Celestron 11074-XLT, Инструкция по эксплуатации

Страница: 33 / 61

33
With your telescope set up, you are ready to use it for observing. This section covers visual observing hints for both solar system and deep sky
objects as well as general observing conditions which will affect your ability to observe.
O
O
b
b
s
s
e
e
r
r
v
v
i
i
n
n
g
g
t
t
h
h
e
e
M
M
o
o
o
o
n
n
Often, it is tempting to look at the Moon when it is full. At this time, the face we see is fully
illuminated and its light can be overpowering. In addition, little or no contrast can be seen
during this phase.
One of the best times to observe the Moon is during its partial phases (around the time of first or
third quarter). Long shadows reveal a great amount of detail on the lunar surface. At low power
you will be able to see most of the lunar disk at one time. The optional Reducer/Corrector lens
allows for breath-taking views of the entire lunar disk when used with a low power eyepiece.
Change to higher power (magnification) to focus in on a smaller area. Choose the lunar tracking
rate from the CPC's MENU tracking rate options to keep the moon centered in the eyepiece even
at high magnifications.
Lunar Observing Hints
To increase contrast and bring out detail on the lunar surface, use filters. A yellow filter works well at improving contrast while a neutral density
or polarizing filter will reduce overall surface brightness and glare.
O
O
b
b
s
s
e
e
r
r
v
v
i
i
n
n
g
g
t
t
h
h
e
e
P
P
l
l
a
a
n
n
e
e
t
t
s
s
Other fascinating targets include the five naked eye planets. You can see Venus go through its
lunar-like phases. Mars can reveal a host of surface detail and one, if not both, of its polar
caps. You will be able to see the cloud belts of Jupiter and the great Red Spot (if it is visible at
the time you are observing). In addition, you will also be able to see the moons of Jupiter as
they orbit the giant planet. Saturn, with its beautiful rings, is easily visible at moderate power.
Planetary Observing Hints

Remember that atmospheric conditions are usually the limiting factor on how much
planetary detail will be visible. So, avoid observing the planets when they are low on
the horizon or when they are directly over a source of radiating heat, such as a rooftop
or chimney. See the "Seeing Conditions" section later in this section.

To increase contrast and bring out detail on the planetary surface, try using Celestron eyepiece filters.