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Celestron C4.5 User Manual

Celestron C4.5
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388
BR
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IAT
8
8
Im
Figure
5-7
While
the
latitude
scale
has
a
range
of
to
90°,
going
below
20
?
will
cause
the
counterweight
shaft
to
hit
the
tripod.
The
Latitude
Scale
The
easiest
way
to
polar
align
your
C4.5
is
with
the
latitude
scale.
Unlike
other
methods
that
require
you
to
find
the
celestial
pole
by
identifying
certain
stars
near
it,
this
method
works
using
a
known
constant
to
determine
how
high
the
polar
axis
should
be
pointed.
The
latitude
scale
for
the
C4.5
is
just
above
the
azimuth
adjustment
screws
(see
figure
5-6).
The
constant,
mentioned
previously,
is
a
relationship
between
your
latitude
and
the
angular
distance
the
celestial
pole
is
above
the
northern
(or
southern)
horizon.
The
angular
distance
from
the
northern
horizon
to
the
north
celestial
pole
is
always
equal
to
your
latitude.
To
illustrate
this,
imagine
that
you
are
standing
on
the
north
pole,
latitude
+90°.
The
north
celestial
pole,
which
has
a
declination
of
+90°,
would
be
directly
overhead,
or
90?
above
the
horizon.
Now
let's
say
that
you
move
one
degree
south.
Your
latitude
is
now
+89°
and
the
celestial
pole
is
no
longer
directly
overhead.
It
has
moved
one
degree
closer
toward
the
northern
horizon.
This
means
the
pole
is
now
89?
above
the
northern
horizon.
If
you
move
one
degree
further
south,
the
same
thing
happens
again.
As
you
can
see
from
this
example,
the
distance
from
the
northern
horizon
to
the
celestial
pole
is
always
equal
to
your
latitude.
If
you
are
observing
from
Los
Angeles,
which
has
a
latitude
of
34?,
then
the
celestial
pole
would
be
34?
above
the
northern
horizon.
Alla
latitude
scale
does
then
is
to
point
the
polar
axis
of
the
telescope
at
the
right
elevation
above
the
northern
(or
southern)
horizon.
To
align
your
telescope
using
this
method:
1.
Make
sure
the
R.A.
axis
(also
called
the
polar
axis)
is
pointing
due
north.
Use
a
landmark
that
you
know
faces
north,
or
you
can
use
a
magnetic
compass
with
the
local
correction
for
magnetic
declination.
2.
Make
sure
that
the
tripod
is
level.
3.
Move
the
equatorial
head
up
or
down
until
the
latitude
indicator
points
to
your
latitude
(see
figure
5-7).
For
specific
information
on
adjusting
the
equatorial
head,
please
see
the
section
on
"Adjusting
the
Mount."
This
method
can
be
done
in
daylight,
thus
eliminating
the
need
to
fumble
around
in
the
dark.
Although
this
method
does
NOT
put
you
directly
on
the
pole,
it
will
limit
the
number
of
corrections
you
will
make
when
tracking
an
object.
Astronomy
Basics
+
29

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Celestron C4.5 Specifications

General IconGeneral
BrandCelestron
ModelC4.5
CategoryTelescope
LanguageEnglish

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