36
A
A
P
P
P
P
E
E
N
N
D
D
I
I
X
X
A
A
-
-
T
T
E
E
C
C
H
H
N
N
I
I
C
C
A
A
L
L
S
S
P
P
E
E
C
C
I
I
F
F
I
I
C
C
A
A
T
T
I
I
O
O
N
N
S
S
O
O
Op
p
pt
t
ti
i
ic
c
ca
a
al
l
l
S
S
Sp
p
pe
e
ec
c
ci
i
if
f
fi
i
ic
c
ca
a
at
t
ti
i
io
o
on
n
n
NexStar 60mm
NexStar 80mm
NexStar 114mm
Design Refractor
Refractor
Reflector
Aperture 60mm
80mm
114mm
Focal Length
700mm
400mm
1000mm
F/ratio of the Optical System
12
5
9
Objective Coatings
Multi Coated
Multi Coated
Aluminum
Highest Useful Magnification
175x ( ~ 4mm eyepiece)
189x (~2.5mm eyepiece)
269x (~4mm eyepiece)
Lowest Useful Magnification
20x ( ~ 32mm eyepiece)
11x (~40mm eyepiece)
16x (~55mm eyepiece)
Resolution: Rayleigh Criterion
Dawes Limit
2.31 arc seconds
1.93 arc seconds
1.73 arc seconds
1.45 arc seconds
1.21 arc seconds
1.02 arc seconds
Light Gathering Power
73x unaided eye
131x unaided eye
265x unaided eye
Field of View: Standard Eyepiece
1.43º
3.25º
1.3º
Linear Field of View (at 1000 yds)
55 feet
131 feet
68 feet
Eyepiece Magnification:
35x (20mm)
70x (10mm)
175x (4mm)
16x (25mm)
40x (10mm)
40x (25mm)
100x (10mm)
Optical Tube Length
28 inches
15.5 inches
18 inches
E
E
El
l
le
e
ec
c
ct
t
tr
r
ro
o
on
n
ni
i
ic
c
c
S
S
Sp
p
pe
e
ec
c
ci
i
if
f
fi
i
ic
c
ca
a
at
t
ti
i
io
o
on
n
ns
s
s
(
(
(f
f
fo
o
or
r
r
N
N
Ne
e
ex
x
xS
S
St
t
ta
a
ar
r
r
G
G
GT
T
T
M
M
Mo
o
od
d
de
e
el
l
ls
s
s)
)
)
Input Voltage
Maximum
Minimum
12 V DC Nominal
18 V DC Max.
8 V DC Min.
Batteries Required
8 AA Alkaline
Power Supply Requirements
12 VDC-750 mA (Tip positive)
M
M
Me
e
ec
c
ch
h
ha
a
an
n
ni
i
ic
c
ca
a
al
l
l
S
S
Sp
p
pe
e
ec
c
ci
i
if
f
fi
i
ic
c
ca
a
at
t
ti
i
io
o
on
n
ns
s
s
(
(
(f
f
fo
o
or
r
r
N
N
Ne
e
ex
x
xS
S
St
t
ta
a
ar
r
r
G
G
GT
T
T
M
M
Mo
o
od
d
de
e
el
l
ls
s
s)
)
)
Motor: Type
Resolution
DC Servo motors with encoders, both axes
.26 arc sec
Slew speeds
Nine slew speeds: 4º /sec, 2º /sec, 1º/sec, .5 /sec, 32x, 16x, 8x, 4x, 2x
Hand Control
Double line, 16 character Liquid Crystal Display
19 fiber optic backlit LED buttons
Fork Arm
Cast aluminum
S
S
So
o
of
f
ft
t
tw
w
wa
a
ar
r
re
e
e
S
S
Sp
p
pe
e
ec
c
ci
i
if
f
fi
i
ic
c
ca
a
at
t
ti
i
io
o
on
n
ns
s
s
(
(
(f
f
fo
o
or
r
r
N
N
Ne
e
ex
x
xS
S
St
t
ta
a
ar
r
r
G
G
GT
T
T
M
M
Mo
o
od
d
de
e
el
l
ls
s
s)
)
)
Software Precision
16 bit, 20 arc sec. calculations
Ports
RS-232 communication port on hand control
Tracking Rates
Sidereal, Solar, Lunar and King
Tracking Modes
Alt-Az, EQ North & EQ South
Alignment Procedures
AutoAlign, 2-Star Alignment
Database
25 user defined programmable object.
Enhanced information on over 100 objects
Total Object Database
4,033 Objects