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Galil DMC-4183
Axis D (Filter1)
DI1 to DI3 – detent position of fitler1.
~(D8-D1) & 0x03 = detent position of filter1.
Axis E (Filter2)
DI5 – DI8 – detent position of filter2.
(~(D8-D1)) >> 4 ) & 0x03 = detent position of filter2.
Schnider/IMS
MForce MicroDrive
MFM1CSZ17N4
x5 microsteps
Schnider/IMS
MForce MicroDrive
MFM1CSZ17N4
x5 microsteps
SureStep Stepping Motor
STP-MTR-17048D stepper motor
Felix Dual Filter Wheel Details
Filter Wheel 1 Details
Detent Step Filter_Name Description
0 0 SDSS_g 0.48 µm
1 960 SDSS_r 0.62 µm
2 1920 SDSS_i 0.76 µm
3 2880 SDSS_z 0.86 µm
4 3841 uncoated 0.70 µm
5 4801 Cyl_Len 0.70 µm
6 5761 open7 0.70 µm
7 6721 open8 0.70 µm
Filter Wheel 2 Details
Detent Step Filter_Name Description
0 0 ND1
1 960 ND2
2 1920 ND3
3 2880 ND4
4 3841 uncoated
5 4801 open6
6 5761 open7
7 6721 open8
Motor Shaft:
200 step/rev motor *
x5 microstep
= 1000 step/rev
Size of wheel is
7628 steps/rev
Steps between detents
are 7628/8 = 960.25
Detents are about 150 steps.