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‘Ohana Delay Line

‘Ohana Delay Line. Installation at the summit Friday , O ctober 1 3 th 06 Pierre Fedou, LESIA. Agenda. Background Delay Line Installation Road Map. Background. ‘Ohana will connect CFHT and Gemini telescopes Via a fiber link. Main sub systems: - Injection modules

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‘Ohana Delay Line

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  1. ‘Ohana Delay Line Installation at the summit Friday, October 13th 06 Pierre Fedou, LESIA

  2. Agenda Background Delay Line Installation Road Map

  3. Background ‘Ohana will connect CFHT and Gemini telescopes Via a fiber link Main sub systems: - Injection modules - Optical fiber links - Delay Line,  our topic today - Beam combiner and IR camera

  4. Background CFHT Jun and Aug 02, J, H, K band Keck I, Dec 02, K Gemini, Jul 03, H, K Injection modules status

  5. Background Keck, installation Aug 04 Tests: Dec 04, Jun 05, K band May 06, H and K Fiber link status

  6. Background Jun 03 & Oct 03 on IOTA, H, K band Jun 06, J, H, K Beam combiner & IR camera status

  7. Delay Line • Designed in 03 and before • Built and tested, in France, mid 04 to mid 06 • Now ready to be re-installed at CFHT

  8. Delay Line Translating stage Translating stage Input #1 Input #2 Fast scan Central carriage Output #2 Output #1

  9. Delay Line 3 or 4 missions of 3 weeks Oct 06 Hardware Jan 07 Opto-mechanical & first lignment Mar 07 Alignment continued May 07 Optional

  10. Delay line subsystem • Translating stage Aerotech • Translating stage Schneeberger • Central carriage • Railways • 6 metallic frames • Fast Scan • One computer

  11. Dec 03 Module #1, version 1.0

  12. New Module #1 Stone

  13. SchneeBerger end Aerotech end Control command

  14. Schneeberger end, looking outside Schneeberger trans. stage Central carriage Module #6 Module #5 rails

  15. Schneeberger end, looking inside Module #3 rails Module #4 Module #5 Central carriage

  16. Aerotech end, looking outside Aerotech translation stage Module #1 Driving belt MeterDrive Stone

  17. Aerotech end, looking inside Aerotech Stone Module #1

  18. Delay line • Our goals for this mission • Opening crates • Moving “big hardware” in Coude Room • Make first alignment of structure • Rails positioning 1 mm over 12.50 m

  19. Delay line • Here is the line just before leaving

  20. Delay line And now at the summit

  21. Delay line The 7th crate concerns injection modules 7 crates: 6 + 1 2 metallic frames 2 metallic frames Aero metallic frame Schnee metallic frame Rails Aerotech on its stone bed Open question: where do we stock this 7th? Closed? Opened?

  22. Delay line OK, let’s open crates! Nail draw Hammer

  23. Delay line One module weighs ~80 kg and is 210 cm long One crate, two modules

  24. Delay line Small parcels

  25. Delay line rails Small parcel

  26. Delay line wedges Need a (transportable) lifting jack

  27. Delay line Metallic paper Thermal soldering

  28. Delay line Vacuum cleaner Thermal soldering

  29. Delay line Stabilized air Plastic film

  30. Delay line Ready to be closed In progress Wedge

  31. Delay line Wall of wood Wedge

  32. Delay line Need a Nail Puller? Electric Hammer

  33. Delay line Roof of wood Plastic film

  34. Delay line We did it!

  35. Delay line Aerotech side Beam combiner Table Schnee side Total Length = 14390mm Total Width = 930mm

  36. Delay line Beam combiner Table

  37. Delay line Week #1, Monday 16th : crates opened and all heavy parts moved in the Coude Room, Day Crew and Meudon Week #2, Monday 23rd : small pieces are moved and alignment made by Meudon Week #3, Monday 30th : continued, overturning, extra time just in case…

  38. Road map • Delay Line installation: Oct 06 -> spring 07 • Injection Modules: time has been asked on Keck • Fiber Link beetween Gemini and CFHT: summer 07 • Beam Combiner installation: spring to summer 07 • Determination of length of the base: on going effort with IGN and OCA • First light: when ready, fall 07?

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