aden harili agnes septiani alvia hamulatsari anindhita harwati anton wahyono
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Aden Harili
Agnes Septiani
Alvia Hamulatsari
Anindhita Harwati
Anton Wahyono
Presentation Proposal Telescope Star
The materials to make telescope :
1. Timber
2. Carton
3. Lens
4. Nail
5. Glue
6. Pack suttle cock
How to make telescope :1. Cut 3 timbers with the long 120 cm.
2. Arranged the 3 timbers for buffer the telescope.
3. Stick the carton to pack suttle cock agree with focus (Fob + Fok).
4. Cut the carton.5. Stick on the timber.
6. Enter telescope in the stick.7. Pair the lens in telescope.
Objective Lens :Distance shadow : 20 cm
Distance object : 18 cm
Diameter : 5 cm
Okuler Lens :Distance shadow : 50 cm
Distance object : 73 cm
Diameter : 5 cm
Look for Objective Lens1/f = 1/s + 1/s’
= 1/18 + 1/20
= 10/180 + 9/180
= 19/180
F = 180/19
= 9,47
Look for Okuler Lens1/f = 1/s + 1/s’
= 1/73 + 1/50= 50/3650 + 73/3650= 123/3650
F = 3650/123= 29,674
D = Lob + Lok
= 9,47 + 29,674
= 39,144
….Thank you for your attention, I hope that useful for us….
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