Celestron CPC Deluxe 800 HD Computerized Telescope CPC Deluxe HD Manual - Page 12

• Don't worry about confusing planets for stars when selecting alignment objects. SkyAlign works with the four brightest planets (Venus, Jupiter, Saturn and Mars) as well as the Moon. In addition to the planets, the hand control has over 80 bright alignment stars to choose from (down to 2.5 magnitude). • Rarely SkyAlign will not be able to determine what three alignment objects were centered. This sometimes happens when a bright planet or the Moon passes near one of the brighter stars. In situations like these, it is best to try to avoid aligning to either object if possible. • For the best possible pointing accuracy, always center the alignment stars using the same final movements as the direction of the GoTo Approach (by default this will be using the up arrow button and the right arrow button). Approaching the star from this direction when looking through the eyepiece will eliminate much of the backlash between the gears and assure the most accurate alignment possible. AutoTwo-Star Align As with SkyAlign, Auto Two-Star Align downloads all the necessary time/ site information from orbiting GPS satellites. Once this information is received, the CPC will prompt you to slew the telescope and point at one known star in the sky. The CPC now has all the information it needs to automatically choose a second star that will assure the best possible alignment. Once selected, the telescope will automatically slew to the second alignment star to complete the alignment. With the CPC set up outside with all accessories attached and the tripod leveled, follow the steps below to align the telescope: 1. Once the CPC is powered on, Press ENTER to begin alignment. 2. Use the Up and Down scroll keys (10) to select AutoTwo-Star Align and press ENTER. 3. The hand control will display the last time and location information that was entered or downloaded from the GPS. Use the Up and Down buttons to scroll through the information. Press ENTER to accept the downloaded information or press UNDO to manually edit the information. 4. The display will now prompt you to select a bright star from the displayed list on the hand control. Use Up and Down buttons (6 and 9 on the keypad) to scroll to the desired star and then press ENTER. 5. Use the arrow buttons to slew the telescope to the star you selected. Center the star in the crosshairs of the finderscope and press ENTER. Finally, center the star in the eyepiece and press ALIGN. 6. Based on this information, the CPC will automatically display the most suitable second alignment star that is above the horizon. Press ENTER to automatically slew the telescope to the displayed star. If for some reason you do not wish to select this star (perhaps it is behind a tree or building), you can either: • Press the UNDO button to display the next most suitable star for alignment. • Use the UP and DOWN scroll buttons to manually select any star you wish from the entire list of available stars. Once the desired star is displayed, press ENTER to automatically slew the telescope to the displayed star. When finished slewing, the display will ask you to use the arrow buttons to align the selected star with the cross hairs in the center of the finderscope. Once centered in the finder, press ENTER. The display will then instruct you to center the star in the field of view of the eyepiece. When the star is centered, press ALIGN to accept this star as your second alignment star. When the telescope has been aligned to both stars the display will read Alignment Success, and you are now ready to find your first object. Two-Star Alignment With the two-star alignment method, the CPC requires the user to know the positions of two bright stars in order to accurately align the telescope with the sky and begin finding objects. Here is an overview of the twostar alignment procedure: 1. Once the CPC is powered on, use the UP and DOWN scroll keys (10) to select Two-Star Align, and press ENTER. 2. Press ENTER to accept the time/site information displayed on the display, or wait until the telescope has downloaded the information from the GPS satellites. 3. The SELECT STAR 1 message will appear in the top row of the display. Use the UP and DOWN scroll keys (10) to select the star you wish to use for the first alignment star. Press ENTER. 4. CPC then asks you to center in the eyepiece the alignment star you selected. Use the direction arrow buttons to slew the telescope to the alignment star and carefully center the star in the finderscope. Press ENTER when centered. 5. Then, center the star in the eyepiece and press ALIGN In order to accurately center the alignment star in the eyepiece, you may wish to decrease the slew rate of the motors for fine centering. This is done by pressing the RATE key (11) on the hand controller then selecting the number that corresponds to the speed you desire. (9 = fastest, 1 = slowest). 6. CPC will then ask you to select and center a second alignment star and press the ALIGN key. It is best to choose alignment stars that are a good distance away from one another. Stars that are at least 40º to 60º apart from each other will give you a more accurate alignment than stars that are close to each other. Once the second star alignment is completed properly, the display will read Alignment Successful, and you should hear the tracking motors turn-on and begin to track. One-Star Align One-Star Align allows you to download all the same information as you would for the Two-Star Align procedure. However, instead of slewing to two alignment stars for centering and alignment, the CPC uses only one star to model the sky based on the information given. This will allow you to roughly slew to the coordinates of bright objects like the Moon and planets and gives the CPC the information needed to track objects in altazimuth in any part of the sky. To use One-Star Align: 1. Select One-Star Align from the alignment options. 2. Press ENTER to accept the time/site information displayed on the display, or wait until the telescope has downloaded the information from the GPS satellites. 3. The SELECT STAR 1 message will appear in the top row of the display. Use the Up and Down scroll keys (10) to select the star you wish to use for the first alignment star. Press ENTER. 4. The CPC then asks you to center in the eyepiece the alignment star you selected. Use the direction arrow buttons to slew the telescope to the alignment star and carefully center the star in the finderscope. Press ENTER when centered. 5. Then, center the star in the eyepiece and press ALIGN 6. Once in position, the CPC will model the sky based on this information and display Alignment Successful. 10 >> www.celestron.com