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Reload this Page Can someone astrosmart please work this out?
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Old 10-04-2014, 05:02 PM
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Varangian (John)
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Join Date: Feb 2012
Location: Melbourne
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Can someone astrosmart please work this out?
Am I going to have a larger FOV using an 18mm 82 degree eyepiece @ 84x when compared to a 14mm 100 degree eyepiece @ 108x

Thank you.
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Old 10-04-2014, 05:09 PM
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mental4astro (Alexander)
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Divide the AFOV by the respective magnification. That will give you the true FOV .

By the values you give, the difference is small, 0.926º for the 14mm & 0.976º for the 18mm.
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