You can't. The last planet you can see with your naked eye is Uranus, and even then it's extremely difficult. I know many that would disagree with that statement, and I do agree that it takes an incredibly trained eye to observe, as well as a VERY dark sky, and the general knowledge of where you're supposed to look.
Neptune is too far away to be seen with your naked eye, which is in part why it was discovered and its existence confirmed until 1846. You can see it with a decent amateur telescope, however. The problem is, you have to know what you're looking for.
This is why many beginners in astronomy stick to observing to more noticeable planets -- generally no further than Saturn. If you're an amateur astronomer though, you might appreciate the challenge of spotting Neptune in your scope.
Neptune is too far away to be seen with your naked eye, which is in part why it was discovered and its existence confirmed until 1846. You can see it with a decent amateur telescope, however. The problem is, you have to know what you're looking for.
This is why many beginners in astronomy stick to observing to more noticeable planets -- generally no further than Saturn. If you're an amateur astronomer though, you might appreciate the challenge of spotting Neptune in your scope.
