Minute and second of arc
= Minute and second of arc
{wiki}
A minute of arc is one sixtieth of a degree; a second of arc is one sixtieth of a minute of arc. These units describe small astronomical <angles>, including <astronomical seeing>.
= Minute and second of arc
{wiki}
A minute of arc is one sixtieth of a degree; a second of arc is one sixtieth of a minute of arc. These units describe small astronomical <angles>, including <astronomical seeing>.