M42 - Orion nebula (mosaic)

Wow!

Why do people always list the total accumulation of all panels? When we look at an image, we don't initially know it's made from panels, and the first thing we see is the total number of hours. We think, "Wow, this (before zooming in) can only be achieved with 40 hours, unfortunately." Then we look closer and find out it's actually 4 panels of 10 hours each. That creates mixed feelings. I understand that accumulating 40 hours deserves respect, but that's secondary and belongs in the description. The image, no matter how you look at it, is effectively 10 hours in terms of signal, not labor hours. I know you list the number of frames, but the field is called "exposure," and you can't simply add up the exposure times of panels.