Remember that we multiplied the Arc Seconds
at 600 x 60 (see sidebar) because we were using the spotting scope on 60X.
Its three rotating laser planes are perpendicular to 2 arc seconds
and flat to 2 arc seconds
in a 180-degree sweep.
Higher power reveals the magnitude 10 central star quite well, although it is not the one which is illuminating the nebula; that honour belongs to a magnitude 16 dwarf companion, 1.65 arc seconds
The satellite can map extended objects and locate point sources to within a few arc seconds
. It can also provide spectral information to determine the temperature, density, and chemical abundances of the emitting gas."
This results in an angular resolution of 0.0003 arc seconds
. Calibration and compensation of systematic errors bring a system accuracy of 0.06 arc seconds
* Digital Display in Arc Seconds
, Inches/10" or mm/M.
Other near-misses include Arc seconds
for 1990 Niel winner Epervier Bleu and for the Group 1 Prix Vermeille scorers Magic Night (1991) and Leggera (1998).
Only one of the two quasars, which are 4.2 arc seconds
apart, registers in radio wavelengths, while both can be seen in the visible range.
The 360,000-position NC table offers an indexing accuracy of [+ or -]7 arc seconds
and an indexing repeatability of [+ or -]3.5 arc seconds
But they remain intrigued by the Cape observations of 1862, which are internally consistent and show the comet drifting in the sky southwest of its nominal path by 10 arc seconds
at the start of October to nearly 18 arc seconds
at the end.