Night Sky Tools - Astronomy

Night Sky Tools - Astronomy

50,000 - 100,000 downloads

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This app is a collection of astronomical tools and charts 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.

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.

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

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

When using Android 4.0+, the Upcoming Events is able to add events to the device's calendar by using a long click.

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.

Android 2.2+ is now supported, but Android 4.0+ to get the full user experience.

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 list of tools in the app are as follows:
- Upcoming astronomical events
- What's up now
- What's up tonight
- Angular separation calculator
- Astronomical constants and symbols
- Astronomical time
- Astronomy glossary
- Astrophotograhy: Exposure time
- Astrophotograhy: CCD resolution
- Astrophotograhy: Optimal f-ratio
- Astrophotograhy: Max untracked exposure time
- Atmospheric refraction calculator
- Binary stars lookup
- Bright stars list
- Caldwell catalog
- Comet lookup
- Compass
- Conjunctions and oppositions of the planets
- Constellations
- Coordinate convertor
- Daylight map
- Eclipses
- Equinoxes
- Ephemerides of the Sun, Moon, planets and dwarf planets
- Exoplanets
- Greek Alphabet reference
- Jupiter's moons
- Magnitude calculator
- Messier catalog
- Meteor Showers
- Moon calendar
- Near-Earth asteroid lookup
- NGC/IC catalog lookup
- Observation log
- Planetary orbit animation
- Planisphere
- Precession calculator
- Redshift calculator
- Satellites
- Saturn's Moons
- SI Units reference
- SIMBAD object search
- Sky Map
- SOHO realtime solar images
- Stellar classification
- Telescope airy disc calculator
- Telescope f-ratio calculator
- Telescope magnification calculator
- Transiting exoplanets
- Variable stars lookup
- Weather forecast

Tags: night sky tool.

Recently changed in this version

2.2.4 - Fixed crash of search log items. Fixed bug in eclipse times.
2.2.3 - Fixed crash on edit log item in night mode
2.2.2 - Fixed crash on Sky Map settings.
2.2.1 - Added font size preference. Fixed weather forecast headings. Fixed Atmosphereic extinction and refraction mixup. Fixed various layouting and spelling mistakes. Fixed Whats Up Now force close in Android 2.x
2.2.0 - Added What's Up Now. Allowed the app to access a larger heap to avoid Out of Memory errors (Android 3.0+)

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

    by BJ Jenkins on 09/04/2014

    Way better than Google's version! Way more detail! Way more accuracy! Thank you!

  • (70 stars)

    by Michael Parsons on 07/04/2014

    fantastic app birlliant for first time astonomers. i use the app to help navigate the night sky and ha snt let me down so far. well done good job.

  • (70 stars)

    by Jim McIntosh on 04/04/2014

    The sky chart will not do the pan operation on this device. I have seen the program on other tablets and have come to the conclusion that the developers need to investigate the Dell Venue 8 to determine the problem.

  • (70 stars)

    by Nitin Bhandare on 02/04/2014

    Have been using as default app while stargazing

  • (70 stars)

    by Michael Dumene on 02/04/2014

    Much better than the sky chart which came installed on my phone. Bright and easy to read. No freezes so far. I have this on my phone and tablet. Both work well.

  • (70 stars)

    by Ranjan Mitra on 27/03/2014

    This application is excellent for sky watchers and astronomy enthusiasts. Great job.

  • (70 stars)

    by Wasu Khan on 27/03/2014

    Excellent app