Sight reduction Application icon

Sight reduction 4.11

4.9 MB / 10K+ Downloads / Rating 4.3 - 124 reviews


See previous versions

Sight reduction, developed and published by Navigational Algorithms, has released its latest version, 4.11, on 2024-11-14. This app falls under the Travel & Local category on the Google Play Store and has achieved over 10000 installs. It currently holds an overall rating of 4.3, based on 124 reviews.

Sight reduction APK available on this page is compatible with all Android devices that meet the required specifications (Android 5.0+). It can also be installed on PC and Mac using an Android emulator such as Bluestacks, LDPlayer, and others.

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App Screenshot

App Screenshot

App Details

Package name: com.Sightreduction

Updated: 3 months ago

Developer Name: Navigational Algorithms

Category: Travel & Local

New features: Show more

App Permissions: Show more

Installation Instructions

This article outlines two straightforward methods for installing Sight reduction on PC Windows and Mac.

Using BlueStacks

  1. Download the APK/XAPK file from this page.
  2. Install BlueStacks by visiting http://bluestacks.com.
  3. Open the APK/XAPK file by double-clicking it. This action will launch BlueStacks and begin the application's installation. If the APK file does not automatically open with BlueStacks, right-click on it and select 'Open with...', then navigate to BlueStacks. Alternatively, you can drag-and-drop the APK file onto the BlueStacks home screen.
  4. Wait a few seconds for the installation to complete. Once done, the installed app will appear on the BlueStacks home screen. Click its icon to start using the application.

Using LDPlayer

  1. Download and install LDPlayer from https://www.ldplayer.net.
  2. Drag the APK/XAPK file directly into LDPlayer.

If you have any questions, please don't hesitate to contact us.

App Rating

4.3
Total 124 reviews

Reviews

5 ★, on 2020-04-23
Works fine now

4 ★, on 2017-06-12
Great app, but I have two points to mention. 1) When I twist the smartphone (Samsung S-7) to horizontal all the previous LOPs disappear. So I have to re-enter all that data. Argh! 2) It's seemingly impossible to enter a negative IC (instrument correction). The work-around I use is to enter a negative value in some other APP and then copy/paste into the IC correction space. In conjunction with the Nautical Almanac app that I have this is a near perfect combination. I'm not giving up my GPS units, but it sure is nice to have some old-school stuff around as a back-up.

5 ★, on 2018-06-15
So easy to use. Accurate fix.

1 ★, on 2015-07-15
fix it please..

1 ★, on 2015-09-24
Looks great on the surface.... No place to enter the time of the sight. Really Lame. DON'T BOTHER

5 ★, on 2015-05-27
Very Helpful! Thanks

Previous Versions

Sight reduction 4.11
2024-11-14 / 4.9 MB / Android 5.0+

Sight reduction 4.10
2024-01-14 / 5.3 MB / Android 4.4+

Sight reduction 4.9
2023-11-27 / 5 MB / Android 4.4+

About this app

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 (output is copied to clipboard)
- 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)

New features

Updated to:
-play-services-maps:18.2.0
-android API 34

App Permissions

Allows applications to access information about networks.
Allows applications to open network sockets.
Allows an app to access approximate location.
Allows an app to access precise location.