Emerald Observatory displays a wealth of astronomical information all on one screen, in a unique but understandable format. Information includes:- 12- and 24-hour ordinary clock time- Times of rise and set for the Sun, the Moon, and the 5 classical planets- Times of the beginning and ending of twilight- Heliocentric orrery (display of the planets in orbit around the Sun)- Altitude and azimuth for the same bodies (one body at a time)- Current phase and apparent orientation and relative size of the moon- Current regions of day and night on a world map- The Equation of Time, solar time, UTC time, and sidereal time- Month, day, year, and leap-year indicator- Daily alarm (delivered as local notification on iOS 4+ if app is not running)- Eclipse simulator- Displayed times are synchronized via NTP to atomic clock standard- Uses iPad location, or the latitude and longitude may be set manuallyA setting is available to allow the display to stay on continuously. Like all apps Emerald Observatory can not change the devices internal clock.)

Emerald Observatory for iPad alternatives

Watch Tuner Timegrapher

Watch Tuner Timegrapher is a mechanical and automatic watch testing application. It displays the frequency diagram of the watch and measures rate, beat error, amplitude and beats per hour. If you have any questions, suggestions or any troubles using this app - dont hesitate to write me.

  • size 1.3 MB

Polar Scope Align Pro

Please note that the only in-app purchases available are tips. All functionality is included. The main reason for this is that while I intend to keep support for iOS 6/7 devices for as long as I am allowed, even for very few users, it adds an overhead so I should make sure it is really needed.

  • rating 5.0
  • size 29.2 MB

LunaSolCal

Calculate times of sunrise, sunset, moonrise, moonset and more for your location at any given date. The following data is calculated:- Sunrise - Solar noon- Sunset- Day length- Equation of time- Declination- Civil twilight (Dawn/Dusk)- Nautical twilight (Dawn/Dusk)- Astronomical twilight (Dawn/Dusk)- Azimuth at sunrise and sunset- Altitude during solar noon- Sun track- Date and time of Seasons (Spring, Summer, Fall, Winter)- Solstice and Equinox dates- Date and time of next solar eclipse- Moonrise- Moon transit- Moonset- Moon phase- Distance- Declination- Date and time of next new moon- Date and time of next full moon- Azimuth at moonrise and moonset- Altitude during moon transit- Moon track- Date and time of next lunar eclipseSome information for the current day can also be viewed in the notification center. To specify the location of interest either get the position from the built-in GPS or Wifi receiver or select a city from a database with over 30,000 cities in over 200 countries.

  • rating 4.92856
  • size 39.0 MB

iFlares

Iridium flares are phenomenon caused by the polished antennas of the Iridium communication satellites reflecting sunlight onto the Earth below and appearing as a brief, bright flare. iFlares calculates the occurrences of Iridium satellite flares for your current position (or any other location on earth). That way your Iridium flares achievements are not only automatically synchronized between your different devices, you also can compare them with your Game Center friends.- Calculating Iridium flares directly on the device (no active Internet connection needed)- Visual navigation mode for directions- Audio countdown when watching flares- Add your own favorite locations- Multiple time windows- Many additional information on the Iridium satellites and the calculated flares- Reminders for upcoming flares- Keeps record of all seen Iridium flares and automatically synchronizes the achievements to Game Center.- Universal app for iPhone, iPad and iPod touch

  • size 27.5 MB

Polar Scope Align

Polar Scope Align will calculate the position of Polaris or Octantis in your Polar Scope reticle for your location (using your phones GPS), allowing a quick and accurate polar alignment. It is one of the few programs that are accurate even in lower latitudes by correcting for atmospheric refraction (so expect results to agree only with precise software and not most simplistic polar align apps - see the Accuracy section in the website). The main reason for this is that while I intend to keep support for iOS 6/7 devices for as long as I am allowed, even for very few users, it adds an overhead so I should make sure it is really needed.

  • size 24.8 MB