NICI Reviewy

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Nasmyth SubaruInstrument Locations
CREATED 08/15/06
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HiCIAO Instrument Support Frame ISF
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Sideview of HiCIAO VJ with ISF
Upper Frame
Lower Frame
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Important Design Dimensions!
32 mm

• Distance A Front Surface of Vacuum Jacket to
  Center of nearest Target Assembly5.851 Inch
  (148.6mm)
  
• Vacuum Jacket is in the IN-Position.
• Vacuum Jacket can be retracted by 32 mm from
  present IN-Position via Retractable Mechanism
  
• Upper Frame also has built in adjustment in the
  horizontal plane of 25 mm
  
• Distance B Nasmyth Floor to Optical
  Centerline61.41732 inch (1560 mm)

25 mm
B
A
Target Assemblies used by IRCS
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Determine

• Is there enough space available between the last
  item on the AO Bench and the HiCIAO Vacuum Jacket
  for insertion of the HiCIAO Fore-Optics?
  
• What is the space taken up by the HiCIAO
  Fore-Optics along the Optical Path? Will it fit
  with the present location of HiCIAO Vacuum Jacket
  w.r.t. the Nearest Target Assembly as shown in
  previous slide?
• Find a solution to the Installation Sequence for
  HiCIAO on the Subaru Nasmyth Floor.
  

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Dimension C

• Dimension C What is the distance between the
  Center of the Target Assembly shown and the last
  item on the AO Bench??? (this is for Mike). I
  think the last item will be the Interface Plate
  onto which we mount the HiCIAO Fore-Optics.
• Once I have this number C, I can then determine
  the CLEAR space available between the HiCIAO
  Vacuum Jacket and the AO Bench.
  
• This is the space into which we must fit the
  HiCIAO Fore-Optics.
  
• If it is not enough, then the Instrument Support
  Frame (ISF) will have to be modified!

Target Assembly
C
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Summary

• 1) The ISF is ready to be detailed, but until we
  are absolutely certain that we can install the
  instrument on the Nasmyth Floor, I will not be
  able to make detail drawings for the Fabrication.
  This means we need to know how much space is
  required for the HiCIAO Fore-Optics in the
  horizontal direction.