Download Sight reduction - v4.0

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Sight reduction - v4.0 latest version is 4.0, release date 2020-03-01, and has size 2.5 MB.Developed by Navigational Algorithms, Sight reduction - v4.0 requires Android version at least . Therefore you must update your phone if necessary.

Pretty much loaded, about 1000 downloads. You can update apps that have been downloaded or installed individually on your Android device if you want. Updating your apps gives you permission access to the latest features and improve application security and stability.

Celestial navigation - Astronavigation

Sight reduction:
- Marcq Saint Hilaire Line of Position, intercept method (p=Ho-Hc, Zn)
- Input for observed altitude Ho or instrumental Hs (Nautical Almanac data needed for the Sun and the Moon)
- Calculator: altitude Hc and azimuth Zn
- Running fix
- Plots up to 3 Marcq Saint Hilaire Lines of Position on Google maps
- Local hour angle (LHA)

Sight reduction is the process of deriving from a sight the information needed for establishing a line of position.
This app is a calculator to get the intercept from the assumed position of the observer AP(latitude, longitude), the geographical position of the celestial body observed, GP(Dec, GHA), and its corrected altitude Ho.
Manual and examples in the developer's website.

Ref: https://en.wikipedia.org/wiki/Sight_reduction

User interface:
- Zoom buttons +/-
- Map types: standard, terrain, and satellite
- GPS location. ("Location" App permission must be allowed. Switch on you GPS, and then automatic location detection is possible)