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Magellan II Telescope Computer System Instruction Manual
 III. Hand Controller
IMPORTANT NOTICE! Never use a telescope or spotting scope to look at the Sun! Observing the Sun, even for the shortest fraction of a second, will cause irreversible damage to your eye as well as physical damage to the telescope or spotting scope itself.
[ toc ] A. Liquid Crystal Display

The large Liquid Crystal Display (LCD) has two rows of 16 characters for displaying Magellan function menus, telescope position and object information. The LCD has red LED's to back light the display and can be adjusted to 16 levels of brightness.

[ toc ] B. Keys

Magellan II has a 19-key back lighted membrane switch panel to provide expanded function and user ease of operation. The keypad permits direct entry of the number, telescope motor slewing, speed selection/display and one key catalog selection. The keypad is backlighted and can be dimmed along with the LCD display in 16 levels of brightness.

[ toc ] 1. Enter

Pressing and releasing the ENTER key activates the menu function indicated by the LCD arrow positioned to the left of the menu item. Menu items followed by three dots (i.e. HELP...) mark expanding menus.

Several menu items require information to be edited. Holding the ENTER key down for a moment will cause a blinking cursor to appear at the edit point. Each press of a number key will move the cursor one character to the right until the last character is reached. Once the last character of the field is reached, pressing ENTER again will end editing if the field is properly formatted. Otherwise, the cursor repositions itself at the beginning of the field to allow for corrections.

[ toc ] 2. Mode

Pressing the MODE key cycles the display through the four operating modes. During editing, pressing MODE will terminate an edit and restore the original value.

[ toc ] 3. Find

Pressing this key while in the object find mode will cause the telescope to slew at 32x speed to the object selected. This key is only active when the object is within 2° of the present telescope position. The intention of this function is to make the final adjustment to telescope position after the larger moves have been done manually.

[ toc ] 4. Direction (N, S, E, W)

Pressing these keys will cause the telescope to slew in the direction selected at the speed indicated by the speed LED's on the right side of the handbox. These keys are also used in some editing functions to move the cursor to a particular character in a sequence without changing characters skipped.

[ toc ] 5. Numeric and Function

These 10 keys have dual purposes based on the mode of the Magellan handbox. For modes where data is being entered, like selection of a catalog object number, these keys are used for numeric input as indicated by the number on the key. Pressing the numeric key will enter the number into the character indicated by the cursor and move to the next logical character in the sequence. After the last number is entered, the ENTER key is pressed indicating the acceptance of the input as a whole.

When not in an editing mode these keys are assigned certain specific functions, keys 0, 1, 4 and 7 are used to change the slew rate of the telescope. They are marked with a speed value from 2x to 32x and when pressed will alter the subsequent telescope slew rates as selected by the user. Pressing these keys will also alter the speed display LED's associated with each key along the right side of the handbox.

Keys 2, 3, 5, 6 and 9 are used as catalog selection keys when not in an editing mode. The CNGC Catalog can be selected by pressing the CNGC key (3). The Star Catalog and Planets can be selected by pressing the STAR key (6). The Messier Object Catalog is selected using the M key (9). The IC Catalog is selected by pressing the 2 key. The User Catalog is selected by pressing the 5 key.

[ toc ] 6. Prev and Next

Pressing the PREV key moves the display LCD arrow up the list of menu items, while pressing the NEXT key moves the display LCD arrow down the list of menu items. In the BRIGHTNESS mode, these keys adjust the intensity of the LCD and keypad backlighting.

[ toc ] C. Communication Ports

Communication ports are found on the bottom of the handbox case. These ports are designed to accept cables using the standard high reliability telephone technology plugs. A positive snap action design prevents the cable from disconnecting during usage.

[ toc ] 1. Telescope Port

The telescope port accepts a 4-pin plug from the telescope control panel. This coiled cable carries two signals and power to the Magellan Handbox from the telescope. This connector should only be connected or disconnected while the telescope power is off.

[ toc ] 2. RS-232 Port

The RS-232 port is used to connect a personal computer to the Magellan System for added features. Magellan communicates telescope position information via this interface to software like Epoch 2000, which can then display star maps of the telescope field of view and perform other helpful functions.

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