Meade RCX400 Periodic Error Correction, Train Menu Option, Update Menu Option, Erase Menu Option

computer control panel/ Plug the other end into a USB port of your PC Next, you will install the Autostar Suite software from the CD ROM. This software pro- vides a menu that allows you to download the latest version of Autostar II software into the Autostar II handbox.

4.Select Autostar Suite on the CD ROM to install Autostar Suite onto your PC. Follow the on-screen instructions.

5.Once the Autostar Suite software installs, double-click the new “Autostar Suite” icon on the desktop.

6.Go to the Telescope menu and select “Update Autostar.” The “Autostar Update” screen displays. Click the “Upgrade Autostar Software Now” button.

7.The application detects your telescope type and the version of Autostar soft- ware on your handbox.

8.A window displays asking if you wish to download the latest version of Autostar from your hard drive (if you previously downloaded it separately from the Meade website) or from the internet. Select one of the choices and follow on-screen instructions.

9.The download will take several minutes (download time depends on your inter- net connection, speed of your computer and so forth). When the download is complete, the new version of the Autostar software displays.

Periodic Error Correction

If you wish to perform high-precision astrophotography, you may wish to "train" your telescope in order to keep objects that you are imaging dead center in the telescope's field of view during the photographic exposure. Periodic error correction (PEC) helps to remove the slight perturbations from center that occur due to the mechanical nature of a telescope. To perform this procedure, you need to use a high-power reti- cle, such as the 9mm reticle (see OPTIONAL ACCESSORIES, pages 48 - 50). PEC training is available for both drives.

Train Menu Option

Important Note: The Train option overwrites any previous PEC data.

1.Select "Train" from the RA PEC menu (in the "Setup: Telescope" menu) and press

ENTER.

2.Look through the reticle. Use the Arrow keys to keep the star centered in the reticle cross-hairs. Autostar II displays a count of the 75 positions of the worm gear. When the count reaches 75, one cycle is complete. A full cycle takes about 20 minutes.

3.Select "Train" from the R.A. PEC menu (in the "Setup: Telescope" menu) and press

ENTER.

4.Press MODE to exit.

Update Menu Option

Use the Update option to further refine your training; it is recommended that you update your original training two or three times when first using your telescope. Update does not overwrite the data, but updates the training using information gath- ered from both the last and the current training sessions. Press the MODE key to exit from this option. If you wish to further refine your training, select this menu again and repeat the procedure.

Erase Menu Option

Select this option to erase all PEC training data.

On and Off Menu Options

Select "On" when you want the telescope to use the training information. Select "Off" when you do not want for the telescope to use the training information. Select "On" to enable the Smart Drive.

46	Looking at or near the Sun will cause irreversible damage to your eye. Do not point this telescope at or near the
	Sun. Do not look through the telescope as it is moving.