Celestron CGX 700 Maksutov Cassegrain Telescope Celestron PWI Telescope Contro - Page 11

All-Star Polar Alignment (ASPA) for EQ Setups CPWI and the mount are now aligned to the night sky, but the EQ mount may not be accurately polar aligned. Celestron's proprietary All-Star Polar Alignment procedure (ASPA) can help correct equatorial mount's polar alignment quickly and easily. To perform an ASPA in CPWI, you must have at least 3 alignment points in your alignment model.(In the Data bar at the top of the screen, "Pointing Model" should indicate at least 3 points.) After a successful 3-point (or more) alignment is completed, CPWI will automatically ask if you want to perform an All-Star Polar Alignment. Otherwise, you can select "Perform ASPA" from the Alignment section in the Menu. You will receive a notification if you need more alignment points to complete an ASPA. Once you select All-Star Polar Alignment, you will see the All-Star Polar Alignment window. Your polar alignment error will be displayed. Take note of the displayed error if needed, then click Next. Select a star for ASPA from the SkyViewer. If you are in the Northern Hemisphere, you should select a star on the southern horizon. Southern Hemisphere users should select stars on the northern horizon. Do not use any stars directly overhead near zenith, directly east or west at any elevation above the horizon, or near the North Pole for Northern Hemisphere users or South Pole for Southern Hemisphere users. Once you have found a star for ASPA, select it, then select GoTo in the ASPA pop-up window. Center the selected star in the eyepiece (or camera) using the onscreen slew controls. Once the star is centered in the field of view, press the "Centered" box in the ASPA window. (NOTE: Remember to finish centering with the UP and RIGHT direction keys for best polar alignment accuracy.) The mount will then slew to the position the star should be if the mount were perfectly polar aligned. If the mount is very far from being polar aligned, then the star may no longer even be in the field of view! In this case, you will need to use the finderscope to find the star. Now, use the mount's altitude and azimuth polar alignment adjustment knobs to re-center the star in the eyepiece's field of view. Polar alignment is now complete. If you want to check your results, re-align the mount in CPWI by selecting Delete Alignment from the Alignment section of the Menu, then select Perform Alignment. After realigning, check your polar align error by performing ASPA again to review your results. At this point, you can either exit ASPA and start using CPWI, or perform another ASPA if you'd like. The second time you do an ASPA, the mount's polar alignment adjustment knobs should need minimal-if any-adjustment. Once you have completed one ASPA after initial Alignment, you are ready to use CPWI to control your Celestron telescope. Slewing to an Object To select your desired object in the SkyViewer, use your cursor to click and drag to navigate the planetarium. Once you find the object you want to slew to, click on it. A Target window will pop up. Select GoTo. The telescope will then slew to the object you have chosen. The object should be in the field of view of the telescope. When you select an object in the SkyViewer, you also have the option to select Info. If you are connected to the internet, clicking Info will take you online to where you can learn more information about the object. If you are connected via WiFi in direct connect mode, you will not be able to use this feature, since your computer is connected directly to the WiFi module. The telescope's current position is indicated by the green crosshair in the SkyViewer. Slewing the telescope in CPWI will move the green crosshair in real time as you slew. When you make a selection in the SkyViewer, a yellow crosshair will appear over the object. 9