9
using the sYnc Function
While observing we notice most of the objects are off toward
the same edge of the field of view when we zero the
FIND
display. Probably we bumped the telescope base or were off a
little when we sighted a star. We can have Sky Wizard slightly
adjust the alignment by simply centering the last object we
located with
FIND, then press MODE and select SYNC, then
press ENTER. The next object should then be more accurately
centered.
If
SYNC makes things worse, you may have been aiming at
the wrong object. Just turn off Sky Wizard and align again
from scratch.
4. specifications
Dimensions
2.4" x 3.8" x 1.0"
Weight
4 ounces including 9v battery
Temperature Range
-10°C to +50°C
Telescope types
Equatorial, Altitude/Azimuth
(Dobsonian)
Display
Light-emitting diode (LED), red
color, 8-character alphanumeric
Display Dimming
4-step pushbutton dimming 10:1
from full bright to full dimmed
Display Resolution
1m right ascension, 10' declination
0.1° in guide mode
Display Modes
SETUP function, alignment mode
that uses short star list
RA DEC function, right ascension
and declination
CATALOG, complete database of
celestial objects from 3 sources
FIND function, displays steering
coordinates to object
SYNC function, alignment mode
that uses complete catalog
INSTALL telescope installation
ENC TEST function, shows
encoder angles
Database
Complete list of 110 Messier objects,
including galaxies and galaxy
clusters, planetary nebulas, globular
clusters, open clusters.
Planets (8)
Alignment star list of 28 bright
navigational stars
Equatorial Setup
Based on two star sightings, polar
alignment not required. Declination
must initially be set to Dec=0.
Latitude, longitude, date, and time not
required.
Alt/Azimuth Setup
Requires two star alignment and
orthogonal positioning of encoder
axes. No input for latitude, longitude,
date, or time required.
User Catalog
Retained without electrical power in
nonvolatile memory
Customization
Retained without electrical power in
nonvolatile memory
Coordinate Epoch
AD 2000
Sensing Method
Optical encoders, quadrature
Encoder Resolution
Standard resolution 2160-step, 0.17°
encoders
High-resolution 4000-step, 0.09°
encoders
Encoder gearing
Any ratio between 1:1 to 1:4 for high
resolution
Any ratio between 1:1 to 1:8 for low
resolution
Angle representation
16 bits
Vector representation
48 bits
Sidereal Clock accuracy 0.05%
Stopwatch accuracy 0.05%
Power Requirements
5.1 to 12 volts DC
16 mA, display fully dimmed, typical
47 mA, display maximum brightness,
typical
Reverse polarity protected
Battery Recommended
9-volt alkaline batterymay be
operated on external 12-volt DC
power supply
Battery Life
30 hours with display fully dimmed
Encoder Dimensional Drawings:
Standard (2160 step) encoder
High Resolution (4000 step) encoder
