What is the primary purpose of the William Optics Tilt Adjuster for the RedCat 51?
Its purpose is to correct for sensor tilt. This is a slight misalignment between your camera's sensor and the telescope's focal plane, which can cause stars to be sharp in the center of your image but elongated or out-of-focus in the corners. This device allows you to make fine adjustments to align the sensor perfectly, ensuring sharp stars across the entire field of view.
How do I know if I need this tilt adjuster for my RedCat 51?
If you notice that stars in the corners of your images are not perfectly round while the stars in the center are, you likely have sensor tilt. The effect is most noticeable with large sensors and the fast optics of the RedCat 51. This adjuster is the definitive solution to that problem.
Will this WO-M-FD-RC51 tilt adjuster work with other telescopes?
No, this adjuster is designed specifically as an upgrade for the William Optics RedCat 51 astrograph. Its threading (M56) and optical length (12.2 mm) are engineered to integrate seamlessly into that specific optical train.
How does the 12.2 mm optical length of this tilt adjuster affect my imaging train?
The 12.2 mm of length it adds must be factored into your total back focus distance. You will need to reduce the length of your other extension tubes by 12.2 mm to ensure your camera sensor remains at the correct distance from the RedCat 51's final lens element.
What are the input and output threads on the William Optics Tilt Adjuster?
The adjuster has the following connections:
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Telescope Side (Light-In): M56 x 0.75 female thread
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Camera Side (Light-Out): M54 x 0.75 male thread
If I'm imaging the Andromeda Galaxy (M31) with my RedCat 51 and a full-frame sensor, why is this adjuster critical?
Imaging a large target like the Andromeda Galaxy (M31) with a full-frame sensor pushes the RedCat 51's image circle to its limits. Any minor sensor tilt will be immediately obvious as misshapen stars in the corners of your frame, ruining the large, flat field you're trying to capture. This tilt adjuster is critical for ensuring that the thousands of stars across M31's spiral arms are rendered as perfect pinpoints.
