Operating system: Windows XP/7/8/8.1/10
Interface language: Russian, English
Price: on request
The main task of nautical astronomy is to determine the position of a ship in the sea by the measured altitudes of the luminaries. The astronomical method of locating a location has many advantages: it is available everywhere, it is completely autonomous and accurate enough for the high seas. But this method requires special training, both for making observations and for calculations.
This software package is designed to automate computational processes in the course of determining the position of the astronomical method.
The software package includes: Astroblank, Astronomical almanac, Sunrise, StarFinder, TBA, Position, Auxiliary celestial sphere, Datum и Calendarium.
Astronomical almanac
Astronomical almanac program is designed to calculate the equatorial and horizontal coordinates of luminaries and other auxiliary quantities required in nautical astronomy. Replaces the Marine Astronomical Yearbook (МАЕ, in Russia).
Astroblank
Calculations for determining the location by the heights of the luminaries can be quickly and accurately performed on a computer, but manual calculation according to tables occupies an important place in the preparation of the navigator. Manual calculation requires special training. This program is intended for checking the manual calculation.
The program is a form Ш-8Б in which you only need to enter the initial data for the task. Initially, the program was intended for teachers of nautical astronomy, but can also be used by students for self-control.
The algorithms for calculating the equatorial coordinates of the stars are the same as in the Astronomical almanac program, but with an imitation of manual calculation by MAE. The calculation of the horizontal coordinates and the correction of the heights of the luminaries also reproduce the manual calculation, that is, with errors. Therefore, it is not advisable to use this program for a practical determination of the place, although there will be practically no difference in the final result from an accurate calculation.
For teachers of nautical astronomy and captain-mentors, this program comes with example tasks for collective use. Problems for other combinations of luminaries or for other years can be supplied separately, by order, including in text form.
Sunrise
The program is designed to calculate the phenomena of solar and lunar illumination for a given point and time zone. It is possible to print the results.
StarFinder
The program is designed to identify the luminary (stars and planets) by the measured altitude and azimuth.
TBA
The program is intended for self-control when teaching the calculation of the horizontal coordinates of luminaries using tables TBA-52 or TBA-57. The program simulates manual calculation using tables.
Position
The program for determining the position of the vessel along the lines of position.
Auxiliary celestial sphere
Auxiliary celestial sphere. The sphere is a mathematical model for solving problems of nautical astronomy, which allows one to consider the stars not in space, but on the surface of a sphere.
Datum
Program for converting geodetic coordinates between WGS-84, SK-42, PZ-90 parameters and national coordinate systems. Conversion of geodetic coordinates to topographic coordinates of the Gaussian projection and vice versa.
Calendarium
The Gregorian calendar introduced in 1582 (in Russia in 1918) is now used as an international calendar. But in different countries, besides the international one, other calendars are also used. This program is designed to compare dates in some of the most common calendars today: Gregorian (international) calendar, Julian calendar (old style), Arabic lunar calendar, Chinese lunisolar calendar, Hebrew lunisolar calendar.