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What does"sub-milliarcsecond territory" mean? I know nothing of satellite tech.
by bb123 6y ago
What does"sub-milliarcsecond territory" mean? I know nothing of satellite tech.
- 0_____0 6y agoit's an angular measurement. applied here it means the angular resolution of an optical system. a degree of arc is divided into minutes of arc (MoA)(1/60 degree each), and there are 60 arcseconds in a minute of arc. Two points that are 1 milliarcsecond apart, projected on a flat surface 200km away, are about 1mm apart on that surface. edit: (can plug "tan(0.001 arcseconds) * 200km in mm" into google to check this out for yourself)