Daystar Filters Interference Eliminator - 2" to C Mount

• Innovative Solution for Interference: Specifically designed to tackle the common issue of interference fringes, patterns, or Newton's Rings in monochromatic light imaging, particularly Hydrogen Alpha.
• Camera Tilt Mechanism: Utilizes a unique tilting action to shift the camera off-normal, maintaining the image sensor's center stationary. This ensures focus, framing, and vignetting remain unaffected.
• Optical Path Adjustment: By altering the angle of incidence and optical path lengths inside the image sensor, it effectively mitigates interference without impacting image quality.
• Easy Installation: Designed for direct placement in front of the camera in the optical train. Ensures a specific distance of 17.5mm from the male C thread flange to the camera's focal plane for optimal performance.
• Spacer Requirement for CS Mount Cameras: Requires a 5mm spacer for CS mount cameras to achieve the best effect, while C mount cameras need no spacers.
• Simple Usage Process: Adjustable by loosening thumbscrews and sliding the two halves apart to achieve the desired tilt, minimizing interference patterns.
• Fine Tuning Capability: Offers the ability to adjust the tilt minimally to eliminate fringes, essential in fast focal ratio systems to avoid focus loss at the image's top and bottom.
• Directional Adjustment Options: If the maximum tilt in one direction is ineffective, the device can be fully tilted in the opposite direction for better results.
• Reduction in Severe Cases: In extreme cases, it might not completely remove the interference pattern, but significantly reduces it to a level manageable by flatfielding or compositing techniques.

Specifications

Camera compatibility: Digital cameras such as Pt. Grey, Lumenera, Imaging Source, and many more CCD and CMOS cameras.
Telescope/filter compatibility: Recommended for long focal ratios (F/30) such as DayStar Filters.
Thread: Male/Female 'C' thread, 1-32 UN.
Dimensions: 41x56mm.
Additional back focus required: 16mm.
Radius of curvature: 27.5mm.
Recommended distance to focal plane: 17.5mm from male C flange. (Exact for C mount cameras).
Range of motion: +/- 5 degrees.
Weight: 0.1kg (0.2 lb) CNC machined aluminum.
Maximum camera weight: 3.5kg (7.7lb)