What is the difference between SHA (Sidereal Hour Angle) and RA? And their relationship with GHA?

Описание: If you liked this video, you can become an exclusive member of "Steering Mariners". Benefits of this membership are long-term. As a exclusive member, you will enjoy:
1) Access to hundreds of previously loaded videos (through the community post) which are not accessible to the public.
2) 3-4 new videos every week not only to help with your studies but to plan your career.
3) early access to videos due for public viewing by at least 2-4 weeks.
4) Posting questions and getting answers to your query early and personally from me to help you with orals and exam preparation.
5) opportunity to network with other members and request for resources and/or guidance (and from me of course).
Link to membership:
   / @steeringmariners  

In this video, I explain the difference between sidereal hour angle (SHA) and right ascension (RA), their relationship with each other and Greenwich hour angle (GHA). The use of examples helps in understanding of concepts.

Contents of this video will benefit mariners preparing for exams (written and oral examinations).
Mariners will also benefit by watching the following videos:
Celestial Navigation
Meridian Passage (Theory):    • Meridian Passage of a celestial body - The...  
Meridian passage (Sun – example 1):    • How to calculate the ship's latitude using...  
Finding the reading to set on a sextant:    • Finding the reading to set on a sextant - ...  
Compass error Amplitude (Sun):    • How to calculate compass error using the a...  
Amplitude (Sun):    • Calculate the compass error using the Ampl...  
Compass error Azimuth (Sun – example 1):    • Compass error calculation using the azimut...  
Longitude and time:    • Longitude and time - Relationship between ...  
Correcting sextant altitudes:    • Correcting sextant altitudes - Sun, Star, ...  
Finding LHA and declination:    • Calculating a celestial body's LHA and dec...  
Intercept (Sun):    • Calculating the intercept and position lin...  
Staggered observations (Example 1):    • Staggered Observations - Plotting ship's p...  
Variation, deviation, and compass error:    • What is the Variation, Deviation, and Comp...  
Longitude, GHA and LHA:    • Relationship between longitude, GHA, and LHA  
Ambiguity of chronometer time:    • The ambiguity of chronometer time_obtainin...  
Twilight:    • Twilight: Nautical navigation and astronomy  
Calculating sunset time:    • Calculating sunset time using tables of in...  
Back angle of sextant:    • Back Angles of a Sextant - what is it and ...  
Long by chron (Sun):    • Longitude by chronometer (Long by chron) m...  
Ex-meridian (Sun):    • How to use the Ex-meridian method for calc...  
Polaris:    • Polaris (Pole Star) - Latitude, PL and Dev...  
PZX triangle:    • PZX triangle Rational Horizon diagram - Ce...  
Venus as morning or evening star:    • Why Venus is known as the morning and even...  
Circumpolar bodies (Theory):    • Circumpolar Bodies Celestial Navigation - ...  
Circumpolar bodies (worked example):    • Circumpolar Bodies - Worked Example 1  
How to use proforma in Meridian Passage calculations:    • How to use Proforma for Meridian Passage c...  
Coastal Navigation
Difference between true, magnetic, and compass bearing:    • What is the difference between true, magne...  
Great circle sailing:    • Great Circle Sailing Calculation - with in...  
Determining the final (and Initial) course angle:    • How to determine the Final (and Initial) c...  
Composite great circle sailing:    • Composite Great Circle Sailing - Ocean Nav...  
Calculate departure along a parallel of latitude:    • How to calculate departure (along a parall...  
Calculate d’lat and d’long (Plane sailing):    • How to Calculate D'lat and D'long - Part 1...  
Mercator sailing (Example 1):    • How to solve Mercator sailing calculations...  
Calculate mean latitude:    • How to calculate mean latitude or m'lat  
A trick to remembering formulas in sailings:    • A simple trick to remember the formulas in...