1. The problem statement, all variables and given/known data I have the following variables: f = .93 m f(e) (eyepiece) = .0082 m distance toJupiter pj = 588 E^9 diameter of Jupiter dj = 139822 E^3 Find the height of the image of Jupiter created by the objective lens of a telescope. 2. Relevant equations M = -q/p q = f Where M is the magnification, q is the image location, and p is the object location. 3. The attempt at a solution This seems like a straight forward problem: find the magnification, multiply by the original diameter, and done: M = -f / pj dj2 = dj * f / pj = 139822 E^3 * .93 / 588 E^9 = 2.21 E^-4 According to my homework, this is incorrect and the correct answer is 2.07 E^-4 My answer is so close I figure I must be approximating something I shouldn't, but I can't figure out where I'm going wrong here.