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How will this eyepiece perform with 12-inch 3048 mm focal length SCT on Mars as it reaches opposition? Is the 2.5 mm focal length too much? — 1 Answer
by
John,
from IL, United States Asked on June 11, 2018
Answered by
Mark H.,
Gear Expert,
from IL, United States,
on September 11, 2018
A 2.5mm Nagler Type 6 would produce 1,219X Magnification in that scope!
We recommend no more that 60X/inch of aperture and no more than 350X regardless of aperture. A 9mm Nagler Type 6 would yield 338X but usage would come down to the seeing conditions and if the temperature of the is close to ambient inside the tube.
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