ASTRO-PHYSICS 400GTO Manual de instruções de montagem - Página 3

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400GTO GERMAN EQUATORIAL MOUNT WITH

MODEL 400GTO PARTS LIST

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400 Equatorial Head with Servo Drive Motors
1
Stainless counterweight shaft with washer stop and black plastic knob (5/16-18 threaded rod)
1
GTO Control Box (Model GTOCP2) and Carrying Bag
1
GTO Keypad Controller with 15' Coiled Cable
1
D.C. power cord (cigarette lighter adapter) – 8' long
1
"Y" cable (goes to RA and Dec motors) with extension cable (attaches to the GTO Control Box)
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Black plastic knobs with 1/4-20 threaded rod
1
5 and 10mm hex keys
2
Red Caplugs
1
DigitalSky Voice
In order to fully assemble and use your mount, you will need the following items sold separately: mounting plate, pier or
tripod, portable rechargeable battery pack and counterweights. Several sizes and types are available for your selection.
Many of these items will be discussed throughout these instructions. Several additional options are available:
Santa Barbara Instrument Group CCD imaging cameras and ST-4 Autoguider - if you plan to pursue CCD imaging or
astrophotography
Mounted encoders - you will need these if you plan to use digital setting circles. Keep in mind that these 4000 step
encoders which read the position of the shaft are very coarse (324 arc seconds) while the encoders that are
built into the servo motor itself is 0.05 arc seconds.
JMI Digital setting circles - The go-to keypad will perform most of the functions of the digital setting circles. One
advantage of the JMI unit is the ability to move the telescope by hand while the unit displays your position.

FEATURES AND SPECIFICATIONS

RA/Dec Worm wheel
RA/Dec Worm gear
RA/Dec shafts
Counterweight shaft
Latitude range
Azimuth adjustment
Setting circles
Right ascension
Declination
Motors
Power Consumption
Power requirements
Capacity
Weight of equatorial head
ASTRO-PHYSICS
SERVO MOTOR DRIVE
Software (CD-ROM)
3" (7.6 cm), 192 teeth, fine-pitched bronze wheel
Stainless steel
2.5" hollow shafts
1.125" diameter stainless steel, removable
10 to 64 degrees
Approximately 25 degrees
Porter Slip Ring design
10 minute increments, pointer engraved both Northern/Southern
1 degree increments, pointer
Zero-cogging servo motors
0.3 amps at sidereal rate, 1.2 amps with both motors slewing
12 VDC
Will accommodate refractors up to 5", reflectors to 6", Cassegrains to 8"
21 lbs. (9.5 kg)
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