Sight reduction
ID: com.Sightreduction
-
Version:
Varies with device
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Update on:
2021-06-09
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The description of Sight reduction
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 for Intercept method (p=Ho-Hc, Zn) altitude Hc and azimuth Zn
- Running fix
- Plots up to 3 Marcq Saint Hilaire Lines of Position on Google maps
- Local hour angle (LHA)
- List of navigational stars
- Logbook
- New optimized user interface
- GNSS fix to check the solution
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)
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 for Intercept method (p=Ho-Hc, Zn) altitude Hc and azimuth Zn
- Running fix
- Plots up to 3 Marcq Saint Hilaire Lines of Position on Google maps
- Local hour angle (LHA)
- List of navigational stars
- Logbook
- New optimized user interface
- GNSS fix to check the solution
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)
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Sight reduction Varies with device APK for Android Varies with device+
Version | Varies with device for Android Varies with device+ |
Update on | 2021-06-09 |
Installs | 10.000++ |
File size | 2.508.470 bytes |
Permissions | view permissions |
What's new | - Updated to Android 11.0 |
Versions history:
- 1. LATEST. Sight reduction Varies with device APK (2021-06-09, 2 MB)
- 2. Sight reduction 4.3 APK (2020-05-02, 2 MB)
- 3. Sight reduction 4.2 APK (2020-04-10, 2 MB)
- 4. Sight reduction 4.1 APK (2020-04-02, 2 MB)
- 5. Sight reduction 4.0 APK (2020-03-05, 2 MB)
- 6. Sight reduction 3.1 APK (2019-12-15, 2 MB)
- 7. Sight reduction 2.9 APK (2019-09-20, 2 MB)
- 8. Sight reduction 2.9 APK (2017-01-17, 2 MB)
- 9. Sight reduction 2.7 APK (2016-08-12, 2 MB)
- 10. Sight reduction 2.5 APK (2016-06-03, 2 MB)
- 11. Sight reduction 2.4 APK (2015-12-22, 965 KB)
- 12. Sight reduction 2.2 APK (2015-06-14, 952 KB)
- 13. Sight reduction 2.0 APK (2015-01-01, 952 KB)
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