minute of arc

(redirected from Arc-second)
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Synonyms for minute of arc

a unit of angular distance equal to a 60th of a degree

References in periodicals archive ?
The average of all five values yields an area of 202[+ or -]17 square arc-seconds which is the value selected here.
5 arc-second on the resolution a ground-based telescope can achieve.
1 arc-second, the camera successfully captured the structural detail because of the sulfur's extremely bright emission, Hester notes.
This process was repeated five times for each pair and he values were then averaged and multiplied by the scale constant to give the separation of the double star in arc-seconds.
It's crucial that we get down to an accuracy of less than three arc-seconds to within north.
It features a balanced line driver output circuit that allows for long distance signal transmissions, and the system's 780 nm semiconductor laser offers maximum output power of 5 mW, with signal error with 25 arc-seconds.
A balanced line driver output allows for long distance signal transmissions, and the system's 780 nm semiconductor laser offers maximum output power of 5 mW, with signal error of 25 arc-seconds.
The geometric precision of the instrument itself yields better than 10 arc-seconds accuracy before compensation.
5 arc-seconds, a SR non-contact read head, and a Si interface.
04 arc-seconds apart -- roughly twice the resolution expected from the Hubbie Space Telescope once its optical flaws are corrected.
This object is a very wide 130 arc-seconds from the white dwarf, or at least 2,500 astronomical units, but they share the same motion through space.
One of the suspects is offset 8 arc-seconds from the center of the edge-on spiral galaxy ESO 243-49 in Phoenix.