Celestron CPC DELUXE 1100 HD, Instruction Manual

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R –
‡ƪ‡ –‘”
A telescope in which the light is collected by means
of a mirror.
Resolution The minimum detectable angle an optical system
ƒ†‡–‡ –Ǥ‡ ƒ—•‡‘ˆ†‹ơ”ƒ –‹‘ǡ–Š‡”‡‹•ƒŽ‹‹–
to the minimum angle, resolution. The larger the
aperture, the better the resolution.
Right The angular distance of a celestial
Ascension
ǣȋȌ ‘„Œ‡ –‡ƒ•—”‡†‹Š‘—”•ǡ‹—–‡•ƒ†
seconds along the Celestial Equator eastward
from the Vernal Equinox.
S –
Schmidt Rated the most important advance in optics .
Telescope in 200 years, the Schmidt telescope combines
–Š‡„‡•–ˆ‡ƒ–—”‡•‘ˆ–Š‡”‡ˆ”ƒ –‘”ƒ†”‡ƪ‡ –‘”
for photographic purposes. It was invented in
1930 by Bernhard Voldemar Schmidt (1879-1935).
Sidereal Rate This is the angular speed at which the Earth is
rotating. Telescope tracking motors drive the
telescope at this rate. The rate is 15 arc
seconds per second or 15 degrees per hour.
T –
Terminator The boundary line between the light and dark
portion of the Moon or a planet.
U –
Universe The totality of astronomical things, events, relations
ƒ†‡‡”‰‹‡• ƒ’ƒ„Ž‡‘ˆ„‡‹‰†‡• ”‹„‡†‘„Œ‡ –‹˜‡Ž›Ǥ
V –
Variable Star A star whose brightness varies over time due to
either inherent properties of the star or something
eclipsing or obscuring the brightness of the star.
W –
Waning Moon The period of the Moon’s cycle between
full and new, when its illuminated portion
is decreasing.
Waxing Moon The period of the Moon’s cycle between
new and full, when its illuminated portion
is increasing.
Z –
Zenith The point on the Celestial Sphere directly above the
observer.
Zodiac The zodiac is the portion of the Celestial Sphere that
lies within 8 degrees on either side of the Ecliptic.
The apparent paths of the Sun, the Moon, and the
planets, with the exception of some portions of the
path of Pluto, lie within this band. Twelve divisions,
or signs, each 30 degrees in width, comprise the
zodiac. These signs coincided with the zodiacal
constellations about 2,000 years ago. Because of the
Precession of the Earth’s axis, the Vernal Equinox
has moved westward by about 30 degrees since
–Šƒ––‹‡Ǣ–Š‡•‹‰•Šƒ˜‡‘˜‡†™‹–Š‹–ƒ†–Š—•‘
longer coincide with the constellations.