pacs ihdr 12/13 nov 2003 pacs fpu optics: concept and alignment r. graue, d. kampf kayser-threde
TRANSCRIPT
PACS FPU
PACS IHDR 12/13 Nov 2003
Optics: Concept and Alignment
R. Graue, D. KampfKayser-Threde
PACS FPU
PACS IHDR 12/13 Nov 2003
Optics Concept - Overview
• Optical Layout unchanged compared to IIDR• Optical analyses and documentation
completed– Alignment plan– Straylight analyses– Optical Performance analyses (Ray tracing, spot
diagrams)– Mirror fabrication data package
PACS FPU
PACS IHDR 12/13 Nov 2003
Alignment Tasks
• Optical axis of telescope to FPU (alignment cubes/mirrors)
• Top Optics with Calibration Sources and Chopper
• Slicer optics
• Spectrometer/Collimator optics with Grating Assembly
Dummy, Dichroic, FW1, Ge:Ga Detectors
• Bolometer optics with Dichroic, FW2
• Integration of bolometer assembly (CEA)
PACS FPU
PACS IHDR 12/13 Nov 2003
Alignment PlanLaser Battery (AKF) at Telescope secondary mirror
Laser battery
OB simulator
Top Optics
PACS FPU
PACS IHDR 12/13 Nov 2003
Alignment PlanTop Optics at OB with alignment cube and mirror
Top Optics side view
ChopperInternal aperture stop
PACS FPU
PACS IHDR 12/13 Nov 2003
Alignment PlanTop Optics without OB from rear
IntermediateFocal plane
PACS FPU
PACS IHDR 12/13 Nov 2003
Alignment PlanBolometer alignment
Laser diode setup Pinholes at focal plane for laser OR LED‘s
PACS FPU
PACS IHDR 12/13 Nov 2003
Alignment PlanBolometer alignment jig for filter wheel and focal planes
PACS FPU
PACS IHDR 12/13 Nov 2003
Alignment PlanSlicer alignment together with Top Optics
Focal Plane
PACS FPU
PACS IHDR 12/13 Nov 2003
Alignment PlanCollimator Alignment
Laser & LEDSource
PACS FPU
PACS IHDR 12/13 Nov 2003
Alignment procedure (first page only)
PACS FPU
PACS IHDR 12/13 Nov 2003
Autocollimation of Alignment Tool
PACS FPU
PACS IHDR 12/13 Nov 2003
Top Optics Centered
PACS FPU
PACS IHDR 12/13 Nov 2003
Final Alignment
PACS FPU
PACS IHDR 12/13 Nov 2003
Laser test set up
PACS FPU
PACS IHDR 12/13 Nov 2003
Top Optic Set Up
PACS FPU
PACS IHDR 12/13 Nov 2003
Top Optics Alignment Set Up
PACS FPU
PACS IHDR 12/13 Nov 2003
Top Optics Alignment Set Up
PACS FPU
PACS IHDR 12/13 Nov 2003
Alignment
PACS FPU
PACS IHDR 12/13 Nov 2003
OGSE OverviewStatus• OGSE design and procurement nearly completed (Spectrometer: until end of
Nov 2003)Procured OGSE Items• Autocollimation telescope• Optical mounts• 4 x CCD array with optics• PC with framegrabber• 2 x alignment telescope• 10 x HeNe Laser and laser diodes• Set of pinholes with LED's (point sources)• Support structure for pinholes• Masks for mirrors (plexiglas with 3 point orientation to the front surface)• Scatter-plates• Lateral translation stages• 2 x Rotary table• Alignment mirrors during alignment (temporary)• Alignment mirrors for FPFPU alignment• Pentaprism
PACS FPU
PACS IHDR 12/13 Nov 2003
Alignment Status
• Updated Alignment plan issued
• Alignment procedure engineering completed
• Top Optic Alignment under progress (until mid of Nov.2003)
– Chopper, Calibration Sources, Alignment Cubes aligned
• Top Optics Stability test under Helium temperatures in KT
Cryostat after Top Optic alignment
• Slicer, Collimator, Bolometer, Spectrometer alignment until X-
mas 2003