Finger Lakes Instrumentation
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FLI Filters
Hutech Filters
The Finest Color Filter Wheels Available
Small: CFW-1-5
(five 50mm diameter)
CFW-1-8
(eight 28mm diameter)
Large: CFW-3-12
(twelve 50 mm diameter)
CFW-3-20
(twenty 26mm diameter)
CFW-6-6
(six 79mm diameter)
Precision Line: CFW-4-5
(five 50mm x 50mm)
CFW-5-7
(seven 50mm x 50mm)
CFW-2-7
(seven 50mm diameter)
CenterLine: CFW-7-8
(eight 50mm diameter)
Info Coming Soon  
Custom CFWs are available for nearly any application
Adobe PDF file with Complete CFW Specifications
 

Specifications

Model

CFW-1-5
Five 50mm filters
CFW-1-8
Eight 28mm filters
Precision CFW-2-7
Seven 50mm filters
Longest Dimension   7.990" 7.990" 9.625"
Body Thickness (-motor)   .810" .810" .810"
Camera Coupling Pocket   2.930" 2.930" 2.930"
Telescope Coupling   2.005" - 24 UNS-2B 2.005" - 24 UNS-2B 2.005" - 24 UNS-2B
Filter Cup Depth   .185 to .190" .185 to .190" .205"
Filter Cup Diameter   2.005" 1.11" 1.976"
Internal wheel material   Sintra Sintra Aluminum
Standard cable length   15' 15' 15'
Power Supply Output   12VDC, 1000 mA 12VDC, 1000 mA 12VDC, 1000 mA
O-ring thickness   .10 .10 .10
PC Interface   USB USB USB
Path Increase   .540" .540" .540"
Weight    1.6 lb. 1.6 lb. 2.6 lb.
Number of Filter Positions   5 8 7

* The Precision Line of color filter wheels feature a highly accurate no-slip chain driven system, precision ground pivot pin and matching precision ground bushing. No internal lights used for homing to ensure that your images are not compromised. The robust mechanical design insures rotational accuracy, repeatability and wheel stability.

 

Large CFW Specifications

Model

CFW-3-12
Twelve 50mm filters
CFW-3-20
Twenty  25mm filters
Longest Dimension   13.750" 13.750"
Body Thickness (-motor)   .880" .880"
Camera Coupling Pocket   2.930" 2.930"
Telescope Coupling   2.005" - 24 UNS-2B 2.005" - 24 UNS-2B
Filter Cup Depth   .205" .205"
Filter Cup Diameter   2.005" 1.03"
Internal wheel material   Aluminum Aluminum
Standard cable length   15' 15'
Power Supply Output   12VDC, 1000 mA 12VDC, 1000 mA
O-ring thickness   .10 .10
PC Interface   USB USB
Path Increase   .610" .610"
Weight    6.8 lb. 6.8 lb.
Number of Filter Positions   12 20

   

CFW-3-12 and CFW-3-20
Dimensions in
Adobe PDF Format

Each Large CFW includes an optical bench mounting adapter

 

Model

Precision CFW-4-5
50mm x 50mm Square Filters
Precision CFW-5-7
50mm x 50mm Square Filters
Longest Dimension   9.300" 10.680"
Body Thickness (-motor)   .7850 .8475
Camera Side Coupling ( Pocket)   FLI Standard: 2.930" FLI Standard: 2.930"
Telescope Side Coupling   3.005" - 24 UNS-2B 3.005" - 24 UNS-2B
Filter Cup (width, length, depth)   2.00" x 2.00" x .116" (2.95mm) 2.00" x 2.00" x .116" (2.95mm)
Internal wheel material   CNC Machined Aluminum CNC Machined Aluminum
Power Supply Output   12VDC, 1000 mA 12VDC, 1000 mA
PC Interface   Direct Connect USB Direct Connect USB
Path Increase (FLI Camera)   .505" .505"
Weight      
Number of Filter Positions   5 7

PL_cfw4-5_PDF.jpg (285118 bytes)

The Precision Line of color filter wheels feature a highly accurate no-slip chain driven system, precision ground pivot pin and matching precision ground bushing. No internal lights used for homing to ensure that your images are not compromised. The robust mechanical design insures rotational accuracy, repeatability and wheel stability.

 CAD Drawings

 

 CFW User's Guide in PDF format

Adapter Usage Chart

Telescope to PDF, CFW & camera

Telescope to CFW, DF-2 & camera

Telescope to PDF & camera

Telescope to DF-2 (or CFW) & camera

CFW-1-5
Five 50mm filters
CFW-1-8
Eight 28mm filters
CFW-2-7
Seven 50mm filters

Camera side

Telescope side

Camera side (with protective cover)
<--- Additional CFW-2-7 Images --->
Camera / Camera Adapter Interface

The recessed opening of the color filter wheels securely clamps to a ProLine, MicroLine or "AD" adapter. 

CFW mounting.png (388859 bytes)

This setup adds a minimum distance to the light path and avoids the vignetting issues common with other designs.
For a more thorough explanation of this phenomenon, click here
 

CFW-2-7 Drawing CNC machined internal filter wheel
CFW-1-5 and CFW-1-8

 

Custom CFWs Examples - Call or Email for Quotes

5 x 3.0" filters
   15 x 50mm filters
12 x 50mm square filters