Question

A 5-inch, f/6 telescope has a 2-inch eyepiece focal. Its magnifying power is:

Answer 1

\[M = \left| \frac{ h \prime }{ h _{0} } \right| = - \frac{ i }{ p }\]
and use \[\frac{ 1 }{ f } = \frac{ 1 }{ i } + \frac{ 1 }{ p }\]

Answer 2

http://www.celestron.com/support/knowledgebase?article=http%3A%2F%2Fwww.celestron.com%2Fc3%2Fsupport3%2Findex.php%3F_m%3Dknowledgebase%26_a%3Dviewarticle%26kbarticleid%3D1737%26group%3Diframe&title=How+do+you+determine+a+telescope%27s+magnification%3F