Bedienungsanleitung Celestron CPC Deluxe 800 HD - 11007 (Seite 16 von 50) (Englisch)

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Tracking Rate – In addition to being able to move the telescope with the

hand control buttons, the CPC 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:

 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.

 Used for tracking the Moon when observing the

lunar landscape.

 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 o,

the hand control will only display the last saved time and location.

User Dened Objects – The CPC can store up to 400 dierent user

dened 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 specic 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 rst the R.A. and then the declination of the

desired object.

GoTo Object – To go to any of the user dened 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 CPC will automatically retrieve and display the coordinates before

slewing to the object.

To replace the contents of any of the user dened objects, simply save a

new object using one of the existing identication numbers. The CPC will

replace the previous user dened 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 specic 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 oset distances to the nearest matching objects.

This feature can serve two purposes. First, it can be used to identify

an unknown object in the eld of view of your eyepiece. Additionally,

Identify Mode can be used to nd 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 Object or Messier catalogs, the hand control

will let you know that the Ring Nebula (M57) is approximately 6° from

your current position. Searching the Double Star catalog will reveal that

Epsilon Lyrae is only 1° away from Vega. To use the Identify feature:

• Press the MENU button and select the Identify option.

• Use the UP/DOWN scroll keys to select the catalog that you would

like to search.

• Press ENTER to begin the search.

Note: Some of the databases contain thousands of objects, and

can therefore take a minute or two to return the closest object.

Precise GoTo

The CPC has a Precise GoTo function that can assist in nding extremely

faint objects and centering objects closer to the center of the eld of

view for astrophotography and CCD imaging. Precise GoTo automatically

searches out the closest bright star to the desired object and asks

the user to carefully center it in the eyepiece. The hand control then

calculates the small dierence between its GoTo position and its

centered position. Using this oset, the telescope will then slew to the

desired object with enhanced accuracy. To use Precise GoTo:

1. Press the MENU button and use the UP/DOWN keys to select

Precise GoTo.

2. Choose Database to select the object that you want to observe from

any of the database catalogs listed

3. Choose RA/DEC to enter a set of celestial coordinates that you wish

to slew to.

4. Once the desired object is selected, the hand control will search out

and display the closest bright star to your desired object. Press ENTER

to slew to the bright alignment star.

5. Use the direction buttons to carefully center the alignment star

in the eyepiece.

Press ENTER to slew to the desired object.

To store a set of coordinates (R.A./Dec) permanently into the CPC

database, save it as a User Dened Object as described above.

Celestron CPC Deluxe 800 HD - 11007 Seite 16

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