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Mercury is in the western sky about 30 minutes after sunset. Mercury moves from the constellation of Gemini and is usually Mercury is in the constellation of Gemini shining at magnitude 0.5 on the 16th. Quick tutorial on the magnitude scale is an inverse of how longer in the magnitude scale. We need to have the magnitude in three. The apparent brightness of the object increases by a factor of about 2.5. The dimness object that the human eye can see under optimal conditions is about 6th magnitude. So any magnitude greater than 6th, you will definitely need to put an octal or a telescope to spot any magnitude less than 6th. You should be able to spot what you make it up. But quite those telescopes and monoculars towards those right.