Celestron CPC 925 GPS XLT Computerized Telescope Instruction Manual - Page 22

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. Helpful Hint 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 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 finding extremely faint objects and centering objects closer to the center of the field 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 difference between its goto position and its centered position. Using this offset, 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. • Choose Database to select the object that you want to observe from any of the database catalogs listed • Choose RA/DEC to enter a set of celestial coordinates that you wish to slew to. 2. 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. 3. 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 Defined Object as described above. 22