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TELESCOPES & ACCESSORIES
Having more than 20 years of experience in the field of optics, we can provide telescopes having excellent performance. We have complete in-house manufacturing facilities for all the optical and mechanical components. All the coatings are done on our Leybold coating machine. We have complete facilities for designing of the Objectives and Eyepieces using computer aided lens designing software.
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Telescopes formula
The most common used telescope formula are as follows :
D - Diameter of objective
FO - Focal length of objective
FE - Focal length of Eyepiece
M - Magnification
 
Magnification : This is the magnification of the complete system and depends only on the focal lengths of the objective and eyepiece. For the same objective, the magnification will increase with decrease in focal length of eyepiece. For the same eyepiece, magnification increases as objectives of larger focal lengths are used.
 
M = FO/FE
 
Exit pupil : This is the diameter of the rays that come out of the eyepiece. It depends on the diameter of the objective and the magnification. Exit Pupil = D/M
 
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