Color Filter Wheel

Mechanical Connection to Camera

The default front flange of FLI cameras is the FLI dovetail. This mates to the back of CFWs with a 2.93inch

pocket in the Frame Connection column on the following chart:

As shown, the CFW9 and CFW10 filter wheels require the camera to have a special front flange with the mating

bolt pattern.

Additional parts are sold by FLI, contact an FLI sales representative at sales@flicamera.com

Mechanical Connection to Telescope

Our adapters page includes several adapters, however, our customers often require a custom length to

cooperate with their back focal distance. Custom adapters are available from preciseparts.com. The

necessary numbers to calculate the back focal distance is in the following chart:

Filter Size

The most important aspect of color filter wheel selection is assuring the filter wheel uses filters that cooperate

with your sensor. If the filter is too small, vignette will appear at certain f/ ratios. A chart of all sensor FLI currently

handles is available here:

A sensors diagonal measurement is most important in this situation. We recommend selecting a filter wheel

capable of handling filters with diameters greater than the sensor's diagonal, or, if the filter is square, select

filters with horizontal and vertical measurements greater than that of the sensor. Filter wheel sizes and shapes

are displayed on the following chart:

Another important aspect is the quantity of filters the filter wheel can handle. Depending on the model, between

5 and 20 filters can be stored. The number of filters a wheel stores is indicated by the final number in its model

identification. Select a filter wheel with appropriate filter dimensions and quantity of filters.

Quick Setup

1. Install FLI Software Installation Kit (Includes FLI Filter).

2. Plug the power supply cable into the Color Filter Wheel.

3. Attach the USB cable between the Color Filter Wheel and your computer.

4. Plug the power supply cable into a wall socket or switched AC power strip.

5. Run FLI Filter to initialize the Color Filter Wheel and make control selections.

Complete Setup Procedure, including filter installation and homing procedure, is available in the online manual

found here.