Excellent learning and backup tool

Ive never done celestial before. This was very easy to use and learn when combined with the instructions on the web site. Like the other review said, use this with the Spyglass App and you dont even need a sextant for reasonable accuracy. I could reliably get a fix within 5 NM each time while in a rolling boat on a windy lake. That should be close enough to find an island. I could see this being a possible emergency backup for use in case of equipment failure to get you there as long as you had a solar charger for your iPod.

Jeffrey Blackburn about ezSights Celestial Navigation