sentences:  The discovery was made using a Celestron Schmidt–Cassegrain telescope working at f/2.1 with a QHY9 CCD camera.On 7 September 2013, Lovejoy discovered comet C/2013 R1 (Lovejoy) which became visible to the naked eye in November 2013.On 17 August 2014, Lovejoy discovered comet C/2014 Q2 (Lovejoy) in the constellation Puppis.