Quote:
Originally Posted by lacad01
That's a stunning image 
Dumb question but how can you work out there's flexure? I can only make out some elongated stars toward the left edge, is that one of the symptoms  |
Yep. If there's some sag the camera sensor is tilted, so some parts are away from the focal plane. The elongation would be across the whole pic, but it is too small to notice on the right hand edge. It gradually gets worse as you move left and eventually becomes noticeable.
Geoff