Sight Calc

Wow! What a wonderful app! If you use the US Power Squadron SR96a sight reduction form this makes the math so easy. Great job on the version 2 upgrade. So much easier to use and the results are perfect. Works perfectly. Thank you. Keep up the good work.

You put in the LHA, plus the AP Lat or DR Lat, and the declination, and out pops azimuth, true azimuth, and Hc. Couldn’t be easier to learn and use and is a great time saver. You can also input a meridian angle eastward instead of the LHA by inputting it as a negative LHA. I find that calculating a meridian angle eastward is more intuitive for rising bodies than LHA so this saves me the step of converting it into a LHA. If you understand how celestial works it will also give you great circle initial course and distances just as easily. Just substitue the difference in longitude for the LHA and the Lat of your arrival for dec. I have not yet tried using it to pre-calculate altitudes for planning sights but I’m sure it would be handy for that too. Five stars for simple easy and very useful!

I used this a lot to get through my Jr Navigation course last year with The United States Power Squadron. It was a tremendous work saver.