![]() ![]() ![]() So, a 400 mm telescope with a 10 mm eyepiece magnifies 40 times.Īperture directly affects brightness and detail. Divide your eyepiece into your focal length for magnification. The things to keep in mind are:įocal length directly affects magnification. I wrote a separate blog post about what to consider when buying a telescope. Many of these smaller scopes had modest focal lengths in the 250 mm - 450 mm range, compared to the Nextstar 8SE’s 2032 mm. The Nexstar 8SE has an 8” (203 mm) aperture. Bigger must be better for astrophotography, right? Well, I think I was surprised to learn that most photos I viewed were taken with relatively small (80 mm - 100 mm aperture) telescopes. So, I think my biggest misconception about astrophotography was that all of those amazing internet photos were taken with giant telescopes. ![]()
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