is it correct to give the units of resolution as radians per metre or in arc seconds per millimetre
or is the unit just in radians or in arc seconds
2007-12-13 13:56:31 · 3 answers · asked by fpa06mr 5 in Science & Mathematics ➔ Astronomy & Space
Resolution is given in arc seconds; actually, fractions of one arc second is more typical for all but the smallest aperture. A fourteen inch instrument has a resolution of .35 arc seconds (more or less).
Hope that helps,
GN
2007-12-13 14:04:25 · answer #1 · answered by gn 4 · 0⤊ 0⤋
Telescope resolution is stated in angular units, specifically, arc-seconds. It refers to the minimum angular separation at which a pair of stars can be resolved into two distinct disks.
A telescope characteristic specified in arc-seconds per millimeter is probably image scale. This tells you what the linear separation is at the focal plane of the telescope. That's useful for determining the best pixel size for a camera to be used with the telescope.
2007-12-13 14:51:54 · answer #2 · answered by injanier 7 · 0⤊ 0⤋
The unit is always arc seconds.
2007-12-13 14:14:40 · answer #3 · answered by campbelp2002 7 · 0⤊ 1⤋