Filter Wheels (ML & PL Cameras)
Filters listed in Red have been discontinued. Specifications are for reference only.
All filter wheels use unmounted filters only. All use a stepper motor and magnetic Hall-effect homing device.
FLIFilter software is included in the FLI Software Installation Kit on https://www.flicamera.com/software/index.html.
For additional detail regarding mechanical specifications, please see drawings at https://www.flicamera.com/cfw/index.html

Model# ofWheels

FW
Thickness1
inch (mm)Weightlbs (kg)FilterPositions

FilterSize2

FilterThickness

Camera SideOptics SideOBFD with
PL/ML653

OBFD with
MicroLine4

CFW1-510.810 (20.57)

1.7 (0.77)

52" / 50 mm53-5 mm6

FLI Dovetail2" 24tpi

41.6 mm36.3 mm

828 mm

3-5 mm6CFW1-8

10.810 (20.57)

1.7 (0.77)

FLI Dovetail2" 24tpi

41.6 mm36.3 mm

2.9 (1.32)

75

CFW2-7

10.822 (20.88)

CFW3-1010.848 (21.54)

2” / 50 mm

1-5 mmFLI Dovetail2" 24tpi

41.9 mm36.6 mm

6.9 (3.14)

1050 mm SQ

1-5 mmFLI Dovetail3" 24tpi

42.5 mm37.2 mm

CFW3-1210.848 (21.54)

6.9 (3.14)

122” / 50 mm

1-5 mmFLI Dovetail3" 24tpi

42.5 mm37.2 mm

CFW3-20
CFW4-510.848 (21.54)

6.9 (3.14)

2028 mm

1-5 mmFLI Dovetail3" 24tpi

42.5 mm37.2 mm

10.785 (19.94)

2.9 (1.32)

550 mm SQ

1-5 mmFLI Dovetail3" 24tpi

40.9 mm35.6 mm

CFW5-710.85 (21.59)

4.3 (1.95)

750 mm SQ

1-5 mmFLI Dovetail3" 24tpi

42.6 mm37.3 mm

CFW9-510.595 (15.11)

3.2 (1.45)

565 mm SQ

1-5 mm10-32 BP

8M92-1

36.1 mm30.8 mm

CFW10-7

10.731 (18.57)

3.2 (1.45)

765 mm SQ

1-5 mm10-32 BP8

M92-1

39.6 mm34.3 mm

CFW14-5

10.73 (18.5)

5.2 (2.36)

574.8-76.5 mm SQ

1-5.5 mm

M4 x 0.7 BP

M4 x 0.7 BP

39.5 mm34.2 mmCL-1-1021.10 (27.94)

4.3 (1.95)

10950 mm SQ

1-5 mm

CL ZTA10

CL ZTA

48.9 mm11

43.6 mm11

CL-1-1421.10 (27.94)

4.3 (1.95)

1492” / 50 mm51-5 mm

CL ZTA

CL ZTA48.9 mm1143.6 mm11CL-1-162

1.10 (27.94)

4.3 (1.95)

16936 mm

1-5 mm

CL ZTACL ZTA

48.9 mm1143.6 mm11757

Notes:
1. Front to back thickness of the filter wheel excluding motor, in inches (mm).
2. Filters are round unless followed by SQ, indicating square.
3. PL OBFD = Optical back focal distance (image plane of CCD to optics side of filter wheel) for PL or ML camera with 65 mm shutter. See note 12.
4. ML OBFD = OBFD for standard 25mm or 45mm MicroLine with FLI dovetail + filter wheel. See note 12.
5. Carousel will accept either 2” or 50 mm filters.
6. May accept thinner filters with an O-ring; however, the O-ring will reduce the aperture.
7. May be made for 25 mm / 1” filters on special request.
8. BP = bolt pattern. Mates directly to ProLine, MicroLine, or Kepler with optional front plate.
9. Because the carousels overlap, one position in each is normally left open. For example, eight + two open positions for the CL-1-10.
10. CL ZTA = CenterLine Zero Tilt AdapterTM
11. Assumes CL ZTA flange on front of camera. Add 9.22mm for CL adapter to FLI dovetail (AD70 or AD71).
12. For most materials, subtract 1/3 of the thickness of any filter (e.g. subtract 1mm for a 3mm thick filter) as well as 1/3 of the thickness of any cover glass on the CCD.

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