Thames & Kosmos Scope Constructor handleiding
Handleiding
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Experiment 12
HERE’S HOW
. Hold the -R Concave lens tube close to
your eye. Hold the eyepiece tube with
your right hand.
. Slowly move the tube back and forth
with your left hand. A clear image will
appear.
. Now insert one of the aperture cards into
the telescope and observe its effect.
WHAT’S HAPPENING
This is a Galilean telescope. This means a convex lens is used as an
objective lens and a concave lens is used as an eyepiece. It was
invented in by Galileo Galilei. Its main advantage is that it
produces an upright image, but its main disadvantage is that its field
of vision gets smaller with increased power. The lens tube is used for
the first time in this experiment. It blocks out light and makes it easier
to keep the lenses in the right places. The closer the object being
viewed, the longer the tube needs to be. When the aperture is added,
it does not reduce the visual field. Although it becomes darker, only
the center of the lens is used, so it creates a very clear image.
Done!
Lens system
Objective lens: +300R Convex lens x1
Eyepiece lens: -40R Concave lens x1
-40mm
凹透鏡
+300mm
凸透鏡
-40mm
凹透鏡x2
+300R Convex lens
-40R Concave lens
Empty lens
frame
Optical tube
A
Optical tube B
小技巧：
1. 將40R凹鏡筒貼近眼睛，左手握住筒身。
2. 用右手手指慢慢地前後移動管子，就可以看到清楚的影像。
model 12
-40R Concave lens
(eyepiece lens)
+300R Convex lens (objective lens)
Distance
About 280mm
小技巧：
1. 將40R凹鏡筒貼近眼睛，左手握住筒身。
2. 用右手手指慢慢地前後移動管子，就可以看到清楚的影像。
model 12
Aperture Cards
20
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Productinformatie
| Merk | Thames & Kosmos |
| Model | Scope Constructor |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 44109 MB |
