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Daystar Interference Eliminator - Quark to M42
The Daystar Interference Eliminator is the single most critical accessory for imaging with a Quark, connecting it directly to your M42 T-thread camera while solving the persistent problem of interference fringes. This adapter provides a crucial +/- 5 degrees of tilt, a range specifically engineered to eliminate the stubborn Newton's Rings common in monochromatic solar imaging. It also offers mechanical control, with 30-degree rotational clocking for cable management and native support for 17.5mm back-focus cameras, plus an included 5mm spacer to perfectly accommodate 12.5mm sensors.
+/- 5 Degrees of Tilt: Eliminating Solar Interference Fringes
Newton's Rings, or interference fringes, are artifacts caused by the near-perfectly parallel surfaces between your camera sensor and the Quark's optical elements. The Daystar Interference Eliminator solves this by introducing a precise, controlled tilt of up to 5 degrees. This slight angle breaks the internal reflections that create the fringe pattern, resulting in a clean, uniform image background without post-processing headaches.
Mechanical Flexibility: 30° Clocking and Dual Back-Focus Spacing
Beyond its optical function, this adapter provides essential mechanical adjustments for your imaging train. The camera's clocking angle can be rotated in 30-degree intervals by repositioning the thumbscrews, allowing you to orient your camera for optimal cable routing and framing.
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Native 17.5mm Spacing: The adapter is designed to work directly with cameras that have a 17.5mm flange-to-sensor distance, such as many popular ZWO models.
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Included 5mm Spacer: For cameras with a shorter 12.5mm back focus, the included 5mm spacer ring installs easily to achieve perfect spacing and a sharp, focused image.
Daystar vs. Nighttime Adapters: Why 5° of Tilt Matters for Solar
While other tilt adapters exist, they are typically designed for nighttime imaging where fringe patterns are less severe. Those adapters often lack the adjustment range needed for solar work. The Daystar Interference Eliminator's generous +/- 5-degree tilt range is specifically designed to handle even the most pronounced interference fringes encountered under the high-contrast conditions of H-alpha solar imaging, a task where lesser adapters fail.
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What are Newton's Rings and why does the Daystar Interference Eliminator fix them?
Newton's Rings are concentric, wavy patterns that appear in solar images. They are an interference effect caused by light reflecting between the parallel surfaces of your Quark filter and your camera's sensor cover glass. The Daystar Interference Eliminator introduces a slight tilt of up to +/- 5 degrees to one of these surfaces, breaking the parallelism and causing the interference pattern to disappear.
How do I use the Daystar Interference Eliminator with my ZWO camera (17.5mm back focus)?
For a ZWO camera or any other model with a 17.5mm back focus, you can use the Daystar Interference Eliminator directly without any spacers. Simply thread it onto your Quark and attach your M42 T-threaded camera to the adapter for correct spacing.
My camera has 12.5mm back focus. Can I use this Daystar adapter?
Yes. The Daystar Interference Eliminator includes a 5mm spacer ring specifically for this purpose. Install the 5mm spacer between the main tilt body and your camera to achieve the correct 12.5mm spacing required for focus.
Will this Daystar adapter work for nighttime deep-sky imaging?
While it could physically connect a camera, its primary design is to solve a problem specific to solar imaging with a Quark. The aggressive +/- 5-degree tilt range is generally far more than what is needed for nighttime use and could potentially introduce other optical issues if not set perfectly flat.
How do I adjust the camera rotation on the Daystar Interference Eliminator?
You can adjust the camera's clocking angle for better cable management or framing. Simply remove the thumbscrews, rotate the camera plate to a different set of holes (spaced at 30-degree intervals), and re-insert the thumbscrews to lock it in place.
Does the Daystar Interference Eliminator change the focal length of my telescope?
No. This is a 1x adapter with no optical elements. It does not provide any magnification or reduction and will not alter the effective focal length of your system. Its sole purpose is mechanical coupling and tilt adjustment.
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| Product |
Daystar Interference Eliminator |
| Application |
Solar Imaging with Daystar Quark |
| Telescope Connection |
Daystar Quark |
| Camera Connection |
M42 x 0.75 (T-Thread) |
| Tilt Adjustment Range |
+/- 5 degrees |
| Rotation Adjustment |
30-degree intervals |
| Supported Back Focus |
17.5mm (native), 12.5mm (with included 5mm spacer) |
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Interference Eliminator Body
× 1
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No product-specific downloads are available for this accessory.
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Daystar Filters Warranty
