Celestron CPC Deluxe 925 HD Computerized Telescope CPC Deluxe HD Manual - Page 13

Note: Once a One-Star Alignment has been done, you can use the Re-alignment feature (later in this section ) to improve your telescope's pointing accuracy. Solar System Align Solar System Align is available in alt-az mode (scope mounted directly on the tripod) and equatorial mode (scope mounted on a wedge). Solar System Align is designed to provide excellent tracking and GoTo performance by using solar system objects (Sun, Moon and planets) to align the telescope with the sky. Solar System Align is a great way to align your telescope for daytime viewing as well as a quick way to align the telescope for night time observing. Never look directly at the Sun with the naked eye or with a telescope (unless you have the proper solar filter). Permanent and irreversible eye damage may result. 1. Select Solar System 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 OBJECT message will appear in the top row of the display. Use the Up and Down scroll keys (10) to select the daytime object (planet, Moon or Sun) you wish to align. Press ENTER. 4. The CPC then asks you to center in the eyepiece the alignment object you selected. Use the direction arrow buttons to slew the telescope to the alignment object and carefully center it in the finderscope. Press ENTER when centered. 5. Then, center the object in the eyepiece and press ALIGN. Once in position, the CPC will model the sky based on this information and display Alignment Successful. Tips for Using Solar System Align • For safety purposes, the Sun will not be displayed in any of the hand control's customer object lists unless it is enabled from the Utilities Menu. To allow the Sun to be displayed on the hand control, do the following: 1. Press the UNDO button until the display reads "CPC Ready". 2. Press the MENU button and use the Up and Down keys to select the Utilities Menu. Press ENTER. 3. Use the UP and Down keys to select Sun Menu and press ENTER. 4. Press ENTER again to allow the Sun to appear on the hand control display. The Sun can be removed from the display by using the same procedure as above. • To improve the telescope pointing accuracy, you can use the Re-Align feature as described below. EQ North / EQ South Alignment EQ North and EQ South Alignments assist the user in aligning the telescope when polar aligned on an optional equatorial wedge. Similar to the Altazimuth alignments described earlier, the EQ alignments gives you the choice of performing an AutoAlign, Two-Star alignment, OneStar alignment or Solar System alignment. EQ AutoAlign The EQ AutoAlign uses all the same time/site information as the Alt-Az alignments, however it also requires you to position the tube so that the altitude index markers are aligned (see figure 4-2), and then rotate the telescope base until the tube is pointed towards the Meridian (see figure 4-3). Based on this information the CPC will automatically slew to two selected alignment stars to be centered and aligned. To use EQ Auto-Align: 1. Select EQ North or South Align from the alignment options 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. Select EQ AutoAlign method and press ENTER 4. Use the up and down arrow buttons to move the telescope tube upwards until the altitude index markers are aligned. The altitude index markers are located at the top of the fork arm. See figure 4-2. 5. Use the left and right arrow buttons to move the telescope base until the fork arms are horizontally parallel and the tube is pointing towards the Meridian. 6. Based on this information, the CPC will automatically display the most suitable alignment stars that are above the horizon. Press ENTER to automatically slew the telescope to the displayed star. If for some reason you do not wish to select one of these stars (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. 7. CPC then asks you to center in the eyepiece the alignment object you selected. Use the direction arrow buttons to slew the telescope to the alignment object and carefully center it in the finderscope. Press ENTER when centered. 8. Then, center the object in the eyepiece and press ALIGN. 9. Once you press the ALIGN button, the telescope will automatically slew to a second alignment star. Repeat steps 6 and 7 to complete alignment. FIGURE 4-2 Altitude Index Markers EQTwo-Star Align The EQ Two-Star Align follows most of the same steps as the Alt-Az Two-Star Align. This alignment method does not require the user to align the altitude index markers or point towards the Meridian, but it does require the user to locate and align the telescope on two bright stars. When selecting alignment stars, it is best to choose stars that, a) have a large separation in azimuth and b) both are either positive or negative in declination. Following these two guidelines will result in a more accurate EQ Two-Star alignment. >> www.celestron.com 11