Celestron 11074-XLT, Instruction Manual

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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 the telescope is polar aligned, this can be accomplished by moving
the telescope in right ascension only. When mounted in Alt-Az mode, the
telescope must make corrections in both R.A. and declination.
Lunar Used for tracking the moon when observing the lunar landscape.
Solar Used for tracking the Sun when solar observing.
View Time-Site - Displays the current time and longitude/latitude downloaded from the GPS receiver. It will also display other relevant
time-site information like time zone, daylight saving and local sidereal time. Local sidereal time (LST) is useful for knowing the right
ascension of celestial objects that are located on the meridian at that time.
View Time-Site will always display the last saved time and
location entered while it is linking with the GPS. Once current information has been received, it will update the displayed information.
If GPS is switched off, the hand control will only display the last saved time and location.
User Defined Objects - The CPC can store up to 400 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 CPC 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 1-200 to identify the object. Press ENTER again to
save this object to the database.
Save Land Object : The CPC 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 1-200 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.
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. CPC
will automatically retrieve and display the coordinates before slewing to the object.
To replace the contents of any of the user defined objects, simply save a new object using one of the existing identification numbers;
CPC will replace the previous user defined object with the current one.
Get RA/DEC - Displays the right ascension and declination for the current position of the telescope.
Goto R.A/ Dec - Allows you to input a specific R.A. and declination and slew to it.
Identify
Identify Mode will search any of the CPC database catalogs or lists and display the name and offset distances to the nearest matching
objects. This feature can serve two purposes. First, it can be used to identify an unknown object in the field of view of your eyepiece.
Additionally,
Identify Mode can be used to find other celestial objects that are close to the objects you are currently observing. For
example, if your telescope is pointed at the brightest star in the constellation Lyra, choosing Identify and then searching the Named Star
catalog will no doubt return the star Vega as the star you are observing. However, by selecting Identify and searching by the Named