NavList:

Thanks Bill.  I have been learning Astro Nav over the winter with a sailing simulator and Astron is superb for checking out sights and workings, esp because all the relevant intermediate values are displayed.  I have passed the RYA Ocean theory course and now teaching myself to use logarithims and only a pencil, paper and a copy of Norries. (the way my Father did in his days in the MN)  Delighted that your programme is back on-line, because I also use Astron on android when I'm out and about practicing with a sextant, along with GPS Anti-spoof to check how much of a bollocks I make with my Davis sextant!!  Next project for the winter is to read the sky without Stellarium on my lap in red mode!!  Best wishes Ross