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MizarKey
From JPS Cassini website:
ISS Sensing Instruments:
Wide Angle Camera [WAC](20 cm f/3.5 refractor; 380-1100 nm; 18 filters; 3.5ox3.5o)
Narrow Angle Camera [NAC](2 m f/10.5 reflector; 200-1100 nm; 24 filters; 0.35ox0.35o)

I've been looking for the listing of the filters so that when I'm looking at the raw images and I read "the image was taken using the CL1 and MT3 filters" that I know what wavelength those filters are...

The Rover's filter list is easy to find, but I've had no luck on Cassini's list, and yes, I have looked on the Cyclops website too.

Thanks for any help! smile.gif

Eric P / MizarKey
AlexBlackwell
QUOTE (MizarKey @ Jul 22 2004, 06:24 PM)
From JPS Cassini website:
ISS Sensing Instruments:
Wide Angle Camera [WAC](20 cm f/3.5 refractor; 380-1100 nm; 18 filters; 3.5ox3.5o)
Narrow Angle Camera [NAC](2 m f/10.5 reflector; 200-1100 nm; 24 filters; 0.35ox0.35o)

I've been looking for the listing of the filters so that when I'm looking at the raw images and I read "the image was taken using the CL1 and MT3 filters" that I know what wavelength those filters are...

The Rover's filter list is easy to find, but I've had no luck on Cassini's list, and yes, I have looked on the Cyclops website too.

Thanks for any help!  smile.gif

Eric P / MizarKey

Below is a list. Note that HAL is the H-alpha filter, MTX are the methane absorption filters, CL is the designator for clear filters, CB stands for continuum bands, IRP0 is the infrared 0º polarizer, P120 is the 120º polarizer, P60 is the 60º polarizer, and P0 is the 0º polarizer.

========================================

ISS NAC Filters

Filter Wheel #1
1) CL1
2) Red (650W)
3) BL1 (445W)
4) UV2 (300W)
5) UV1 (255W)
6) IRP0
7) P120
8) P60
9) P0
10)HAL (656N)
11) IR4 (977LP)
12) IR2 (867W)

Filter Wheel #2
1) CL2
2) GRN (562W)
3) UV3 (340W)
4) BL2 (440M)
5) MT2 (727N)
6) CB2 (751N)
7) MT3 (889N)
8) CB3 (938N)
9) MT1 (619N)
10) CB1 (635N)
11) IR3 (952W)
12) IR1 (757W)

========================================

ISS WAC Filters

Filter Wheel #1
1) CL1
2) IR3 (952W)
3) IR4 (977LP)
4) IR5 (1025LP)
5) CB3 (938N)
6) MT3 (889N)
7) CB2 (751N)
8) MT2 (727N)
9) IR2 (867W)

Filter Wheel #2
1) CL2
2) RED (650W)
3) GRN (562W)
4) BL1 (445W)
5) VIO (430SP)
6) HAL (656N)
7) IRP90
8) IRP0
9) IR1 (757W)
Mongo
NARROW ANGLE CAMERA (12 filters per wheel)

Filter Wheel #1

CL1 - 651nm - Clear
RED - 649nm - Red
BL1 - 455nm - Blue band 1
UV2 - 306nm - Ultraviolet band 2
UV1 - 264nm - Ultraviolet band 1
IRP0 - 738nm - Infrared 0º polarizer
P120 - 633nm - 120º polarizer
P60 - 633nm - 60º polarizer
P0 - 633nm - 0º polarizer
HAL - 656nm - Hydrogen Alpha
IR4 - 1001nm - Infrared band 4
IR2 - 861nm - Infrared band 2

Filter Wheel #2

CL2 - 651nm - Clear
GRN - 569nm - Green
UV3 - 343nm - Ultraviolet band 3, polarised
BL2 - 441nm - Blue band 2
MT2 - 727nm - Methane band 2
CB2 - 750nm - Continuum band 2
MT3 - 889nm - Methane band 3
CB3 - 938nm - Continuum band 3
MT1 - 619nm - Methane band 1
CB1 - 619nm - Continuum band 1 - 2-lobed continuum for MT1
CB1a - 635nm
CB1b - 603nm
IR3 - 928nm - Infrared band 3
IR1 - 750nm - Infrared band 1

WIDE-ANGLE CAMERA (9 filters per wheel)

Filter Wheel #1

CL1 - 634nm - Clear
IR3 - 917nm - Infrared band 3
IR4 - 1000nm - Infrared band 4
IR5 - 1027nm - Infrared band 5
CB3 - 939nm - Continuum band 3
MT3 - 890nm - Methane band 3
CB2 - 752nm - Continuum band 2
MT2 - 728nm - Methane band 2
IR2 - 852nm - Infrared band 2

Filter Wheel #2

CL2 - 634nm - Clear
RED - 647nm - Red
GRN - 568nm - Green
BL1 - 463nm - Blue band 1
VIO - 420nm - Violet
HAL - 656nm - Hydrogen Alpha
IRP90 - 705nm - Infrared 90º polarizer
IRP0 - 705nm - Infrared 0º polarizer
IR1 - 740nm - Infrared band 1

The above information was compiled from several sources.

Bill
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