The 50 EMA is simply the exponential moving average of the last 50 periods. The timeframe does not matter, it is just the moving average of the last 50 candlestick’s prices, normally based upon the closing price. It is represented by a squiggly line on the chart that you can use to figure out what the average price was over the previous 50 candlesticks. It goes up in an uptrend, and down in a downtrend.