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Celestron LCM Series Manual

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direCTion buTTonS
The LCM has four direction buttons in the center of the hand
controlwhichcontrolsthetelescopemotioninaltitude(up
anddown)andazimuth(leftandright).Thetelescopecanbe
controlled at nine different speed rates.
Rate Button
PressingtheRATEkey(11)allowsyoutoinstantlychangethe
speed rate of the motors from high speed slew rate to precise
guiding rate or anywhere in between. Each rate corresponds to
a number on the hand controller key pad. The number 9 is the
fastestrate(approximately3ºpersecond,dependingonpower
source)andisusedforslewingbetweenobjectsandlocating
alignment stars. The number 1 on the hand control is the slowest
rate(2xsidereal)andcanbeusedforaccuratecenteringof
objects in the eyepiece. To change the speed rate of the motors:
• PresstheRATEkeyonthehandcontrol.TheLCDwilldisplay
the current speed rate.
• Pressthenumberonthehandcontrolthatcorrespondstothe
desired speed.
The hand control has a “double button” feature that allows you
to instantly speed up the motors without having to choose a
speed rate. To use this feature, simply press the arrow button
that corresponds to the direction that you want to move the
telescope. While holding that button down, press the opposite
directional button. This will increase the speed to the maximum
slew rate.
SeT up proCedureS
The LCM contains many user defined setup functions designed
to give the user control over the telescope’s many advanced
features. All of the set up and utility features can be accessed
by pressing the MENU key and scrolling through the options:
Tracking Mode — Once the LCM is aligned, the tracking
motors will automatically turn on and begin tracking the sky.
However, the tracking can be turned off for terrestrial use:
Alt-Az: This is the default tracking rate and is used
when the telescope has been properly aligned.
EQ North: Used to track the sky when the telescope
is polar aligned using an equatorial wedge in the
Northern Hemisphere.
EQ South: Used to track the sky when the telescope
is polar aligned using an equatorial wedge in the
Southern Hemisphere.
Off:Whenusingthetelescopeforterrestrial(land)
observation the tracking can be turned off so that the
telescope never moves.
Note: EQ North and EQ South tracking modes are only
needed with telescopes that can be polar aligned. The
LCM series are exclusively Alt-Az mounted telescopes and
do not require equatorial tracking.
Tracking Rate — In addition to being able to move the
telescope with the hand control buttons, the LCM will
continually track a celestial object as it moves across the night
sky. The tracking rate can be changed depending on what type
of object is being observed:
Sidereal: This rate compensates for the rotation of
the earth by moving the telescope at the same rate as
the rotation of the earth, but in the opposite direction.
When tracking in Alt-Az mode, the telescope must
make corrections in both altitude and azimuth.
Lunar: Used for tracking the Moon when observing the
lunar landscape.
Solar: Used for tracking the Sun when solar observing
using a proper solar filter.
View Time-Site — View Time-Site will display the last saved
time and longitude/latitude entered in the hand control.
User Defined Objects — The LCM can store up to 50 different
user defined objects in its memory. The objects can be daytime
land objects or an interesting celestial object that you discover
that is not included in the regular database. There are several
ways to save an object to memory depending on what type of
object it is:
Save Sky Object: The LCM stores celestial objects
to its database by saving its right ascension and
declination in the sky. This way the same object can
be found each time the telescope is aligned. Once
a desired object is centered in the eyepiece, simply
scroll to the “Save Sky Obj” command and press
ENTER. The display will ask you to enter a number
between 1-25 to identify the object. Press ENTER
again to save this object to the database.
Save Database (Db) Object: This feature allows you
to create your own custom tour of database objects
by allowing you to record the current position of
the telescope and save the name of the object by
selecting it from any one of the database catalogs.
These objects then can be accessed by selecting GoTo
Sky Object.
Save Land Object: The LCM can also be used as
a spotting scope on terrestrial objects. Fixed land
objects can be stored by saving their altitude and
azimuth relative to the location of the telescope at the
time of observing. Since these objects are relative to
the location of the telescope, they are only valid for
that exact location. To save land objects, once again
center the desired object in the eyepiece. Scroll down
to the “Save Land Obj” command and press
ENTER. The display will ask you to enter a number
between 1-25 to identify the object. Press ENTER
again to save this object to the database.
Enter R.A. - Dec: You can also store a specific set
of coordinates for an object just by entering the R.A.
and declination for that object. Scroll to the “Enter
RA-DEC” command and press ENTER. The display
will then ask you to enter first the R.A. and then the
declination of the desired object.
GoTo Object: To go to any of the user defined objects
stored in the database, scroll down to either GoTo
Sky Obj or Goto Land Obj and enter the
number of the object you wish to select and press
ENTER. The hand control will automatically retrieve and
display the coordinates before slewing to the object.
nine avaiLabLe SLeW SpeedS
1 = 2x 4 = 16x 7 = 1º / sec
2 = 4x 5 = 32x 8 = 2º / sec
3 = 8x 6 = 64x 9 = 3º / sec
… 14 …


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