A-1
Appendix A. CSAT3 Orientation
A.1 Determining True North and Sensor Orientation
The orientation of the CSAT3 negative x-axis is found by reading a magnetic
compass and applying the site-specific correction for magnetic declination;
where the magnetic declination is the number of degrees between True North
and Magnetic North. Magnetic declination for a specific site can be obtained
from a USGS map, local airport, or through a NOAA web calculator (Section
A.2). A general map showing magnetic declination for the Conterminous
United States in 2004 is shown in Figure A-1.
FIGURE A-1. Magnetic Declination for the Conterminous United States (2004)