Model name: HE02
4 inch Refractor telescope
with hand grip
Ergonomics
designed telescope 2nd version.
This is the 4 " (100 mm)
refractor telescope which can be hold with your hands even during observation.
By using 2 mirrors between
Objective lens and eye piece ,it is very comfortable to look in the eye
piece .
Enough optical performance
at any magnification .In low power you can get clear image without coma
.
In high power (around
80 times) you can see the splendid views of the Moon craters ,Belts of
the Jupiter and the ring of the Saturn .
At High magnification
you should better to set this telescope on the camera tripod using the
screw on the bottom .
SPEC
D
= 4 inch (100 mm) f=25 inch (640 mm)
Folding
refractor using 1 achromatic objective lens and 2 flat surface mirrors
Draw
tube with hericoid for 1.25" eyepiece
Hand
grips ,instant finder ,0.25" size Screw hole for tripod
mass
3.0 kg (without ocular)
Optical layout of this telescope
Using 2 flat surface mirrors between
the objective lens and the eye lens , it is no use to bent your neck
so hard and to hold the scope too high .The size of the mirror 1 is 70
mm and mirror 2 is 42 mm .Both of them are for newtonian reflector originally
.
Main flame of this scope is consist
of 4 aluminum angles . The Coverings are made of FRP .
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