craigg How does one be careful to not introduce a possible light leakage issue in the gasket space between the adjustment plate and the camera body during the adjustment process or after completion?
If you remove the tilt plate completely, you will notice that there is a circular "moat" in the plate around the sensor opening. There is a foam annulus insert in that moat that compresses to form a passable light seal. That moat is the crucial part; it allows the foam to compress into the plate. That being said, I have never looked at it carefully myself to see if it seals well enough for daytime use.
When you remove the tilt plate you will know which are the "push" screws and which are the "pull" screws.
The pull screws are the socket headed ones that pull the tilt plate towards the camera body, and are what ultimately hold the plate to the camera body. While the "push" screws are the grub screws. Loosen the pull, screw in the grub, and that creates a larger gap between the plate and the body. Similar to the push-pull action when you collimate Newtonian telescope mirrors.
The easiest way to adust is to not fiddle with all three screws at the same time.
First adjust the two screws that are aligned with the long axis of your sensor to get rid of the left-right tilt. Leave them alone after that, and adjust the remaining screw to get rid of top-bottom (short axis) tilt. Rinse and repeat, but each time only adjust the third screw after you've removed the long axis tilt.
If you try to fiddle with all three screws at the same time, you will go bonkers chasing your own tail.
No, you will not find this in ZWO's "documentation."
Chen
