BTC made correction so , is it right time to buy altcoin

Yes it seems good to buy the dip this time around as the chances of recovery and continuation of bull trend are high.
Also we have a positive sentiment in the market after a long time and when this happens the market remains occupied by bulls so im sure it will turn out well this way.
While bitcoin is in a price correction, this might be a good chance to accumulate more altcoins as chances are high that once bitcoin will be in bullish, altcoins will be affected too. Of course never invest on those altcoins that have low potentials because they will end up as dead coins and left with no value. Take those belong to top ten altcoins because their growth in value will surely be visible once altcoins season will come.