- Finished R stats and figure generation for Peru and Bolivia datasets for Angelica’s presentation at IUFRO S. Korea.
- Completed preliminary version of solar positioning software. The code uses JPL ephemeris data for maximum accuracy, reads rectangular universal coordinates of earth and sun locations and converts them to celestial equatorial (right ascension and declination) compensating for light-time displacement and gravitational effects of other planetary bodies, then converts from celestial to topocentric using lat, long and altitude for location adjusting from true to apparent location caused by refraction, then adjusts from Gregorian to Julian date and compensates for precision issues with double floating point precision data in IDL, maintaining < second temporal accuracy via normalizing all Julian dates to the epoch 01.01.2009 at 00:00:00 Universal Time.
- Accuracy/Precision of the code has been tested extensively versus the JPL Horizons online ephemeris generator and has < 0.2 degrees of Elevation and Azimuth from 1950-2050, more than adequate!
* Image from http://www.bsu.edu.
