arcminute One sixtieth of a degree of angular measure.
It is believed to display only a small circular haze less than 1
arcminute across with understandably no stars resolved.
The sample alignment thus requires only
arcminute precision to locate the minimum in [[PHI].sub.II-I], occurring at the intersection of [[PHI].sub.0-I] and [[PHI].sub.II-0] curves.
Accordingly, JEM-X takes readings simultaneously with those of the SF1 and IBIS devices and provides imagery with
arcminute angular resolutions within the 3 to 35 keV prime energy band.
The new evidence comes from the
Arcminute Cosmology Bolometer Array Receiver (ACBAR), a South Pole network of 16 detectors that probes the temperature of the Big Bang's remnant radiation, known as the cosmic microwave background.
At 05:35 UT, Venus missed the dark southern limb by a scant 0.7
arcminute. The Moon was 31[degrees] high in the east-southeast sky, with the Sun 6[degrees] below the horizon (the onset of civil twilight).
A degree is made up of 60
arcminutes (60'), and each
arcminute is made up of 60 arcseconds (60").
A degree is made up of 60
arcminutes, and each
arcminute is divided into 60 arcseconds.
The team looked for sharp brightness changes in the CMB on
arcminute scales, corresponding in this case to the few million light-years that an individual galaxy's dark matter halo spans.
The human eye could theoretically resolve about 1/2
arcminute if it were made with machine perfection, but in the real world, folks with excellent eyesight can resolve about 2
arcminutes.
A tight Jupiter-Venus-Neptune conjunction had already formed in Ophiuchus, with Venus and Jupiter separated by less than 1[degrees] and Venus-Neptune separated by less than 1
arcminute.
One day before and after, if you're in the world's temperate latitudes, the setting point differs from the solstice setting point by about a half an
arcminute! That's about 1/60 of the Sun's diameter and finer than the human eye's resolving power.
arcminute - a unit of angular distance equal to a 60th of a degree