Specifications - Orion HDX110 Instruction Manual

To LOOSEN the mesh (INCREASE the backlash), first
loosen the outer two screws a little bit by turning them
counterclockwise the same amount, then tighten the
center screw by turning it clockwise.
Loosen/Tighten the three screws only in small incre-
ments to avoid over-adjustment or possible damage
to the worm or ring gear!
10. Now, with the DEC clutch lock lever tightened, jog the
saddle rotationally back and forth again by hand and see
if the backlash has decreased to a more desirable level.
11. After the gear mesh has been adjusted to your
satisfaction, re-install the three cover screws removed in
Step 8, and then re-tighten the four screws on the bottom
of the worm gear housing loosened in Step 7.
12. Before retightening the two screws loosened in Step 6,
use the hand controller's up or down directional button
to drive the DEC motor and the worm gear for a few
seconds. This will allow the motor to auto-center and
align the drive shaft with the worm rod. After this is done,
the two screws can be fully tightened.
13. Now use the hand controller to slew the DEC axis
at least 2 complete cycles (720 degrees) to check if
there is any stalling or binding as a result of your mesh
adjustment. If there is, be sure to repeat this procedure
from the top and make the necessary adjustments. If
there isn't, re-attach the DEC motor housing with the
three screws removed in Step 5.

specifications

Product name
Mount type
Payload (counterwts. excl.) 110 lbs. (50kg), depending on
Saddle type
R.A. worm wheel
Dec. worm wheel
RA shaft
Dec. shaft
Motors
Transmission
14
HDX110 EQ-G
German equatorial GoTo
telescope length
Wide (Losmandy style)
Dia. 219.5mm, 435 teeth,
aluminum
Dia. 219.5mm, 435 teeth,
aluminum
Dia. 55mm, aluminum
Dia. 55mm, aluminum
0.9° hybrid stepper motors
435:1 worm drive + 64
microstep/0.9° stepper motor
drive
Resolution
Tracking accuracy
Maximum slewing speed
Tracking rates
Autoguiding speeds
PEC
Latitude adjustment range
Azimuth adjustment range
Counterweight shaft
Counterweight
Tripod pier
Tripod leg diameter
Tripod min. folded length
Tripod leveler pads
Polar alignment
Polar axis scope
Hand controller
Database
Celestial object catalogs
Pointing accuracy
GoTo alignment
Resolution of aux. encoders 17,624 Counts/rev., approx. 1.2
Weight of EQ head
(excl. Counterweight shaft) 55 lbs. (25kg)
Weight of Tripod Pier
Case for EQ head
Power requirement
Power cable
RS-232 cable
11136000 counts/rev; approx
0.12 arc-second
typically ±3 arc-seconds (native)
3.3° /s
Sidereal, solar, lunar
0.125x, 0.25x, 0.5x, 0.75x, 1x
100 segments permanent PEC
10° – 65°
±10°
Dia. 31.5mm, length 15.9"
(403mm), weight 5.7 lbs. (2.6kg)
22 lbs. (10kg) each (x2)
Height range 31.1"-43.3" (790-
1100mm)
2.4" (60.5mm)
32.5" (82.6cm)
Qty 3, all metal, height range
2.7"-3.7" (69-94mm)
Software assisted (iterative) or
optional polar scope
Optional, external mounting
SynScan, illuminated keypad
42,000+ objects
Messier, NGC, IC, SAO,
Caldwell, Double Star, Variable
star, Named stars, Planets
Up to 5 arc-min (RMS)
1-star, 2-star, 3-star
arc-minutes
63 lbs. (28.6kg)
Dimensions: 19.5"x23.5"x25.5",
incl. casters
11-16V DC, 4A
12V DC cigarette lighter style
with threaded connector to
mount
Included