Night Sky Tools - Astronomy

Night Sky Tools - Astronomy

100,000 - 500,000 downloads

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Night Sky Tools is the ultimate collection of astronomical tools perfect for anyone interested in astronomy.

The calculations are of a high enough accuracy for almost all amateur astronomy applications.

Due to the fact that astronomy is often best when far from civilization where mobile signal may not always be reliable. Therefore, this app is (almost) completely self-contained and does not require any internet connection for most of the information available. The only exceptions to this are the SOHO solar images and NGC/IC, Messier, Caldwell and Binary star images and weather forecast which are loaded dynamically, as well as the refreshing of satellite, comet and near-earth asteroid data.

Night mode turns the display red for night observations without having to ruin your night vision.

The Sky Map makes use of the direction sensors of the device to show the sky above (or below you). Most of the features can be toggled in the settings. The Sky Map also allows you to turn on the device's camera to see the view behind the device with the sky map superimposed over it.

The direction sensors of the device may need to be calibrated if the map appears to be pointing in the wrong direction. To calibrate the device's sensors wave the device in a figure-8 pattern. If the direction is still off, then the direction calibration can be adjusted manually by changing the setting in the Settings screen.

The observation log, allows you to save observations in the applications, as well as manage a list of astronomical equipment and observing locations. This equipment is also available for use in the Telescope Calculator.

Most of the data screens have an option to share the data via email, or other similar apps able to accept HTML content.

The Astronomical Time is also available as a Home screen widget. To use the widget, the app needs to be installed onto the internal storage instead of the SD card, otherwise it will not be available.

The Russian translation of the application is courtesy of Lirvux.

Some permissions are required for correct functioning of the app:
Location - used to determine user location throughout the app
Camera/Microphone - used to allow camera background in skymap. The microphone is never used but this permission is bundled with camera.
Photos/Media/Files - used to allow proper functioning of the full screen images and caching of images
Network access - used to do online searches, and downloading comet, asteroid and satellite data, object images and geocoding.

The app is jam-packed with features:
- Observe the sky with the skymap, planisphere, aurora forecast, polar finder, weather forecast, daylight map, SOHO images, Jupiter and Saturn's moons, Moon and Sun calendars and what's up.
- Detailed object information on the planets, constellations, comets, exoplanets, meteor showers, near-earth asteroids, satellites, as well as the full NGCIC, Caldwell, Messier, 6th catalog of Visual Binary Stars by the USNO and General Catalog of Variable Stars catalogs, as well as a SIMBAD search.
- Calculate angular separation, atmospheric refraction, magnitude, coordinate conversions, visual limiting magnitude, precession, redshift, and telescope airy disc, f-ratio and magnification
- Astronomical references, glossary, HR diagram and stellar classification.
- Astrophotography tools for exposure time, CCD resolution, Untracked exposure time and optimal f-ratio.
- Emphemerides for eclipses, equinoxes, conjunctions and oppositions, the sun, moon and planets
- Observation log
- Astronomical time

Tags: night sky tool.

Recently changed in this version

2.5.5 - Fixed weather forecast. Fixed equipment text in Russian version. Fixed decimal point in astronomical coordinates convertor.
2.5.4 - Added mounts and changed misc equipment to other equipment in observing log. Fixed jump after pinch in skymap manual mode. Fixed angstrom unit in glossary.
2.5.3 - Tweaked skymap performance. fixed blank screen on initial skymap load in manual mode.
2.5.2 - Fixed tracking and direction bugs in compass. Few minor issues fixed.

Comments and ratings for Night Sky Tools - Astronomy
  • (50 stars)

    by Ellie Bowditch on 10/12/2014

    Great if u love night sky there is even a compass

  • (50 stars)

    by Akhil Trivedi on 09/12/2014

    Highly recommend *****

  • (50 stars)

    by Pattamadai K Sivaswami on 07/12/2014

    The best app , ever for a starter to learn astronomy. Many incl weather is very accurate. Few calculations calls for inputs , which is beyond common people , may be suitable for researchers. Better to have both automatic , manual calculations built in. Also need Sharing via social apps to send information to others, Especially the weather forecasts.

  • (50 stars)

    by Aza De Anahuatl on 05/12/2014


  • (50 stars)

    by Frank Sewell on 05/12/2014

    Top quality astronomy app.

  • (50 stars)

    by Barry NoVa on 05/12/2014

    Brilliant app for most astronomers. Maybe a bit complicated for new people to astronomy, but still clear enough with its info to get some use even with very basic knowledge of the night sky. Only real suggestion I have is, when in night mode and you go to the search section ( while using the sky map ), the search bar isnt in red and so ruins your night vision. Its likely an oversight, but a fairly

  • (50 stars)

    by Hossam Roshdy on 04/12/2014

    Very useful ..... But if I want to put my location manually there is some thing wrong I can't do it

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