Download Sight reduction - v4.0

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Developed by Navigational Algorithms, Sight reduction - v4.0 requires Android version at least . Therefore you must update your phone if necessary.

Sight reduction - v4.0 APK latest version is 4.0, release date 2020-03-01, and has size 2.5 MB.

Statistics about 1000 downloads are available from Google Play. You can update apps that have been downloaded or installed individually on your Android device if you want. Updating your apps gives you more. access to the latest features and improve the security and stability of the application.

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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)