how can i calculate the minimum & maximum magnification of a telescope?
Palash asked:
how can i calculate the minimum & maximum magnification of a telescope? i need it to determine the distance of the nearest & the far object it can make a clear picture. with this information i can determine how much i can allow the lens to move. pls help.
I wanted to know what is the range of distance a specific telescope can focus clearly. ie. the distance of the nearest object it can focus & distance of the farest object it can focus. It’ll help me to calculate how much i should allow the lens to move.
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how can i calculate the minimum & maximum magnification of a telescope? i need it to determine the distance of the nearest & the far object it can make a clear picture. with this information i can determine how much i can allow the lens to move. pls help.
I wanted to know what is the range of distance a specific telescope can focus clearly. ie. the distance of the nearest object it can focus & distance of the farest object it can focus. It’ll help me to calculate how much i should allow the lens to move.
July 24th, 2009 at 6:47 pm
for a telescope ( astronomical type) , if fo snf fe are the focl length of objective and eyepiece,and D is the ditance of distinct vision,
then, the mgnification will be maximum M = fo / fe ( at far point)
and the minium magnification M = fo/fe( 1 + fe/D)
July 25th, 2009 at 9:07 pm
magnification=distance image/distance object
we measure them by experimentally in a dark room.possible:max=400times min=3 times aproxsimetly