User`s guide

http://www.eggtimerrocketry.com/page16.php?view=preview&category=9&image=135
Once you have done that, you launch, and when you get the last location of your rocket (for
example, from MapSphere as detailed above), you create a new waypoint with those
coordinates. Once you’ve done that, simply click on Navigate to Waypoint, and bring up
either the Map or the Compass function to show you where you are in relation to your rocket
and how far you need to go. Note that the distance and direction are generally calculated from
your GPS position, not from your actual compass position. The compass in an iPhone can be
thrown off by stray magnetic fields, so this is not a bad thing, but it means that you need to be
walking in order to get a reasonably accurate direction and distance. Once you are pointed in
the general direction of your rocket, you will find that the map or compass pointer will pretty
much stay pointed in that direction, that’s a good indication that you’re walking (or driving, if
it’s a big field) in the right direction.
OK, here’s what the screens look like in MotionX…
Add the destination Waypoint…
http://www.eggtimerrocketry.com/page16.php?view=preview&category=9&image=137
http://www.eggtimerrocketry.com/page16.php?view=preview&category=9&image=138
..using coordinates…, first Latitude…
http://www.eggtimerrocketry.com/page16.php?view=preview&category=9&image=139
…then Longitude…
http://www.eggtimerrocketry.com/page16.php?view=preview&category=9&image=140
Save, then Start Navigation. Click on the Map…
http://www.eggtimerrocketry.com/page16.php?view=preview&image=141&category=9
You will also get a track with a pointer (it’s not on this picture, because we were so excited
about getting the data that we forgot to take the pictures… these are from the saved data). Start
walking in the direction of your rocket, and the pointer will show you which direction you need
to go to get to it. Note again that you must be moving for it to be accurate, because it’s using a
delta GPS position to figure out your track direction.
In the case of this flight, it landed about .64 miles away from the launchpad, in a big field of
sagebrush. This is what it looked like when it landed: