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

2 Agenda 1.Background 2.Delay Line Installation 3.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 Input #1 Input #2 Output #1 Output #2 Central carriage Translating stage Fast scan

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

12 Dec 03 Module #1, version 1.0

13 New Module #1 Stone

14 SchneeBerger end Aerotech end Control command

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

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

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

18 Aerotech end, looking inside Stone Aerotech Module #1

19 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 m

20 Here is the line just before leaving Delay line

21 Delay line And now at the summit

22 7 crates: metallic frames Aero metallic frame Schnee metallic frame Rails Aerotech on its stone bed The 7 th crate concerns injection modules Delay line Open question: where do we stock this 7th? Closed? Opened?

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

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

25 Delay line Small parcels

26 Delay line rails Small parcel

27 Delay line wedges Need a (transportable) lifting jack

28 Delay line Thermal soldering Metallic paper

29 Delay line Vacuum cleaner Thermal soldering

30 Delay line Stabilized air Plastic film

31 Delay line In progress Ready to be closed Wedge

32 Delay line Wall of wood Wedge

33 Delay line Need a Nail Puller? Electric Hammer

34 Delay line Plastic film Roof of wood

35 Delay line We did it!

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

37 Delay line Beam combiner Table

38 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…

39 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?