The NEW AWR SYSTEM provides state of the art performance for tracking, control, position readout and PC interfacing. It is programmable by the user to fit onto new or existing scopes. The system uses an Intelligent Drive Box to control all motor movements, readout and control from the handset. It is fully portable requiring only a 12V DC power supply. It does not need a computer, even to perform GOTOs. With a computer, the major Planetarium programmes, such as 'THE SKY' or 'SKYMAP PRO' can issue GOTO commands or can track the telescope.

HANDSET

Position readout coordinates RA hh:mm:ss DEC +dd mm' ss' or ALT-AZ Resolution of measured coordinates of the order of 20 arcseconds. Real Time Clock (battery backed) with crystal oven to maintain a very low temperature coefficient. Sidereal and Universal time displays. User programming of rates used for GUIDE CENTRE MOVE SLEW. Selection and programming of Sidereal, Solar, Lunar, Track rates. Tracking resolution 0.005 arc second per second. Event timing function (100 events). Time recording accuracy to 50ms. GOTO coordinate entered on keyboard using shortest available route including tube reversal procedure for German Equatorials. User setup for telescope ratios (including FRICTION drive), 4 sites, time, date. Calibration on a single star. Second CAL for polar axis alignment Periodic error and backlash programming. Standard Autoguider input. Database (14000 objects) included in kits Object selections on magnitude, constellation and object type. Planetarium programmes can control handset. Operation in Northern or Southern hemisphere.

These are obtained whatever mount, drive system and motors are fitted. The specific specifications are telescope reduction ratio and motor dependant.

• GUIDE rate adjustable 5% to 50% of sidereal rate
• CENTRE rate adjustable 1.5x to 5x sidereal rate
• MOVE rate adjustable 5x to 50x sidereal rate
• TRACK rate adjustable in 0.005 arc seconds per second steps in any direction
• Coordinate display resolution 1 arc second (DEC), 1 second (RA)
• RTC clock setting typically better than 50ms by ear
• RTC calibration accuracy 0.03ppm
• RTC temperature coefficient 0.005ppm per degree C when handset powered
• Three USER RELAY outputs to control other equipment
• Standard CCD autoguider lead fits to drive box
• Override STOP input to the drive box
• Operating temperature range -10 deg C to +30 deg C

This system specification is for driving the Celestron motors fitted to the CI 700 mount. The drive box is the Universal Drivebox type. This is a simple plug in replacement for the existing electronic drives.

• Main telescope reduction 180 tooth precision worm wheels
• Step size from motor 1 arc second
• RA / DEC encoder resolution 16 arc seconds
• SLEW rate adjustable to a maximum of 58x sidereal rate (0.24 degrees per second) driving a CM 1100
• Minimum TRACK rate 0.04 arc seconds per second
• SYSTEM POWER requirement maximum 1 amp at 12 volt DC

This system uses AWR high power Microstep motors replacing the Celestron motors on the CI 700 mount. Timing belts are used to transfer the power from the motor to the slow motion shaft. The drive box is the Microstep Drivebox type. This is factory fitted and tested to provide state of the art performance.

• Main telescope reduction 180 tooth precision worm wheels
• Step size from motor 0.56 arc second
• RA / DEC encoder resolution 36 arc seconds
• SLEW rate adjustable to a maximum of 2 degrees per second driving a CM 1100
• Minimum TRACK rate 0.065 arc seconds per second
• SYSTEM POWER requirement maximum 3 amp at 12 volt DC