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Listed below is technical information pertinent to the Celestron Star Hopper
Optical system
Aperture
Focal length
F/ratio
Ocular:
Apparent field
Magnification
Secondary mirror diameter:
Obstruction
Aluminized surface
Primary mirror
Highest useful power
Lowest useful power
Resolution: Rayleigh Criterion
Dawes Criterion
Field of view with standard eyepiece
Exit pupil with standard eyepiece
Light gathering power
Limiting visual magnitude
Optical tube length
Tube outer diameter
Focuser:
Focuser height (minimum)
Focuser travel
Focus (distance from tube edge)
Tube weight
Mount design
Mount weight
Shipping weight & dimensions
(given in inches)
TECHNICAL SPECIFICATIONS
®
Star Hopper
4.5
Item # 10400
Newtonian
4.5" (114mm)
910mm (35.8")
f/8
25mm SMA
52º
36x
1.25" or 7.7% by area
1.2"
Coated glass
270x
16x
1.21 arcseconds
1.01 arcseconds
1.4º
3.1mm
267x unaided eye
12.8
35"
5.5"
Rack and Pinion
3"
2"
4"
6 lbs.
Dobsonian hybrid
12 lbs.
35 lbs. (17x17x41)
22
®
4½, 6 and 8 telescopes.
®
Star Hopper
6
Star Hopper
Item # 10600
Item # 10800
Newtonian
Newtonian
6" (152mm)
8" (203mm)
1220mm (48")
1220mm (48")
f/8
f/6
25mm SMA
25mm SMA
52º
52º
49x
49x
1.5" or 6% by area
1.5" or 4% by area
1.5"
1.5"
Multicoated Pyrex
Multicoated Pyrex
360x
480x
22x
29x
0.91 arcseconds
0.68 arcseconds
0.76 arcseconds
0.57 arcseconds
1.1º
1.1º
3.1mm
4.1mm
474x unaided eye
843x unaided eye
13.4
14.0
52"
52"
8.50"
10.50"
Rack and Pinion
Rack and Pinion
3"
3"
2"
2"
3.5"
3.25"
18 lbs. 5 oz.
24 lbs. 14 oz.
Dobsonian hybrid
Dobsonian hybrid
21 lbs. 1 oz.
30 lbs. 6 oz.
24 lbs. (17x61x18)
30 lbs. (17x61x18)
31 lbs. (24x24x6)
41 lbs. (24x24x6)
®
8
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