I’m struggling to find high quality versions that don’t appear to be upscaled. Does anyone have any good source? I’ve been searching “OVNI El Escorial” and “OVNI chubut”, but I’m not having much success.

I’ve found this but in my opinion it’s upscaled and not the original.

I think you might have trouble finding anything that isn’t an upscaled version. However, it does provide a pretty good idea of what this object might have looked like to the naked eye.

Its an incredible capture, if legit.