What I am questioning is his qualifications and ability to accurately eliminate potential sources of the "object" in his images. Based on what I see with the comments he made about his Hale-Bopp image, I am not sure he really is that much of an expert. Without more details of his image sequence/equipment, it is difficult to draw any conclusions. However, I am not about to take his word for it that he has shown that it was something in the sky and not in his computer or imaging system.