How many typical stars can supernova be luminous as?

Kemble's cascade. It was named by in honour of Father Lucian Kemble (1922–1999), a Fran­cis­can friar and amateur as­tronomer who wrote a letter to Houston about the as­ter­is­m, de­scrib­ing it as "a beau­ti­ful cascade of faint stars tumbling from the north­west down to the open cluster NGC 1502" that he had dis­cov­ered while sweeping the sky with a pair of 7×35 binoc­u­lars

North. The entire ce­les­tial sphere seems to rotate slowly around the North-­South axis of Earth's ro­ta­tion. So the camera must have been pointed North or South, de­pend­ing on the hemi­sphere the photo was taken at. But the bright star in the center must be Polaris, as the south ce­les­tial pole cur­rent­ly lacks a bright star to mark its po­si­tion.

Neutron star. A neutron star is a stellar remnant of a su­per­no­va. Neutron stars are very small, but ex­treme­ly dense - with a radius of only about 12–13 km (7 mi), they can have a mass of about two Suns.

Quasars. A quasar is an ex­treme­ly en­er­get­ic source of ra­di­a­tion powered by ac­cre­tion disc around galaxy's central su­per­mas­sive black hole. Quasars were much more common in the early uni­verse, as all known quasars are ex­treme­ly distant.