Phone: (585) 624-3760
Fax: (585) 624-9879

Associated Links

CFW User's Guide

CenterLine User's Guide

Associated Brochures

Astronomy Products

Life Science Cameras

Color Filter Wheel Chart

High Speed Filter Wheels

Threaded Filter Retainer

Round Filter Retainer

FLI's threaded Filter Retainer allows the use of ALL round filter thicknesses on the CFW-2-7 Color Filter Wheel.

The Ultimate Astro Imaging System

The Ultimate Imaging System

FLI Color Filter Wheel Specifications

CFW Specifications & Connections Chart

Yahoo Groups

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FLI's proprietary Zero Tilt Adapter (ZTA™)

The ZTA™ is an FLI adapter design that eliminates the common deficiencies found in most astronomical adapters. When you use the ZTA™ you will never experience tilted components, marred adapters, or wobbly interfaces!


The ZTA™ adapter system employs a circular spring that evenly distributes the pressure of three set screws against the ZTA™ dovetailed surface. The resulting clamping force between the two machined surfaces results in zero tilt, zero adapter marring and a complete elimination of problems associated with loose connections. The ZTA™ adapter can be machined to fit nearly any type of camera, color filter wheel or telescope.


ZTA™ - featured in the Atlas focuser and the CenterLine color filter wheel.


Drawing of Atlas ZTA™ flange

Drawing of CenterLine ZTA™ flange


Multi-Step Filter Retainer


Multi Step Retainer

Multi Step Retainer Drawing

FLI's exclusive multi step Filter Retainer allows the use of ALL square filter thicknesses on the CFW-5-7 and CFW-3-20 Color Filter Wheels.

Motorized Color Filter Wheels

Color Filter Wheels

Our color filter wheel’s robust mechanical design provides the basis for stunning, uncompromising images. Each FLI color filter wheel is precision engineered with a highly accurate no-slip drive chain and stepper motor. The large diameter pivot pin and bushings are precision ground and matched for smooth, quiet no-fuss operation night after night. FLI color filter wheels do not use internal lights for homing, so your images are protected from stray light interference.

  • Images
  • Color Filter Wheel Specifications
  • Drawings


CenterLine Dual Color Filter Wheel

Filter retainer

Filter Retainer


CFW-4-5 With a ProLine 16803


Zero Tilt Adapter Video

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Number of Filter Wheels: {number_filter_wheels}
Filter Positions: {filter_positions}
Recommended Filter Size (+/- 0.125mm): {filter_size}
Filter Thickness Range: {filter_thickness_range}
Overall Thickness (less motor): {body_thickness}
Camera Side Connection: {camera_coupling_pocket}
Optical Side Connection: {telescope_coupling}
Internal Wheel Material: {internal_wheel_material}
Interface: {interface}
Power: {power_supply_output}
Weight: {weight}
Price (U.S.): {us_price}
Download Drawing: PDF Drawing

Custom Filter Wheels

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