When I think of a fix, a Starbucks Tall Pike usually comes to mind. I can’t survive without my coffee. This morning I left early to go downtown. The minute I walked out of our building, I felt the -20degC temperature and then I noticed a gleaming half moon in the clear blue sky. I […]
In the previous post I examined the iPhone10 Compass. In this post we will look at the iPhone10 Level application used as Sextant. The Level app is located in the Utilities/Measure icon. On January 8th_2020, I was sitting at my desk and the Moon was clearly in view between two newly constructed condo towers. I […]
I have always been fascinated with compasses. It all started with a mineral survey in Canada’s arctic as a summer student. I used a Silva Ranger compass which I still have many years after. Later on I worked in Indonesia and discovered that my compass didn’t work properly in the Southern Hemisphere because it was […]
El 23 de julio no pude dormir, algo me dijo que me levantara. Salí al balcón, el cielo estaba despejado y todas las luces de los apartamentos cercanos estaban apagadas. La luna no estaba del todo llena, pero era absolutamente hermosa a unos 128 grados. Entonces, de repente, lo vi solo. Al principio pensé que […]
Introduction AIS Automatic Identification System for Ships is a traffic system that uses VHF transponders on vessels to periodically send out location information. It was developed by Swedish inventor Hakan Lans and is similar in concept to the ADS-B transponder system used on aircraft for position reporting. AIS uses two VHF marine channels 87B (161.975 MHz) […]