The three images:
(1) take a relatively short exposure of a bright star field. This will make it possible to measure the exact properties of the optical train exactly as used with a plate solve. The data from this allows scaling of images.
(2) With the mount purposely misaligned to the polar axis, turn off PEC and Starlock off, take a 30 minute image in the exact configuration of (1). This will produce a complete image of several worm revolutions in the star trails.
(3) repeat (2) with PEC turned on.
Now let me ask a dumb set of questions.
- Are not the PE plots I generated sufficient for understanding PE error? Is there something wrong with Jason's plots? The current plots look very good.
- What will a picture of the misaligned starfield tell us that a plot will not?
- If I take a 10 minute picture of a star field with everything aligned and operational, and the stars look perfect, isn't this sufficient? Same with a 20 minute picture. We can take all those pictures you mention, however if the image looks wonderful using the LX850 fully operational does it matter if I take a misaligned picture? Isn't this the crux of the issue, that we can take a 10 minute picture using the LX850 system (mount, OTA, and Starlock?) and they look wonderful?
Will I ever use the LX850 mount without Starlock? Highly unlikely. Kind of defeats the purpose of getting the LX850.