Quasar BTC40 J1429+011, Magnitude: 19.40, z=4.84 (missed it by that much!)

[Dennis]

Dennis, it's odd that the quasar is a 'ghost'. Did you find additional 'ghost' objects on the image too? Is the Aladin image also an IR band image? At least we know that the quasar hasn't moved  .

Would you have been able to get better sensitivity without the IR filter or would the light pollution have overwhelmed the quasar's signal?

Still a nice effort.

Phil S.

Hi Phil

I managed to track down an on-line professional observatory image DECaLS DR3 Colour of the region and it shows the Quasar.

When I overlay my image, my “ghost” Quasar is clearly offset but it does appear to match a fainter object on the Pro Image. So, my “Ghost” may not be an imaging or processing artefact after all, but it is not the desired Quasar.

Cheers

Dennis

DECaLS DR3 Colour ref Image
   

Quasar Circled
   

Dennis' Image
   

Comparison Overlay