• Navigation
• James A Van Allen

Download this app from Microsoft Store for Windows 10, Windows 8.1, Windows 10 Mobile, Windows Phone 8.1. See screenshots, read the latest customer reviews, and compare ratings for Celestial Navigation Data Calculator. Celestial Navigation Calculations. An imaginary sphere surrounding the Earth is used for calculations. This is known as the Celestial Sphere. Declination corresponds to Latitude and Hour Angles to Longitudes. Solving a sight uses spherical trigonometry. The triangle is known as the PZX triangle.

Updated Aug 16,2017 Size 27.08 MB - 27.49 MB Age Everyone Requirements ARM, x86, x64 Description Calculate and display, in textual form, Greenwich hour angle, declination, height computed and azimuth of the 57 navigational stars as listed in the Nautical Almanac, the four navigational planets, Venus, Mars, Jupiter and Saturn, the Sun and the Moon. Additional full data is shown for Polaris and the GHA of Aries. Additionally, calculated and displayed are corrections, that is refraction, apparent semidiameter, parallax, and the sum of these for aiding in correcting sights of the bodies taken by a sextant. Data is calculated for arbitrary assumed position on earth that can be entered as latitude and longitude in units of degrees, arcminutes and tenth of arcminute. All positional data is displayed as degrees, arcminutes, and tenth of arcminutes. Data is shown, except for Aries, if the respective body is above the horizon, regardless of the usability for observation.

Data is calculated for current system time what is converted and displayed as universal time. Arrangement of data is to match closely that found on (external link) and the notes given there mostly apply to this app. The source of the data is the Bright Star Catalog of 2017 and Jet Propulsion Laboratory’s DE241 development ephemeris. For calculation, the software package NOVAS C3.1 from U.S. Naval Observatory is used.

This app does not do anything more. No internet connection, no up- or downloads, no usage of your position data, no advertising or anything the like.

Just calculate and display. THERE IS NO GUARANTEE FOR ANY OF THE DISPLAYED INFORMATION, NOR FOR THE WORKING OF THE SOFTWARE AT ALL. DONT USE THIS SOFTWARE AS A SOURCE FOR NAVIGATION. UPDATES - This app does not talk to the store or to Microsoft.

Thus, you should proactively check at the store for getting updates. This is just the first edition of a whole series, there is more to come. FEEDBACK - Any feedback, ratings, comments, or feature requests are very welcome. Please submit such to the store. We would like to make this app better for you. The more feedback you give, the more we are encuraged to spend our time on this app.

RELEASE NOTES - This release, 1.1.0.11 as of 2017-05-21, fixes a minor bug that caused rare crashes and updates the description. FURTHER RELEASES PLANNED - The next major release planned before autumn 2017 will include all 170 stars listed in the almanac in addition to the stars known as the '57 navigational stars'. And, yes, there will be a star chart, but that'll last a little longer.

Copyright deepcomputing.de.

Celestial Navigation and Piloting Calculator: StarPilot 89T The state-of-the-art solution to navigation computations in a hand-held calculator. Our most popular StarPilot includes the following: TI 89 Titanium preloaded with StarPilot software. StarPilot CD and 70 page instruction manual. All StarPilot-89 programs are stored in ROM and are not affected by battery removal. Purchase StarPilot 89T Software Download Only at GMN Store. StarPilot 89T Celestial Navigation and Piloting Calculator Features StarPilot does celestial sight reductions of all bodies using high-precision internal almanac, plus mathematical and graphic solutions for position fixes, great circle, rhumb line, traverse and composite sailings, all current problems, piloting solutions, and much more.including lunar distance method of finding GMT from the sky and a unique graphical Sight Planner, and the new Sight Analyzer function that helps you get the most accurate results from a series of sights. The StarPilot is the state of the art solution to ocean navigation, fully up-gradeable with free upgrades available via Internet download, easy to use operation from logical menu lists, plus illustrated User's Guide with practice exercises.

Navigation

Options include: StarPilot software alone if you already have a TI-89 or it is more convenient to buy one yourself rather than our shipping it and PC-TI Link cable or equivalent, for those who already own a TI-89 and want to load the StarPilot into it. This type of link cable is also needed to move sight data and plots between calculator and PC and to install upgrades).

StarPilot 89T Celestial Navigation Sight Planner This function is used to plan sights or simply as a 'star finder' to identify what you see in the sky. It is a unique graphical feature of the StarPilot. The input is a latitude, longitude, date, and finally a time. Then StarPilot searches for sun and moon, then it searches through the stars, starting with the brightest and working down.

Generally you can stop at about magnitude 2.0 (stars about as bright as the Big Dipper stars) by pressing the Exit key or if you want only the very bright stars, stop earlier. Then it starts to search the planets and then it plots out the sky as you see at the top of this page. It takes about 4 minutes to compute the sky to the magnitude 2.2 level shown above, including the moon and two planets. Just bright stars is quicker. StarPilot 89T Celestial Navigation Sight Reductions If no special options are taken, sight reduction proceeds in a step-by-step sequence. Select Sight Reduction from the main menu, then select the body.

StarPilot then asks for the sight time, and date, body name, DR Lat and Lon, as well as the Index Correction and Height of Eye. In this example we will be doing 3 star sights the example from the 1999 Nautical Almanac. They all have the same DR position, date, IC, and HE, so we are better off storing these values so we don't have to enter them each time. StarPilot 89T Fix by Plot For all fixes, first step is to input speed, course, and fix time.

The DR position is always in the center of the screen. It is a circled dot. The cursor is a '+' sign, which also first shows in the center of the screen on top of the DR. We can move the cursor around the screen with the arrow keys. StarPilot's plot option lets you hunt around this way to learn more about the process. If you would like to see another use of the plot option showing its value for an actual exapmle, see this page.

StarPilot 89T Menu. Settings. Celestial Bodies. Sight Reduction.

Celestial Fix. Update DR.

James A Van Allen

Utilities.