Accessory for defining the tilt of your camera to compensate for blurring caused by tilting in the instrument setup.
Do you have a camera with a large chip or a DSLR camera and your images are always blurred in one part of the image? When taking pictures of the sun with your H-alpha filter, do you get ugly Newton rings in the image field? The cause is usually a crooked chip. The CTU (Camera Tilting Unit or tilt flange) is the solution!
The CTU allows extremely sensitive adjustment: Tilt adaptors usually use three pairs of pull/push screws at an angle of 120°. These screws are much too coarse and do not allow for sensitive adjustment! In these designs, most of the adjustment is achieved by the elastic or even plastic deformation of the components, which means that sensitive and reproducible adjustment is not possible.
The heart of the CTU, on the other hand, consists of three screws that press radially onto a conical surface. These three screws allow the tilt of the camera to be adjusted very precisely and reproducibly. One turn increases the distance by 0.2 mm. The total travel is only 1 mm. Three sets of disc springs hold the camera securely in position.
The tilt can be adjusted from the outside at any time without having to remove the camera from the telescope.
We offer the CTU accessory in the following sizes
- CTU M48: Has the familiar M48x0.75 connection thread on both sides and is suitable for cameras with small to medium-sized sensors.
- CTU XL 2.7" AP: Has the 2.7" Astro-Physics connection thread on both sides and is designed for cameras with large sensors. Includes adaptor with continuous 2.7" AP bolt thread.
- CTU XL M68x1: Has M68x1 threads on both sides and is designed for cameras with large sensors. Includes adaptor with continuous M68x1 bolt thread.
- CTU Canon EOS / M48: Has a Canon EOS bayonet mount for lenses on one side and an M48x0.75 thread on the camera side. The CTU has a thickness of 20 mm with the bayonet mount; with the optional adaptor to T2, a residual light path of 23 mm remains to the Canon flange focal distance of 44.0 mm.
- CTU Nikon / M48: Has a Nikon bayonet mount for lenses on one side and an M48x0.75 thread on the camera side. The CTU has a thickness of 21.5 mm with the bayonet mount; with the optional adapter to T2, a residual light path of 25 mm remains to the Nikon flange focal distance of 46.5 mm.
