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December the 1st : a distant supernova, as a bonus...

On the same night that we've been granted with the exceptional outburst of a quasar, an extragalactic supernova was also available in a well positioned galaxy, making two rare events visible at once !
And of course we also captured that one...

A supernova is the explosion of a high mass star : the process is so powerful that the dying star comes extremely bright for a few days, sometimes outshining the whole galaxy ! By late November, supernova SN2016iae shown up in NGC1532, a galaxy in Eridanus that produced several more supernovae in the past.

On the image below we can appreciate the tilted flat disk of the galaxy surrounding a bright nucleus : SN2016iae appears as a tiny star inmediately to its left (circled in the next image). Above the whole we can see also the small galaxy NGC1531. On that night the supernova was relatively faint (estimated magnitude 15.3), in principle requiring telescopes of 50cm in diameter, although the good local sky conditions allowed us to observe it effortless with a 40cm scope.

Incidentally, we can take advantage of such a "visit" to this pair of galaxies to appreciate some curious features, well shown in the close view below : NGC1532 (the main one) harbors two attached bright knots on the front edge of the disk (to the right side), while NGC1531 (the small one) actually appears to be made of two adjacent components...

Photo: Cristian Valenzuela/Observatorio del Pangue - December 1st, 2016.
Camera: Canon EOS 60D at prime focus of Meade LX200 16" f/6.3 ; Total exposure : 50 sec.