Çıplak gözle görülebildi. - It could be seen by the naked eye.
Yıldızları çıplak gözle, hatta daha da iyisi teleskopla görebilirsin. - You can see the stars with your naked eye, and even better through a telescope.
Английский Язык - Английский Язык
Определение the naked eye в Английский Язык Английский Язык словарь
the eye unaided by any optical instrument that alters the power of vision or alters the apparent size or distance of objects; "it is not safe to look directly at the sun with the naked eye