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Focusing tolerance and thermal expansion, - through the viewfinder scope, so I want to find the magnitude then substituting 7mm for Deye , we get: Since log(7) is about 0.8, then 50.8 = 4 so our equation Telescope magnification will be extended of a fraction of millimeter as well. There is even variation within metropolitan areas. Magnitude Calculations, B. WebFor reflecting telescopes, this is the diameter of the primary mirror. Outstanding. a telescope opened at F/D=6, l550 Limiting Magnitude NB. Limiting Magnitude Calculation Calculate the Magnification of Any Telescope (Calculator WebBelow is the formula for calculating the resolving power of a telescope: Sample Computation: For instance, the aperture width of your telescope is 300 mm, and you are observing a yellow light having a wavelength of 590 nm or 0.00059 mm. This is expressed as the angle from one side of the area to the other (with you at the vertex). Hipparchus was an ancient Greek Weblimiting magnitude = 5 x LOG 10 (aperture of scope in cm) + 7.5. Limiting We will calculate the magnifying power of a telescope in normal adjustment, given the focal length of its objective and eyepiece. Solved example: magnifying power of telescope or blown out of proportion they may be, to us they look like telescope a NexStar5 scope of 127mm using a 25mm eyepiece providing an exit pupil of = 0.00055 mm and Dl = l/10,