to be local noon then you could start taking the measurements. this works best for navigating on the ground and using measurements of observed shadows around local noon but same should work on a sailboat.
Great explanations. Thank you
We well explained: Subject matter and use of star finder templates.
Could you please develop a video explaining steps if our latitude is in the middle in between "Blue Disks. Let us say 40 Degrees N in between 35N and 45N degrees template. Thanks.
such a handful knowledge .. thnx a lot
agree with anghel thanks for sharing
Damn good thing I was in the air wing when I went into the Navy, I would still be lost.
This star finder is in reality old "astrolabe" -use same projection of stars, same way of use, just astrolabe have also scale for Aries LHA at edge of base plate .
This is a great video! Thank you! I do have a question. What about using the moon? Could we just use the blue latitude disc along with the moon's LHA? The only problem is how to plot it using its declination since there's no slot on the blue template. Thanks!
The moon is too close hence moves too quickly. Planets and stars are the way to go 👍
This is very very excellent tutorial I learn very good things but my confusion is which one will be the actual Star my horizon ?? Should I take the sextant altitude of the brightest star first ?? Then using star altitude find the bearing and the actual star ??
superb.
Excellent explanations....may I ask if you know any place they do practical celestial sailing at sea please?
sorry, no idea, where're u from? u can try asking here: facebook.com/groups/CelestialNavigation/
Well Done, thanks
Where does he get the items from that he uses?
eBay has Star Finders, marine sextants, aircraft sextants, and height tables.
Why am I seeing a flat earth warning from UA-cam?
Because the flat earth seagulls can’t resist flying over and shitting nonsense in the comment section 🙄
what delays the sun 50s each year?
Nothing. We just round up the numbers, but these numbers don’t disappear. This is why we have a leap day every 4 years
I can identify the Earth, Sun and the Moon. I am a budding astronomer.
Gren-itch, not Gren-witch
thanks..
Thanks a lot sir.
Damn!!! You are very good:) I will go ahead by a hand-held GPS, Instead:) If I can find the local electronic store by using your celestial navigation!!!!
Celllestial Navvviggation😂😂
In the word "Greenwich" you pronounce one of the e's and you do NOT pronounce the w. Therefore, the word is pronounced "Grenich".....with a short "e" and a short "I". Thank you for your time.
[13:33] Flat Earth theory confirmed!
Just beautifully done! Thank you!!
Just beautifully done! Thank you!!