1. Sight reduction is the process of deriving from a sight the information needed for establishing a line of position.
2. This app is a calculator to get the intercept from the assumed position of the observer AP(latitude, longitude), the geographical position of the celestial body observed, GP(Dec, GHA), and its corrected altitude Ho. - GPS location. ("Location" App permission must be allowed.
1. Would be very handy if there was a time perameter in the LOP box.Does not appear to have instructions or nautical almanac.Works fine nowGreat app, but I have two points to mention.
2. Accurate fix.fix it please..Looks great on the surface.... No place to enter the time of the sight.
3. The work-around I use is to enter a negative value in some other APP and then copy/paste into the IC correction space.
4. DON'T BOTHERVery Helpful! ThanksIdeal for saving time plotting a fix or simply checking your work.
5. This app is useless for navigation because you can't specify the time at each sight.
6. Argh! 2) It's seemingly impossible to enter a negative IC (instrument correction).
7. 1) When I twist the smartphone (Samsung S-7) to horizontal all the previous LOPs disappear.
8. In conjunction with the Nautical Almanac app that I have this is a near perfect combination.
9. I'm not giving up my GPS units, but it sure is nice to have some old-school stuff around as a back-up.So easy to use.
10. Recommend using the developer's almanac app alongside this one.
11. So I have to re-enter all that data.