25
PowerSeeker Specifications
21008
21039
21041
21036
21044
PS 40AZ
PS 50AZ
PS 60AZ
PS 70AZ
PS 76AZ
Optical Design
Refractor
Refractor Refractor
Refractor Newtonian
Aperture
40mm (1.6")
50mm (2.0")
60mm (2.4")
70mm (2.8")
76mm (3.0")
Focal Length
500mm
600mm
700mm
700mm
700mm
Focal Ratio
f/12
f/12
f/12
f/10
f/9
Optical Coatings
fully coated
fully coated
fully coated
fully coated
fully coated
Finderscope 2x20
5x24
5x24
5x24
5x24
Diagonal
Star Diagonal
0.96"
Star Diagonal
0.96"
Erect Image
1.25"
Erect Image
1.25"
n/a
Eyepieces
20mm .96"
(25x)
20mm .96"
(30x)
20mm 1.25"
(35x)
20mm 1.25"
(35x)
20mm 1.25" Erect
Image (35x)
8mm .96" (63x)
12mm .96" (50x)
n/a
n/a
n/a
4mm .96"
(150x)
4mm 1.25"
(175x)
4mm 1.25"
(175x)
4mm 1.25"
(175x)
Apparent FOV
20mm @ 32
°
20mm @ 32
°
20mm @ 50
°
20mm @ 50
°
20mm @ 50
°
8mm @ 30
°
4mm @ 30
°
4mm @ 40
°
4mm @ 40
°
4mm @ 40
°
Erecting Eyepiece 1.5x w/20mm
38x
45x
n/a
n/a
n/a
Barlow Lens - 3x (2x for 40AZ)
0.96"
0.96"
1.25"
1.25"
1.25"
w/20mm
(50x)
w/20mm
(90x)
w/20mm
(105x)
w/20mm
(105x)
w/20mm
(105x)
w/8mm
(125x)
w/12mm
(150x)
n/a n/a
n/a
w/4mm (450x)
w/4mm (525x)
w/4mm (525x)
w/4mm (525x)
Angular Field of View w/20mm eyepiece
1.3
°
1.7° 1.4°
1.4
°
1.4°
Linear FOV w/20mm eyepiece -ft@1000yds
67
89
74
74
74
Mount Altazimuth
Altazimuth
Altazimuth Altazimuth
Altazimuth
Altitude Locking Knob
yes
yes
yes
yes
yes
Azimuth Lock
no
no
yes
yes
yes
CD-ROM "The SkyX" Level 1
yes
yes
yes
yes
yes
Highest Useful Magnification 100x
120x
142x
165x
180x
Limiting Stellar Magnitude
10.8
11.1
11.4
11.7
11.9
Resolution -- Raleigh (arc seconds)
3.05
2.66
2.31
1.98
1.82
Resolution -- Dawes Limit " "
2.85
2.28
1.93
1.66
1.53
Light Gathering Power
33x
51x
73x
100x
118x
Optical Tube Length
18" (46cm)
22" (56cm)
28" (71cm)
30" (76cm)
26" (66cm)
Telescope Weight - Optical Tube
0.8# (0.4kg)
1.5# (0.7kg)
2.0# (0.9kg)
6# (2.7kg)
8.5# (3.9kg)
Note: Specifications are subject to change without notice or obligation