NIC Aperture,
Pupil, and Filter
Wheel Positions
Rev. 2.3
September 19, 2011
Oli Durney
LBTI Optical Engineer
Steward Observatory
University of Arizona
OFD 1
Revision History
PowerPoint File Name
NIC Mechanisms
Version
Date Modified
Changes from Previous Version
NIC Wheel Positions v1.0.ppt
1.0
01-26-11
Original version, PhaseCam wheels (Pupil, FW1, FW2, ND)
NIC Wheel Positions v1.1.ppt
1.1
01-27-11
Include CAD drawing of ND wheel, added Prism & Optics wheels
NIC Wheel Positions v1.2.ppt
1.2
02-01-11
Flip Prism and Optics CAD orientations, colorize filters, change titles
NIC Wheel Positions v1.3.ppt
1.3
02-03-11
Update Notes, add Optics & Prism cell exploded views, add NAC
wheel, re-order slides
NIC Wheel Positions v1.4.ppt
1.4
02-15-11
Add LMIRCam Filter wheels #1-4, add LMIRCam Aperture wheel
NIC Wheel Positions v1.5.ppt
1.5
02-21-11
Revise ‘drawn as’ comment, add red circle for optical axis and Note
NIC Wheel Positions v1.6.ppt
1.6
03-08-11
Change filters in LMIRCam FW#2
NIC Wheel Positions v1.7.ppt
1.7
04-20-11
Add Large & Small Beam Diverter, Image Dichroic, ID 3D view, Left &
Right Shutter
NIC Wheel Positions v1.8.ppt
1.8
04-20-11
Add ‘controlled by’ comment, add NAC Source
NIC Wheel Positions v1.9.ppt
1.9
04-22-11
Add Shutter 3D views
NIC Wheel Positions v2.0.ppt
2.0
04-28-11
Reverse rotation direction and order of NAC wheel, add pinholes in
Pos 3 & 6
NIC Wheel Positions v2.1.ppt
2.1
04-29-11
Reverse rotation direction and order of LMIRCam FW#2, Add Revision
History
NIC Wheel Positions v2.2.ppt
2.2
05-03-11
Add ‘Steps’ column to all slides, situate ‘Home’ in between Pos 5&6
on NAC slide, revise text on Image Dichroic slide, add red optical axis
to all other slides, revise ‘Note’ accordingly
NIC Wheel Positions v2.3.ppt
2.3
09-19-11
Add 12-hole and 24-hole aperture masks in Pos 6&7 of LMIRCam
FW#1, illustration shows installed orientation of hole patterns
OFD 2
ND Wheel - Assembly
• Neutral Density filter set: P/N FX90-0100 from Janos
Technology
• Drawn as viewed with cover plate removed from Access
Port side (side facing PICNIC Detector)
• CW rotation of motor = CW rotation of wheel
Position
Steps
Description
Dimensions
1 (Home)
Open
f=25.4mm
2
OD=0.50, T=31.62%
f=25.4mm, t=1mm
3
OD=1.00, T=10.00%
f=25.4mm, t=1mm
4
OD=2.00, T=1.00%
f=25.4mm, t=1mm
5
OD=3.00, T=0.10%
f=25.4mm, t=1mm
CW
1
• Controlled by Motor Box #2, Drive #1
NOTE: Optical Axis (Exit Port) is shown in red and is located at
Position 1 when Wheel is in the Home position, Pos 1
will be replaced with an A/R coated ZnSe window
OFD 3
Optics Wheel – Assembly
• CaF2 re-imaging lenses from ISP Optics
• Drawn as viewed with cover plate removed from
flat side (side facing PICNIC Detector)
• CW rotation of motor = CW rotation of wheel
Position
Steps
Dimensions
1 (Home)
Open
Open
2
Dual Large Lenses
f=9.5mm, t=2.8mm
3
Open
Open
4
Mixed Large/Small
f=9.5mm, t=2.8mm
Lenses
f=8.5mm, t=2.8mm
5
Open
Open
6
Dual Small Lenses
f=8.5mm, t=2.8mm
4
Description
CW
1
• Controlled by Motor Box #2, Drive #2
NOTE: Optical Axis (Exit Port) is shown in red and is located
at Position 1 when Wheel is in the Home position
OFD 4
Optics Wheel – Cells
Dual Large Lenses
Mixed Large/Small Lenses
Dual Small Lenses
OFD 5
Prism Wheel - Assembly
• Neutral Density filter set: P/N FX90-0100 from Janos
Technology
• Drawn as viewed with cover plate removed from
Baffle Tube side (side facing Field Lenses)
• CW rotation of motor = CW rotation of wheel
Position
Steps
Dimensions
1 (Home)
Open
Open
2
Dual Triplet Prisms
12x12mm
3
H Filter
f=25.4mm
4
Single Triplet Prism
12x12mm
1
Description
CW
4
• Controlled by motor Box #2, Drive #3
with H Filter
5
K Filter
f=25.4mm
6
Single Triplet Prism
12x12mm
with K Filter
NOTE: Optical Axis (Entrance Port) is shown in red and is located
at Position 1 when Wheel is in the Home position
OFD 6
Prism Wheel – Cells
Dual Triplet Prisms
Single Triplet Prism with Filter
OFD 7
NAC Aperture Wheel
• ZnSe lenses and mirror from Edmund Optics
• Drawn as viewed from cryostat Window side
• CWW rotation of motor = CWW rotation of wheel
• Controlled by Motor Box #2, Drive #4
4
Position
Steps
Name
Size
1 (Home)
0
Open
42.86 x 42.86mm
2
100000
ZnSe Lens and 45°
f=25.4mm
Fold Mirror
3
200000
5 mm Aperture
f=25.4mm
4
300000
Znse Lens
f=25.4mm
5
400000
3x3 Grid of Pinholes
36.46 x 36.46mm
CCW
f=1mm, d=8.94mm
6
500000
50 mm Pinhole
f=25.4mm
1
NOTE: Optical Axis (Entrance Port) is shown in red and is located
at Position 1 when Wheel is in the Home position
OFD 8
NAC Source Slide
• Wires installed on 03-07-11
• Drawn as viewed from cryostat Window side
• CW rotation of motor = vertical translation of the slide ??
• Controlled by Motor Box #1, Drive #7
AWG
Size
1
30
0.0100”
2
40
0.0310”
3
40
0.0310”
4
48
0.0012”
5
48
0.0012”
30
0.0100”
40
0.0310”
8
40
0.0310”
9
48
0.0012”
10
48
0.0012”
6
7
(Home)
Steps
1
2
3
4
5
6
7
8
9
10
Move
Position
1
2
3
4
5
6
7
8
9
10
Back View
NOTE: Pos 6-10 are not currently working (05-03-11). However,
the wires are installed.
OFD 9
LMIRCam Filter Wheel #1
• Single Apertures installed on 01-21-11, Hole patterns
installed on 09-16-11
• Drawn as viewed with cover plate removed from Baffle
Tube side (side facing LMIRCam Dichroic)
• CW rotation of motor = CCW rotation of wheel
• Controlled by LMIRCam Motor Box, Drive #1
Size
1 (Home)
Open
25.4mm
2
Small Dual Aperture
f~7.19mm
3
Large Dual Aperture
f~7.49mm
4
Left Aperture
f~8.16mm
5
Right Aperture
f~8.21mm
6
24-hole Pattern
25.4mm
7
12-hole Pattern
25.4mm
8
Open
25.4mm
9
Open
25.4mm
10
Open
25.4mm
11
Pinhole
~0.33mm
12
Blank
25.4mm
4
Name
10
Steps
7
Position
NOTE: Optical Axis (Entrance Port) is shown in red and is located
at Position 1 when Wheel is in the Home position
CCW
1
OFD 10
LMIRCam Filter Wheel #2
• All filter retainer rings adjusted on 01-19-11, H & J filters
installed on 03-08-11
• Drawn as viewed with cover plate removed from flat side
(side facing LMIRCam Baseplate)
• CCW rotation of motor = CCW rotation of wheel
• Controlled by LMIRCam Motor Box, Drive #2
Size
1 (Home)
Open
25.4mm
2
Ks (2.00-2.32 mm)
25.4mm
3
H (1.50-1.81 mm)
25.4mm
4
J (1.18-1.36 mm )
25.4mm
5
L-spec (2.81-4.00 mm)
25.4mm
6
M-long (4.60-5.86 mm)
25.4mm
7
Std ‘M’ (4.60-4.97 mm)
25.4mm
8
L-long 2 (3.81-4.05 mm) 25.4mm
9
L-long 1 (3.51-4.06 mm) 25.4mm
10
Std ‘L’ (3.41-3.99 mm)
25.4mm
11
L-short (3.10-3.51 mm)
25.4mm
12
Blank
25.4mm
10
Name
NOTE: Optical Axis (Exit Port) is shown in red and is located
at Position 1 when Wheel is in the Home position
4
Steps
1
Position
CCW
7
OFD 11
LMIRCam Filter Wheel #3
• New filter (Pos 10) installed on May 11, 2010
• Drawn as viewed with cover plate removed from Baffle
Tube side (side facing Biconic #2)
• CW rotation of motor = CCW rotation of wheel
• Controlled by LMIRCam Motor Box, Drive #3
Size
1 (Home)
Open
25.4mm
2
H2O Ice 1 (2.96-3.12 mm) 25.4mm
3
H2O Ice 2 (3.01-3.15 mm) 25.4mm
4
PAH 1 (3.26-3.31 mm)
25.4mm
5
PAH 2 (3.38-3.43 mm)
25.4mm
6
Br-a (4.02-4.09 mm)
25.4mm
7
Br-a off (3.97-4.04 mm) 25.4mm
8
L-cont 1 (3.13-3.20 mm) 25.4mm
9
L-cont 2 (3.39-3.54 mm) 25.4mm
10
L-cont 3 (3.55-3.64 mm) 25.4mm
11
L-cont 4 (3.68-3.88 mm) 25.4mm
12
Blank
1
Name
7
Steps
4
Position
CCW
10
25.4mm
NOTE: Optical Axis (Entrance Port) is shown in red and is located
at Position 1 when Wheel is in the Home position
OFD 12
LMIRCam Filter Wheel #4
• PK-50 Blocker not installed because of OD clearance
concern (substrate delivered with 2 chips)
• Drawn as viewed with cover plate removed from Baffle
Tube side (side facing detector)
• CW rotation of motor = CW rotation of wheel
• Controlled by LMIRCam Motor Box, Drive #4
Size
1 (Home)
Open
25.4mm
2
Blank
25.4mm
3
PK-50 Blocker
25.4mm
4
Pupil Imaging Lens (ZnSe)12.7mm
5
Open
25.4mm
6
Open
25.4mm
7
Open
25.4mm
8
Open
25.4mm
9
Open
25.4mm
10
Open
25.4mm
11
Open
25.4mm
12
Open
25.4mm
7
Name
NOTE: Optical Axis (Exit Port) is shown in red and is located
at Position 1 when Wheel is in the Home position
1
Steps
4
Position
CW
10
OFD 13
LMIRCam Aperture Wheel
• New filter (Pos 10) installed on May 11, 2010
• Drawn as viewed with cover plate removed from side
opposite cryo-motor (side facing Biconic #2)
• CW rotation of motor = CW rotation of wheel
Position
Steps
Size
1 (Home)
Open
50.8x50.8mm
2
Open
50.8x50.8mm
3
Pinhole
1mm?
4
Blank
50.8x50.8mm
3
Name
1
2
• Controlled by LMIRCam Motor Box, Drive #5
CW
4
NOTE: Optical Axis (Exit Port) is shown in red and is located
at Position 1 when Wheel is in the Home position
OFD 14
Large Beam Diverter Slide
• Two (2) possible configurations for the Beam Diverter –
Large (2-position) and Small (3-position)
Move
• Drawn as viewed from entrance Window
• CW rotation of motor = right translation of the slide ??
• Controlled by Motor Box #1, Drive #6
Position
Steps
Name
Size
1 (Home)
Open
72x57mm
2
Large Dichroic
74x58x7mm
Position of 1
when 2 is
centered along
the optical axis
1
2
NOTE: Position 1 nominally houses the Large Mirror. It is
currently removed to allow an open path to LMIRCam
Optical Axis is shown in red and is located at Position 1
when Slide is in the Home position
OFD 15
Image Dichroic Slide
• Drawn as viewed from entrance Window
• CW rotation of motor = right translation of the slide ??
• Controlled by Motor Box #1, Drive #1
Move
Position
Steps
Name
Size
1 (Home)
Open
72x57mm
2
Large Dichroic
74x58x7mm
1
2
NOTE: Optical Axis is shown in red and is located at Position 1
when Slide is in the Home position
OFD 16
Image Dichroic Assembly
Front View
ISO View
Side View
OFD 17
Right Shutter
• Shutter located in front of Fixed Nulling Mirror
• Drawn as viewed from entrance Window
• Controlled by Motor Box #1, Drive #2
Position
Steps
Name
Size
1 (Home)
Vertical – half open
20mm
2
Closed
20mm
3
Horizontal – half open
20mm
4
Open
20mm
1
2
3
4
NOTE: Optical Axis is shown in red
OFD 18
Left Shutter
• Shutter located in front of Field Steering Mirror
• Drawn as viewed from entrance Window
• Controlled by Motor Box #1, Drive #3
Position
Steps
Name
Size
1 (Home)
Vertical – half open
20mm
2
Closed
20mm
3
Horizontal – half open
20mm
4
Open
20mm
1
2
3
4
NOTE: Optical Axis is shown in red
OFD 19
Shutter Assemblies
Left Shutter
Right Shutter
OFD 20
Additional Slides
OFD 21
Small Beam Diverter Slide
• Two (2) possible configurations for the Beam Diverter –
Large (2-position) and Small (3-position)
• Drawn as viewed from entrance Window
Move
Move
• Controlled by Motor Box #1, Drive #6
Position
Steps
Name
Size
1
Open
42x30mm
2 (Home)
Small Mirror
52x32x9.53mm
3
Small Dichroic
54x38x7mm
1
2
3
NOTE: Position 1 is Open when slide is moved to Position 2. It
is Small Mirror when slide is moved to Position 3
Optical Axis is shown in red and is located at Position 2
when Slide is in the Home position
OFD 22