- #1
willingtolearn
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I am plan on building a small refractor telescope about 20 cm long, i need your guys help !
1. What len is use for Objective len and what len is use for Eyepiece len ? (how is it look like)
2. How far should i place objective len and eyepiece len apart ?
3. If i make a 20 cm long refractor telescope, what is the diameter should the objective len and eyepiece len should be ?
Thanks
1. What len is use for Objective len and what len is use for Eyepiece len ? (how is it look like)
2. How far should i place objective len and eyepiece len apart ?
3. If i make a 20 cm long refractor telescope, what is the diameter should the objective len and eyepiece len should be ?
Thanks