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Gemini 2 Quick Start Guide

This guide will help you get started with your Gemini 2 controller. It covers installa-

tion, conﬁguration, and basic usage.

Installing Gemini 2

The Gemini 2 case is the same width as all previous Losmandy control units and can be

attached onto your mount or pier using the same hardware as your previous unit if you

are upgrading.

After mounting the unit, connect the motors using the 6 pin DIN cables. Make sure

you connect the RA motor to the RA connector and the Dec motor to the DEC connec-

tor on the Gemini 2 unit.

There are two serial ports on the Gemini 2. Serial port 1 is typically used to communi-

cate with a computer and serial port 2 is used to connect to the graphical hand con-

troller. Use the coiled cable with RJ-12 connectors to connect the hand controller to

serial port 2 on the Gemini unit. Serial Port 1 can also be used with a GPS unit. Please

note that the pinouts of the serial ports are not the same as on the original Gem-

ini (now referred to as Gemini 1).

Please do not plug a serial cable or device designed

for the Gemini 1 into the Gemini 2.

There could be damage to the Gemini 2 or your device. The com ports on the

Gemini 2 have +5V DC on them. See link below for wiring diagram.

Connect the supplied power cable to either of the power connectors on the right side

of the unit. Be sure to use a regulated power supply or a battery which can provide

12~18 volts DC at 3 amps or higher.

Getting Started

After all the cables are connected, power on the Gemini 2 unit. When you power up

the unit, you will see the following screens

1 - When you power up for

the ﬁrst time you will see this

screen. Press anywhere.

2 - Using a plastic stylus or

retracted ballpoint pen,

press the center of each of

the three dots as they

appear sequentially.

Summary of content (9 pages)

PAGE 1
Gemini 2 Quick Start Guide This guide will help you get started with your Gemini 2 controller. It covers installation, configuration, and basic usage. Installing Gemini 2 The Gemini 2 case is the same width as all previous Losmandy control units and can be attached onto your mount or pier using the same hardware as your previous unit if you are upgrading. After mounting the unit, connect the motors using the 6 pin DIN cables.
PAGE 2
3 - This screen shows that calibration is complete. After five seconds you will see... 4 - ...this screen. Press QUICK START. 5 - Select the type of mount you are using. 6 - Enter Longitude and Latitude or press QUERY GPS if you have a GPS device. Manually enter Time Zone. Use “–” to indicate western hemisphere. 7 - Enter Date & Time manually if not using a GPS device. A numeric keypad will appear upon selecting a field.
PAGE 3
9 - Press ALIGN if you want to calibrate the mount for accurate equatorial positioning. 10 - Press GOTO BRIGHT STAR. 11 - Select a star for alignment. Gemini 2 only shows objects above the horizon. 12 - When the mount is done slewing to the Bright Star, use the manual control to center the object, then press MENU. 13 - Press ALIGN again. 13 - Press INITIAL ALIGNMENT. The mount is now aligned and ready for use..
PAGE 4
15 - GOTO - Once the mount is aligned use this screen to go to any library or stored object. More accurate positioning can be enabled by using the ADDITIONAL ALIGNMENT feature and selecting at least three objects spread across the sky in the same meridian, and one object in the opposite meridian. Repeat steps 9~13 then press Additional Alignment for each calibration object.
PAGE 5
Network All Gemini 2 parameters and many observing functions are accessible using a built-in web interface. In order to use the web interface, you will need to make a network connection to your computer. This is most easily done using a cross-over Ethernet cable directly between Gemini’s Ethernet connector and your computer’s network connector. Alternatively, you can use standard cables between Gemini and an Ethernet hub, and between your computer and the hub.
PAGE 6
1. Connect the Gemini 2 unit to the existing network through a hub, switch, router or wireless adapter. 2. Power Gemini on. It is important that you do this only after you’ve connected the network cable so that it can communicate with the DHCP server. 3. Make sure your computer is set to receive an IP address from DHCP. Each operating system does this in a different way, so refer to your OS documentation. 4. Gemini uses NetBIOS name resolution so that you don’t need to type the IP address into your browser.
PAGE 7
Also note that one of the Web pages of the Gemini 2’s web interface is a new mobile interface control page that be accessed through a Smart Phone such as an iPhone, Android phone, or normal web browser. You just have to have the smart phone on a wireless connection in the same network that the Gemini 2 is on. Setup using the Web Interface You’ve probably already entered the initial setup information using the hand controller as described above.
PAGE 8
Civil” or “Set UTC” button, depending on which form you entered the date and time. IMPORTANT: After setting the mount type, observing location, date and time, it is best to turn off your Gemini and then back on again while the mount is in its standard startup position (counterweight shaft down and OTA pointing to the celestial pole). Using the Hand Controller The graphical hand controller uses a combination of touch screen and physical buttons to allow you to control your Gemini system.
PAGE 9
· Speed – Set the rate for the various speeds (Slew, Center, Move, and Guide) as a multiplier of sidereal rate. Note that the setting for Guide speed is multiplied by 10, so to set a guiding speed of 0.7x sidereal, enter “7”. · Track – Set the tracking rate of the mount. For full details of these functions, please refer to the latest Gemini manual at www.losmandy.com GoTo Function Button This button allows you to point your telescope at a specific target or set of coordinates.