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Earth, Sun and Moon (EarthView)

Earth, Sun and Moon (EarthView)
  • #: 13897
  • Price: $1.99 In Apple Store
  • Category: Utilities
  • Updated: 2009-04-18
  • Current Version: 1.0.4
  • 1.0.4
  • Size: 1.20 MB
  • Language: English
  • Seller: Craig Vosburgh
  • Requirements: Compatible with iPhone, iPod touch, and iPad. Requires iOS 2.2 or later
  • © 2009 Craig Vosburgh
  •  Add to Favorite apps

 

Description

This application can determine your location on the Earth (via location services or through manual entry) and calculate the Sun and Moon rise/set times for that location. You can enter the elevation you would like to use for the calculation to allow for determination of astronomical (-18deg), nautical (-12deg) and civil twilight (-6deg) as well as the physical horizon (use -.5deg for the elevation as the atmosphere acts as a lens for the apparent position of the Sun and Moon when on the Horizon)

In addition, the app allows you to see the Earth rendered either as a 3D globe or a 2D map using photo realistic texture maps for the Earth model (you can only zoom 2x due to texture map size limitations of the iPhone).

The orientation of the map is easily determined by a simple rotation of the device from portrait (3D) to landscape (2D). In either orientation you can zoom in and out as well as pan using the touch screen. Controls are given to allow you to select: the texture maps used, whether shading is performed, whether to draw political boundaries and if a lat/lon grid should be presented.

Feedback Answers/Notes

All,

Some clarification on the features/capabilities.

-This is NOT a replacement for Google Earth (I purposefully have made it to work off the network as I use it for camping in the back country where there is no cell coverage) The graphics are not intended to allow you to zoom into great detail but rather to allow you to see which parts of the Earth are currently lit/dark.

-The Rise/Set times for the Sun and Moon have been checked against the Naval Observatory web site and appear to be accurate (within a minute). My guess is that there is confusion around Sun rise/set versus twilight (which is when the Sun is anywhere from 6 to 18 degrees below the horizon depending on the definition you want to use) The new version (already released) allows you to specify the elevation you would like to use (rather than hard wiring it to the horizon) Finally, if in using the app you have a specific location where the times do not appear to be correct please send me an email with the specifics and I'll run it to ground.

-AM/PM versus 24hr clock. I'll look into making that user configurable (seems like a reasonable enhancement request)

Thanks for the feedback and keep it coming.

-Craig

What's New in Version 1.0.4

This is an enhancement release to address features requested by the user community. The additions are:
-Ability to calculate twilights (Civil, Nautical and Astronomical) in addition to rise/set times for the Sun.
-Ability to override the system time to allow for calculations on any arbitrary date.
-Ability to select metric or imperial units for display

iPhone Screenshots

Earth, Sun and Moon (EarthView) iPhone Screenshot 1
Earth, Sun and Moon (EarthView) iPhone Screenshot 2
Earth, Sun and Moon (EarthView) iPhone Screenshot 3

Video Reviews

No video review.

Customer reviews

Write a Review

Rated 3/5 based on 3 customer reviews.

 

5/5 stars

Nice interface, very functional

:
I sail around the world and need to know when I can expect the sun and moon to rise and set times for MANY different locations. Sure, I can get the same information off the Internet (when I am lucky enough to be connected) or an Almanac, but nothing beats the convenience of having it at my finger tips whenever I need it. Thanks for a solid and relatively inexpensive App. Please consider plotting a history of previous locations as a track over the globe - this would be a nice addition.

3/5 stars

Need Real Globe

:
Once zoomed in the navigation is very jumpy. What I'm looking for is a _really_ good globe App. You know, like the old fashion ball globes we had in the classroom with all the current political, physical, geographic data for both land and sea but with the advantages of the digital age of being able to zoom way in, have many layers of data that can be turned on or off, etc. That would be worth $5. Maybe more if there was a try before you buy that could convince me it was worth $10.

2/5 stars

Nice app, room for more

:
Works as advertised for me. Would love to see the following enhancements:
- option to draw a line across the globe showing the center of the suns position, Moving north in winter and spring and south in the summer and fall (for those of us in the northern hemisphere)
- option to change the earth view (globe) from being centered on your location to show the tilt of the earth's axis according to season (centered on where the suns rays are striking directly)
- add view of the moon with current phase, in landscape mode would show position relative to the horizon
- add a similar view of the sun, changing the intensity of sun according to the time of the day

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The information may be outdated (2017-03-06 17:06:24). For actual information go to iTunes

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