About this product
Part Number: 10105100
Neumann Camera Tilting Unit (CTU)
As the chips of modern CCD/CMOS cameras get larger and larger it becomes more difficult to align them perfect perpendicular to the optical axis and parallel to the focal plane. Sometimes the sensor is not mounted accurately in the camera housing and this can result in uneven sharpness and focus from one side of the sensor to the other, even though it may appear that you have mounted the camera properly. Here is where the Neumann CTU will help.
The Neumann CTU allows you to adjust the tilt of the focal plane very easily and very precisely. Similar units from other manufacturers have three pairs of push-pull screws at 120° and can be very difficult to adjust. Push/Pull screws can be too coarse and a lot of adjustment is done via elastic or even plastic deformation of the main body to achieve the required image plane movements.
In contrast, at the heart of the Neumann CTU are three radial screws with a very light cone shape formed at one end. By screwing these cones in, the two parts of the Neumann CTU are separated by a very small amount. A whole turn of a screw corresponds to a separation of only 0.2mm. Due to this fine movement and the large outer diameter of the Neumann CTU it is quite easy to adjust the position of the sensor to less that 1/100mm.
Both sides of the Neumann CTU are held together with three very strong packs of disk springs and secured with set screws. These springs provide a very strong holding force and also keep everything together. The overall tightness of the Neumann CTU is very high so if you mount a camera with a weight of less than 3kg to the Neumann CTU, you will not have to tighten the set screws (two for each radial adjustment screw). For use with heavy imaging outfits we added the set screws to be on the safe side but it is unlikely that even heavy camera assemblies will need them but, should they be needed, they will only need to be very slightly tightened.
The Neumann CTU is available in several thread sizes including M48 (M48x0.75 female both sides) and M68 (M68x1 threads both sides). Adaptors can be added to allow fitting to alternatively threaded setups.
For all units:
Optical thickness (minimum): 17.3 mm
Maximum movement: 1 mm
|Average Rating (2 Reviews): |
Saturday, 2 July 2022 | Robert
I echo the sentiments of previous review.Very well made.!!
Much better option than standard
Tuesday, 28 June 2022 | Tom
I have a decent amount of tilt in my ASI2600. I found ZWOs supplied plate too finicky to work work. That and the annoyingly long cycle of removing power, removing camera and tilt plate, re-adjust, put everything back together and re-test. With the CTUs they have the adjustment screws on the side. No need to take everything apart. You can quickly adjust, take a new image, rinse and repeat. The adjustment is a lot more precise as well and so far I havenít had to readjust anything. So looks like they keep their adjustment. Big thumbs up for this product. Itís very well made and saves a lot of hair pulling.
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