1. OFD 1 Oli Durney LBTI Optical Engineer Steward Observatory University of Arizona NIC Aperture, Pupil, and Filter Wheel Positions Rev. 2.3 September 19, 2011

2. OFD 2 Revision History PowerPoint File NameVersionDate Modified Changes from Previous Version NIC Mechanisms NIC Wheel Positions v1.0.ppt1.001-26-11Original version, PhaseCam wheels (Pupil, FW1, FW2, ND) NIC Wheel Positions v1.1.ppt1.101-27-11Include CAD drawing of ND wheel, added Prism & Optics wheels NIC Wheel Positions v1.2.ppt1.202-01-11Flip Prism and Optics CAD orientations, colorize filters, change titles NIC Wheel Positions v1.3.ppt1.302-03-11 Update Notes, add Optics & Prism cell exploded views, add NAC wheel, re-order slides NIC Wheel Positions v1.4.ppt1.402-15-11Add LMIRCam Filter wheels #1-4, add LMIRCam Aperture wheel NIC Wheel Positions v1.5.ppt1.502-21-11Revise ‘drawn as’ comment, add red circle for optical axis and Note NIC Wheel Positions v1.6.ppt1.603-08-11Change filters in LMIRCam FW#2 NIC Wheel Positions v1.7.ppt1.704-20-11 Add Large & Small Beam Diverter, Image Dichroic, ID 3D view, Left & Right Shutter NIC Wheel Positions v1.8.ppt1.804-20-11Add ‘controlled by’ comment, add NAC Source NIC Wheel Positions v1.9.ppt1.904-22-11Add Shutter 3D views NIC Wheel Positions v2.0.ppt2.004-28-11 Reverse rotation direction and order of NAC wheel, add pinholes in Pos 3 & 6 NIC Wheel Positions v2.1.ppt2.104-29-11 Reverse rotation direction and order of LMIRCam FW#2, Add Revision History NIC Wheel Positions v2.2.ppt2.205-03-11 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.ppt2.309-19-11 Add 12-hole and 24-hole aperture masks in Pos 6&7 of LMIRCam FW#1, illustration shows installed orientation of hole patterns

3. OFD 3 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 Controlled by Motor Box #2, Drive #1 PositionStepsDescriptionDimensions 1 (Home)Open  =25.4mm 2 OD=0.50, T=31.62%  =25.4mm, t=1mm 3 OD=1.00, T=10.00%  =25.4mm, t=1mm 4 OD=2.00, T=1.00%  =25.4mm, t=1mm 5 OD=3.00, T=0.10%  =25.4mm, t=1mm 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 1 2 3 4 5 CW

4. OFD 4 Optics Wheel – Assembly CaF 2 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 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 PositionStepsDescriptionDimensions 1 (Home)OpenOpen 2 Dual Large Lenses  =9.5mm, t=2.8mm 3 OpenOpen 4 Mixed Large/Small  =9.5mm, t=2.8mm Lenses  =8.5mm, t=2.8mm 5 OpenOpen 6Dual Small Lenses  =8.5mm, t=2.8mm 4 3 1 5 2 6 CW

5. OFD 5 Optics Wheel – Cells Dual Large LensesDual Small LensesMixed Large/Small Lenses

6. OFD 6 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 Controlled by motor Box #2, Drive #3 PositionStepsDescriptionDimensions 1 (Home)OpenOpen 2 Dual Triplet Prisms12x12mm 3 H Filter  =25.4mm 4 Single Triplet Prism12x12mm with H Filter 5 K Filter  =25.4mm 6Single Triplet Prism12x12mm with K Filter CW 1 4 5 2 3 6 NOTE: Optical Axis (Entrance Port) is shown in red and is located at Position 1 when Wheel is in the Home position

7. OFD 7 Prism Wheel – Cells Dual Triplet PrismsSingle Triplet Prism with Filter

8. OFD 8 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 PositionStepsNameSize 1 (Home)0Open42.86 x 42.86mm 2 100000ZnSe Lens and 45°  =25.4mm Fold Mirror 3 2000005 mm Aperture  =25.4mm 4 300000Znse Lens  =25.4mm 5 4000003x3 Grid of Pinholes 36.46 x 36.46mm  =1mm, d=8.94mm 650000050  m Pinhole  =25.4mm NOTE: Optical Axis (Entrance Port) is shown in red and is located at Position 1 when Wheel is in the Home position 1 6 5 3 4 2 CCW

9. OFD 9 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 PositionStepsAWGSize 1300.0100” 2 400.0310” 3 400.0310” 4 480.0012” 5480.0012” 6300.0100” 7 400.0310” 8 400.0310” 9 480.0012” 10480.0012” 1 2 3 4 5 6 7 8 9 10 Move (Home) NOTE: Pos 6-10 are not currently working (05-03-11). However, the wires are installed. 1 2 3 4 5 6 7 8 9 10 Back View

10. OFD 10 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 1 11 9 5 3 CCW PositionStepsNameSize 1 (Home)Open25.4mm 2 Small Dual Aperture  ~7.19mm 3 Large Dual Aperture  ~7.49mm 4 Left Aperture  ~8.16mm 5 Right Aperture  ~8.21mm 624-hole Pattern25.4mm 712-hole Pattern25.4mm 8Open25.4mm 9Open25.4mm 10Open25.4mm 11Pinhole~0.33mm 12Blank25.4mm 7 2 4 6 8 10 12 NOTE: Optical Axis (Entrance Port) is shown in red and is located at Position 1 when Wheel is in the Home position

11. OFD 11 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 7 5 3 11 9 CCW PositionStepsNameSize 1 (Home)Open25.4mm 2 K s (2.00-2.32  m) 25.4mm 3H (1.50-1.81  m)25.4mm 4J (1.18-1.36  m )25.4mm 5L-spec (2.81-4.00  m)25.4mm 6M-long (4.60-5.86  m)25.4mm 7Std ‘M’ (4.60-4.97  m)25.4mm 8L-long 2 (3.81-4.05  m)25.4mm 9 L-long 1 (3.51-4.06  m)25.4mm 10 Std ‘L’ (3.41-3.99  m) 25.4mm 11 L-short (3.10-3.51  m)25.4mm 12 Blank25.4mm 1 8 10 12 2 4 6 NOTE: Optical Axis (Exit Port) is shown in red and is located at Position 1 when Wheel is in the Home position

12. OFD 12 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 10 8 6 2 12 CCW PositionStepsNameSize 1 (Home)Open25.4mm 2 H 2 O Ice 1 (2.96-3.12  m)25.4mm 3 H 2 O Ice 2 (3.01-3.15  m)25.4mm 4 PAH 1 (3.26-3.31  m)25.4mm 5 PAH 2 (3.38-3.43  m)25.4mm 6Br-  (4.02-4.09  m)25.4mm 7Br-  off (3.97-4.04  m)25.4mm 8L-cont 1 (3.13-3.20  m)25.4mm 9L-cont 2 (3.39-3.54  m)25.4mm 10L-cont 3 (3.55-3.64  m)25.4mm 11L-cont 4 (3.68-3.88  m)25.4mm 12Blank25.4mm 4 11 1 3 5 7 9 NOTE: Optical Axis (Entrance Port) is shown in red and is located at Position 1 when Wheel is in the Home position

13. OFD 13 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 10 12 2 6 8 CW PositionStepsNameSize 1 (Home)Open25.4mm 2 Blank25.4mm 3 PK-50 Blocker25.4mm 4 Pupil Imaging Lens (ZnSe)12.7mm 5 Open25.4mm 6Open25.4mm 7Open25.4mm 8Open25.4mm 9Open25.4mm 10Open25.4mm 11Open25.4mm 12Open25.4mm 4 9 7 5 3 1 11 NOTE: Optical Axis (Exit Port) is shown in red and is located at Position 1 when Wheel is in the Home position

14. OFD 14 4 3 CW 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 Controlled by LMIRCam Motor Box, Drive #5 PositionStepsNameSize 1 (Home)Open50.8x50.8mm 2 Open50.8x50.8mm 3 Pinhole1mm? 4 Blank50.8x50.8mm 1 2 NOTE: Optical Axis (Exit Port) is shown in red and is located at Position 1 when Wheel is in the Home position

15. OFD 15 Large Beam Diverter Slide Two (2) possible configurations for the Beam Diverter – Large (2-position) and Small (3-position) Drawn as viewed from entrance Window CW rotation of motor = right translation of the slide ?? Controlled by Motor Box #1, Drive #6 PositionStepsNameSize 1 (Home)Open72x57mm 2 Large Dichroic74x58x7mm 12 Position of 1 when 2 is centered along the optical axis Move 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

16. OFD 16 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 PositionStepsNameSize 1 (Home)Open72x57mm 2 Large Dichroic74x58x7mm 12 Move NOTE: Optical Axis is shown in red and is located at Position 1 when Slide is in the Home position

17. OFD 17 Image Dichroic Assembly Front View Side View ISO View

18. OFD 18 Right Shutter Shutter located in front of Fixed Nulling Mirror Drawn as viewed from entrance Window Controlled by Motor Box #1, Drive #2 PositionStepsNameSize 1 (Home)Vertical – half open20mm 2 Closed20mm 3 Horizontal – half open20mm 4 Open20mm 12 34 NOTE: Optical Axis is shown in red

19. OFD 19 Left Shutter Shutter located in front of Field Steering Mirror Drawn as viewed from entrance Window Controlled by Motor Box #1, Drive #3 PositionStepsNameSize 1 (Home)Vertical – half open20mm 2 Closed20mm 3 Horizontal – half open20mm 4 Open20mm 12 34 NOTE: Optical Axis is shown in red

20. OFD 20 Shutter Assemblies Left ShutterRight Shutter

21. OFD 21 Additional Slides

22. OFD 22 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 Controlled by Motor Box #1, Drive #6 PositionStepsNameSize 1Open42x30mm 2 (Home)Small Mirror52x32x9.53mm 3 Small Dichroic54x38x7mm 23 Move 1 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