About the StarGPS NX Package - ASTAR...
GPS-ASTAR - Meade Autostar/Audiostar (ETX/LXD/LX90/LX80/LT)
Add GPS to your telescope! The new 65-channel Star GPS receiver works with the Astro-Physics GTO, Celestron NexStar, Losmandy Gemini, Meade 497/497EP Autostar, Audiostar, LX200 Classic, LX200GPS, LX200ACF, RCX400, Orion Atlas/Sirius GoTo, Sky-Watcher SynScan, Vixen StarBook and StarBook Type-S.
Imagine if your telescope could access the Global Positioning System so that it always knew when and where you were observing from. No more checking your watch, looking up site coordinates or fiddling with the keypad to enter the date, time, latitude and longitude. StarGPS uses a single cable to connect your telescope to the GPS receiver and automatically input these values... making your telescope setup much easier and more precise!
StarGPS NX Package - ASTAR Features...
- Fast time-to-first-fix and low power consumption
- High performance 65-channel SkyTraq chipset
- Supports standard NMEA-0183, Meade LX200, Celestron NexStar, Synta Binary and Vixen HTTP protocols
- Automatically detects telescope type (Meade, Celestron, Synta, Vixen or none)
- Switches to standard 9600 baud NMEA output after 45 seconds if no telescope is detected
- Lithium cell sustains internal clock and memory (recharges during normal operation)
- LED power indicator blinks to indicate receiver status
- Automatic cold start with no user initialization required
- Compact design with integrated antenna/receiver
- One-year warranty (parts & labor)
StarGPS NX Package - ASTAR Specifications...
Size: 39 x 45 x 16 mm (1.5" x 1.8" x 0.6")
Weight: 60 g (2.1 oz)
65-channel (-159 dBm sensitivity)
Warm start in 35 seconds, cold start in 42 seconds
Update rate: 1 second (default), adjustable*
Position accuracy: 2.5 meters CEP
Velocity: 0.1 meters/second
Time: +/- 100 nanosecond synchronized to GPS time
Altitude: 18,000 meters (60,000 feet) max
Velocity: 515 meters/second (1000 knots) max
Acceleration: 4 G, max
Interface: RS-232 with 1.5 m (60") cable (PS/2 Female)
Baud rate: 9600 (default), 4800, 19200, 38400*
NMEA-0183 Version 3.01 ASCII output: GPGGA, GPGSA, GPGSV, GPRMC, GPVTG
Meade LX200 Command Set
Celestron NexStar Communication Protocol (requires hand control firmware version 2.3, 104.0 or 4.0+)
Synta Binary Protocol (requires hand control firmware version 3.10+)
Vixen HTTP Protocol (requires firmware version 1.2 build 31 or newer)
User selectable NMEA sentences also include: GPGLL, GPZDA*
Power: 3.6 to 5.5 V @ 45 mA tracking, 80 mA acquisition
Backup power: 3V rechargeable lithium cell (350 hours)
Operating temperature: -40 to +85C (-40 to +185F)
Relative humidity: 5% to 95% non-condensingStarGPS Product Number: 1040