Man you shouldnt even bother talking about nibiru on ats,,,judging bye their comments there are some very UN well read people on here,,, no one knows
for a fact if it exists or not,,,so if anyone says its not real then they are ignorant,,unless they say "in my opinion" its not real
It is, indeed a telescope artifact. In a normal camera it's called lense flare. Most professional telescopes don't have lenses, but they can still
pick up a stray reflection if something bright is shining into the tube from off axis.
In this case, if you zoom-out you'll find that Sirius (the brightest star in the sky) is nearby at about the 7-o'clock position: