Tilter T2 ZWO

It facilitates precise configuration of the camera's focal plane and sensor position for astrophotography.

There's a problem many astrophotographers are familiar with: despite adjusting the focus as best as possible, there are always one or two corners that appear blurry. Ultimately, it comes down to a choice between tweaking the focus settings until the stars appear relatively uniformly sharp, or simply cropping the edges of the image afterward.

These are the possible causes:

• a slight displacement of the camera sensor (a few fractions of a millimeter are more than enough),
• the tilting of the eyepiece holder,
• a slight displacement of the focal plane (something very common in Newtonian telescopes),
• the wobble at the fitting flange at the eyepiece end.

The solution: The tilt flange allows you to adapt the camera sensor to the telescope's focal plane, regardless of the cause of the tilt. You only need to maintain the orientation of the assembly consisting of adapters, correctors, and camera.

Here's how it works: the simplest way is to perform a single calibration using test captures, identify the "bad corner," and adjust the tilt flange; to do this:

• Loosen the lock screws.
• Adjust the screws in the orientation where you have detected the deterioration in image quality.
• Take another test photo, and if you see any imperfections, it means you've adjusted in the wrong direction, so you'll have to repeat the process in the opposite direction until the image improves.
• Once you get satisfactory results, tighten the counterscrews again and you're done!

Incidentally, this procedure will also allow you to eliminate the annoying Newton's rings in the captures in H-Alpha light of the Sun.