Presentation - Telescopes - CfAI, Durham University - Ray Sharples

8/7/2019 Presentation - Telescopes - CfAI, Durham University - Ray Sharples

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Centre for AdvancedCentre for Advanced

InstrumentationInstrumentation CDDC 28CDDC 28thth July 2009July 2009

Centre for Advanced InstrumentationCentre for Advanced Instrumentation

Durham UniversityDurham University

48 Members:

7 Academic staff13 Instrument scientists, project managers

12 Engineers (optical,mech,elec,soft)4 Tech/Sec12 PhD students

NetPark Research Institute

Astronomical Instrumentation Group Applied Optics & Photonics Group

Precision Engineering/Metrology Lab Test & Qualification Lab Bio-Imaging Lab Spinoff company:

Durham Smart Imaging

Rochester Building


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CfAICfAI-- ActivitiesActivitiesConstruction of Instrumentation for Ground and Space Based Telescopes

Gemini Telescopes - 2x 8.1m tel. in Hawaii/Chile

Southern Africa Large Telescope (SALT) - 10m tel. in South Africa

ESO Very Large Telescopes (VLT) - 4x 8.2m tel. in Chile

James Webb Space Telescope (JWST) - 6.5m tel @ L2 (4x dist to Moon!)

R&D for New Instrument Techniques and Technologies

Adaptive Optics

Spectroscopy Techniques (eg Integral Field Spectroscopy, Photonic Fibres)

Precision Optical Manufacturing and Metrology

Remote Sensing (Hyperspectral Imaging form UAVs/Space)

Diagnostics for Fusion Plasmas (FusioN8, UKAEA)

Industrial/Commercial Spinoffs

Precision Optics Manufacture

Ophthalmic/Bio-Imaging

High Speed Camera Systems


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Astronomical InstrumentationAstronomical Instrumentation

LaserGuide Stars

&

Adaptive Optics

James Webb Space Telescope(launch 2013)

(with Surrey Satellite

Technology Ltd and Mullard

Space Science Laboratory)

European Southern Observatory


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FMOS Fibre SystemFMOS Fibre System


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RealReal--Time SystemsTime Systems

Real-time control systems

Currently using FPGAs

Investigating cell processors

AO performance modelling

Cray XD1 supercomputer

6 dual Opteron processing nodes

High bandwidth interconnect

switching fabric (1Tb/s)

6 Virtex 2 Pro FPGAs (application

acceleration)

each with direct memory access


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Machining Capabilities

2 x 5-Axis Diamond Turning Machines (X,Y, Z, B, C)

2 x 3-Axis Diamond Turning Machines (X, Z, C)

2 x Fast Tool Servo Systems

High Speed (60,000rpm) Milling Spindle

15,000rpm Mini-Milling Spindle

All Machines have air conditioned thermal control

( 0.05C)

Multi-Stage Cleaning System(contained in better than class 10,000 clean tent)

2-stage ultrasonic pre-clean

Pulsed variable frequency deep clean

Vapour Bath/ Hot Air Drying

Precision Optics LabPrecision Optics Lab


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Measurement/Metrology Capabilities

3 x Phase Shifting Interferometers (Fisba)

Non-Contact Profilometer (Taylor Hobson)

Talysurf Aspheric Profiler (Taylor Hobson)

White Light Interferometer (Zygo)

Microscope (up to x1,000) with Digitising Software (Nikon)

Coordinate Measuring Machine (Mitutoyo )

Various Optical Benches and General Optical Test Equipment

Portable Clean Tents (class 10,000)

Metrology LabMetrology Lab


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Precision Optics & MicrostructuresPrecision Optics & Microstructures

Precision OpticsManufacture

Metrology and

Testing

Freeform

Multi-facetedMetal Optics

Diffractive

Microstructures

2x Nanotech 350FG

(5-axis)

2x Nanotech 250FG

(3-axis)

Interferometry,

profilometry, surface

roughness, microscopy


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Applications/ProductsApplications/Products

Non-Ferrous Metal Optics (Al, Cu, NiP, Brass)

Aspheric and Freeform Optics

Infra Red Optics (Ge, Si, ZnSe)

Plastic Optics (PMMA, Acrylic, Zeonex, Polycarbonate)

Microstructured Surfaces (Diffractives, Fresnels, Structured

Drums)

Microlens Arrays (Micro-milled or FTS)

Monolithic Faceted Optics (Raster Flycutting)

Symmetric and Non-Axi Symmetric Diffractives (FTS and Slow

Slide) Contact: [email protected]


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Non-Spherical Optic

Off-axis configuratio

Machined into singlepiece of material

by raster fly-cutting

Form Error


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Solar concentratorsreplicated onto thinplastic film

Manufactured withv-groove diamondtool machined intoNiP plated drum

Tool rotated toprovide variablefacet angles

Structure depthtypically 30-35microns

Linear Solar

Concentrators

Application - Micro-structured Surfaces

Pyramidal Structures

Manufactured by raster fly-

cutting structure with a v-

groove diamond tool.

Structures typically 10-50Qm

deep.

3 and 4 sided structures

possible also tilted pyramids.


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Other Testing Capabilities

Clean Room (Class 1,000 with Class 100 area)

Cryogenic Test Facilities (temperatures to


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CfAI Precision EngineeringCfAI Precision Engineering


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Endof PresentationEndofPresentation

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Presentation - Telescopes - CfAI, Durham University - Ray Sharples