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News

GPS jamming by Lightsquared - Wednesday, February 02, 2011

Lightsquared, who are developing a wireless data network, have been granted permission to use frequencies that are used by GPS, even though t is proven that thios will stop GPS receivers from operating near their transmitters. Luckily, sextants are not affected!

 read more ...
WinAstro reviewed by PBO - Tuesday, January 25, 2011

Practical Boat Owner has reviewed WinAstro and given it a very good *** rating. You can read the review here on the ybw.com web site.

 
Mike Richey passed away - Tuesday, January 25, 2011

Mike Richey, expert on astro navigation and famous for his single-handed races across the Atlantic in the 26 foot junk rigged boat "Jester", passed away on 26th December at the age of 92. He was also one of the founders of the Royal Institute of Navigation, and served an apprenticeship with the sculptor and typrographer Eric Gill.
Read his obituary here.

 
WinAstro reviewed by Sejl magazine - Friday, July 30, 2010

The Norwegian magazine Seil has reviewed WinAstro. The report, written by Terje Bølstad, is available for reading on Seil's web site - he has been an enthusiastic user of WinAstro for many years..

 
WinAstro now with Planetarium Software - Friday, July 30, 2010

WinAstro is now supplied with a separate planetarium program, Stellarium, that lets you see the sky at night from your location, and identify the stars, planets and constellations. This helps you identify the body you want to take a sight on, and more generally to identify all the objects in the sky - a great way to make those night watches more interesting!

 
GPS jamming by Lightsquared - Wednesday, February 02, 2011

Lightsquared, who are developing a wireless data network, have been granted permission to use frequencies that are used by GPS, even though t is proven that thios will stop GPS receivers from operating near their transmitters. Luckily, sextants are not affected!

 read more ...
WinAstro reviewed by PBO - Tuesday, January 25, 2011

Practical Boat Owner has reviewed WinAstro and given it a very good *** rating. You can read the review here on the ybw.com web site.

 
Mike Richey passed away - Tuesday, January 25, 2011

Mike Richey, expert on astro navigation and famous for his single-handed races across the Atlantic in the 26 foot junk rigged boat "Jester", passed away on 26th December at the age of 92. He was also one of the founders of the Royal Institute of Navigation, and served an apprenticeship with the sculptor and typrographer Eric Gill.
Read his obituary here.

 
WinAstro reviewed by Sejl magazine - Friday, July 30, 2010

The Norwegian magazine Seil has reviewed WinAstro. The report, written by Terje Bølstad, is available for reading on Seil's web site - he has been an enthusiastic user of WinAstro for many years..

 
WinAstro now with Planetarium Software - Friday, July 30, 2010

WinAstro is now supplied with a separate planetarium program, Stellarium, that lets you see the sky at night from your location, and identify the stars, planets and constellations. This helps you identify the body you want to take a sight on, and more generally to identify all the objects in the sky - a great way to make those night watches more interesting!

 
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You are here > Using WinAstro > Astro Observation
English (United States)

Osservazione astronomica

WinAstro - celestial bodies

Celestial Bodies

Listed here are the azimuth, altitude and brightness of the sun, moon, planets and stars used in astro navigation. The list is sortable, so you can easily find and select the object you want to take a sight on.

If you have clicked on Advanced, you see the ephemeris data as well (as shown above). GHA (Aries) is given, as well as the Right Ascension, Declination, Greenwich Hour Angle and Local Hour Angle of the highlighted object. Clicking on Ephemeris to xxx.out allows you to save this data into a file, if you want. This data is calculated from astronomical formulae that are accurate for hundreds of years, so the program effectively does not expire, and no periodic updates are required, nor do you need to type in any values from this year's star almanac..

Select the body you want to take a sight on, make a note of the azimuth, and set the sextant to the altitude. Now just point it in the right direction, and you should see the body in the sights. Click on Observe to actually take the fix.

WinAstro - celestial bodies

Celestial Bodies

Listed here are the azimuth, altitude and brightness of the sun, moon, planets and stars used in astro navigation. The list is sortable, so you can easily find and select the object you want to take a sight on.

If you have clicked on Advanced, you see the ephemeris data as well (as shown above). GHA (Aries) is given, as well as the Right Ascension, Declination, Greenwich Hour Angle and Local Hour Angle of the highlighted object. Clicking on Ephemeris to xxx.out allows you to save this data into a file, if you want. This data is calculated from astronomical formulae that are accurate for hundreds of years, so the program effectively does not expire, and no periodic updates are required, nor do you need to type in any values from this year's star almanac..

Select the body you want to take a sight on, make a note of the azimuth, and set the sextant to the altitude. Now just point it in the right direction, and you should see the body in the sights. Click on Observe to actually take the fix.