IDOM IN ASTRONOMY

www.idom.com / adaada@idom.com+34 944 797 676

CONTACT DETAILS FOR ASTRONOMY PROJECTS:

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E-ELT TRAVEL

ATST TRAVEL

IDOM GENERAL

TELESCOPE ENCLOSURES

TELESCOPE SYSTEMS

INSTRUMENTATION

IDOM

OFFICESPROJECTS

IDOM IS A MULTIDISCIPLINARY ENGINEERING COMPANY WHICH PROVIDES ADVANCED ENGINEERING AND TURNKEY SOLUTIONS FOR CHALLENGING PROJECTS INVOLVING APPLIED MECHANICS, STRUCTURAL DESIGN, ELECTRONICS & CONTROL.

IDOM ADA leads the company activity in technologically advanced projects and, as such, in Astronomy.

Our portfolio of clients and collaborators include ESO, AURA, IAC, GTC, EHU-UPV, SNS/ORNL, GANIL, ESS-Bilbao, ESS, F4E / ITER, CENER, Clemson University, NaREC, Fraunhofer Institute and others.

We offer full project engineering and complete procurement, manufacturing/construction and commissioning services.

www.idom.com/adaada@idom.com+34 944 797 676

IDOM IS PRESENT IN 34 OFFICES SPREAD OVER 16 COUNTRIES ACROSS 5 CONTINENTS.

More than 2300 professionals

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34 offices in 16 countries

Projects in more than 40 countries

Headquarters: Bilbao, Spain.

IDOM is an international firm specializing in Engineering, Architecture and Consulting. IDOM operates globally in areas such as power generation, oil & gas, renewable and alternative energies, manufacturing industry, civil infrastructures, nuclear plants, large technological and scientific facilities, architecture and unique challenging engineering projects.

AEC Engineering and Merebrook are fully integrated in IDOM Group.

IDOM GROUP: IN THE USA:

IN THE UK:

ATST ENCLOSURE

E-ELT ENCLOSURE

THE QUIJOTE PROJECT ENCLOSURE

4m

39m

700 t

3.500t

3,052m

3,064m

2012

2013

AURA

ESO

Haleakalā High Altitude Observatory(Maui, Hawai’i)

Cerro Armazones (Chile)

26m

89m

“The Advanced Technology Solar Telescope (ATST) is a 4-m facility that will have broad impacts on astronomy, plasma physics, and solar-terrestial relations” (from http://atst.nso.edu/)

Its enclosure is about 72ft [22m] high and 87 ft [26.6m] in diameter, and provides the ATST with an unobstructed field of view during observation, while preventing direct solar radiation on components other than the primary mirror (M1). The rotating enclosure will be mounted on top of a lower fixed Support and Operations Building at a height of 63.4 ft [19.3m], which results on an overall height of 136 ft [41.4m].

With a 39-m diameter primary mirror, the E-ELT will be the largest optical/infrared telescope in the world. The concept for the Enclosure adopted as baseline by ESO in 2008 was developed by IDOM in close collaboration with ESO E-ELT team. IDOM then performed the integral detail design of the enclosure in the frame of a FEED Study in 2009-2011.

The E-ELT enclosure is a spherical dome tightly fitted to the telescope, so that the outer surface, the enclosed volume and consequently its overall cost are minimized. A thorough study of different alternatives -which included structural assessments, coupled analyses of the control and dynamics of the system, study of air and temperature turbulence around the telescope and cost trade-offs- led to the selection of a bi-parting horizontal doors solution for the huge slit that is needed for observation.

IDOM participates in the scientific collaboration for the QUIJOTE (Q U I Joint TEide) CMB Experiment. IDOM designed and supervised the construction of the Enclosure. (IDOM also designed, manufactured, assembled and helped commission the first telescope; and participated in the integration and testing of the first instrument for the QUIJOTE Project).

The QUIJOTE Enclosure aim is to host and protect the two telescopes of the Experiment. It has a moveable vaulted fully retractable roof to allow observation of the telescopes.

See also,

-Bilbao, A. et al., “E-ELT Dome for Modified Baseline Design” Proc. SPIE 8444 (2012)-Murga, G. et al., “Detail design and construction plans for a dome for the European Extremely Large Telescope (E-ELT)”, Proc. SPIE 7733 (2010)

-Murga, G. et al., “Preliminary design for an enclosure for the European Extremely Large Telescope”, Proc. SPIE 7012 (2008)

See also,

-Murga, G. et al., “ATST Enclosure final design and construction plans” Proc. SPIE 8444 (2012)

-Murga, G. et al., “ATST enclosure mechanical and thermal models,” Proc SPIE 8336 (2011)

ATST ENCLOSURE IN NUMBERS

E-ELT ENCLOSURE IN NUMBERS

Telescope Aperture

Telescope Aperture

Weight

Weight: 3.500 t rotating part weight + 6.050 m3 foundations concrete volume

Altitude ( a.s.l)

Altitude (a.s.l)

Start of Construction

Start of Construction

Client

Client

Site

Site

Approx. diameter

Approx. diameter

The design developed by IDOM is based on a multi-sector Shutter System arrangement, which is driven by an innovative crawler mechanism (patent pending), that provides a compact and robust solution, while reducing the power needed to move the shutters.

The outer shape of the enclosure has been defined so as to minimize the solar irradiated surface in early morning hours, when the seeing is optimal. The enclosure has an outer skin composed of water cooled plate coils for efficient thermal control of the enclosure skin.

After successfully finishing the Preliminary and Detail Design phases, IDOM is currently Manufacturing the complete rotating enclosure.

The azimuth system is composed of 54 equal bogies attached to the fixed part -thus drastically reducing the need of power supply to the rotating part- and equipped with a hydraulic load equalization system. Other distinctive features include ad-hoc solutions for the seismic isolation, the windscreen, the enclosure main crane and the doors latching system, among others. Main design criteria were robustness and reliability of the proposed solutions.

IDOM has developed comprehensive construction, logistics, operation and maintenance studies, with special attention to the interfaces with the Telescope.

The Enclosure was erected in the Teide Observatory (Tenerife, Spain) and its construction, including the installation and commissioning of the mechanisms for its aperture, concluded in 2011. Recently the first telescope has been installed inside.

TELESCOPEENCLOSURESIDOM HAS FULLY DEVELOPED THE ENCLOSURES OF SOME OF THE MOST CHALLENGING TELESCOPES THAT ARE CURRENTLY UNDERWAY. THIS INCLUDES CONCRETE AND STEEL STRUCTURES, ALL THE MECHANISMS, HANDLING AND OTHER AUXILIARY EQUIPMENT, CLADDING AND THERMAL CONTROL SYSTEMS, ANCILLARIES, AND CONTROL SYSTEMS.

FIRST TELESCOPE OF THE QUIJOTE CMB EXPERIMENT

FOLDED CASSEGRAIN SETS FOR THE GRAN TELESCOPIO CANARIAS (GTC)

Led by the Instituo de Astrofísica de Canarias (IAC), the QUIJOTE (Q-U-I JOint TEnerife) CMB Experiment is a collaborative effort of several European Institutions: IAC, IFCA, DICOM, the Jodrell Bank Observatory, the Cavendish Laboratory and IDOM. The aim of the Experiment is to measure the polarization of the Cosmic Microwave Background in the frequency range between 11GHz and 30GHz at angular scales of 1°.

Two telescopes/antennas and 3 instruments are planned for the Experiment. IDOM designed and manufactured the first telescope, which was delivered to the Astrophysics Institute of the Canary Islands (IAC, Instituto Astrofísico de Canarias), in July 2009.

The GTC FC-Sets are multipurpose systems that include, 1) an Instrument Rotator, to rotate science instruments up to 1-tonne while observing, in order to compensate the field rotation caused by the alt-azimuth mount of the telescope, 2) a Cable Rotator to transfer supplies to the science instrument and 3) the Acquisition and Guiding (AG) and Wavefront Sensing (WS) System, for accurate guiding of the telescope during the observation.

The conceptual design of the system was driven by the need for integration, reduced weight and minimum impact on the telescope tube.

See also,

-Gómez, A. et al, “QUIJOTE telescope designand fabrication”, Proc. SPIE, Volume 7733(2010)

This first telescope features a Gregorian Dragon optical system, with a 2.25 m diameter aperture. Both the primary and secondary mirrors were manufactured in cast aluminum, and then machined and polished to achieve the required geometry and surface finishing. The telescope has an alt-azimuth mount, with a nominal azimuth spinning rate of 15rpm. Supplies to the rotating parts of the telescope and to the instrument are transferred through a rotating joint. These include electric power, fiber optics for control, and compressed helium for the instrument cooling system.

After implementing and testing the control system, the telescope has recently been installed in the Teide Observatory, equipped with an instrument with 5 rotating cryogenic polarimeters.

IDOM developed a customized design, based on a compact layout of the mechanical system and enhanced by an innovative cable wrap design. As a result, the FC-Sets perform with smooth and precise movement, whilst guaranteeing good access to important components and maximizing the maintainability.

The two units manufactured by IDOM successfully passed a comprehensive set of Factory Acceptance Tests and were delivered to the Roque de los Muchachos Observatory by the end of 2011, where the Site Acceptance Test were completed in February 2012.

IDOM DEVELOPS AND SUPPLIES COMPLETE TELESCOPE SYSTEMS TO ASTRONOMICAL OBSERVATORIES. CUSTOMIZED DESIGNS ARE PRODUCED FOR AN OPTIMUM FULFILLMENT OF TECHNICAL, SCHEDULE AND BUDGETARY NEEDS OF THE PROJECT.

1,250kg

2,396m 2012

GRANTECAN

GTC. Observatorio del Roque de los Muchachos (Spain)

2mGTC FOLDED CASSEGRAIN SETS IN NUMBERS

Weight

Altitude ( a.s.l) Delivery

Client Site

Approx. diameter

TELESCOPESYSTEMS

See also,

-Gómez, A. et al, “Folded Cassegrain Sets of the Gran Telescopio Canarias (GTC)”, Proc. SPIE 8444 (2012))

7,000kg

2,390m 2009

IAC INSTITUTO DE ASTROFÍSICA DE CANARIAS

Observatorio del Teide (Spain)

2,25mQUIJOTE CMB EXPERI-MENT TELESCOPE IN NUMBERS

Weight

Altitude ( a.s.l) Delivery

Client

Site

Telescope aperture

THE QUIJOTE CMB EXPERIMENT FIRST INSTRUMENT

PLANETCAM AND FASTCAM

Multifrequencymicrowave detector

2010 Observatorio del Teide (Spain)Quijote CMB Telescope

10 - 30 GHz

The first instrument to be installed in the QUIJOTE CMB Experiment first antenna is a multi-channel instrument with five separate polarimeters (providing 5 independent sky pixels): two which operate at 10-14 GHz, two which operate at 16-20 GHz, and a central polarimeter at 30 GHz.

The optical arrangement includes 5 conical corrugated feedhorns staring into a dual reflector crossed-dragonian system, which provides optimal cross-polarization properties and symmetric beams. Each horn feeds a novel cryogenic on-axis rotating polar modulator.

PlanetCam and FastCam are state-of-the-art instruments for 1-4m class telescopes, in which images are acquired and processed using the “lucky imaging” technique. Several thousand images of the same object are obtained in a short time interval, co-registered and ordered in terms of image quality, in order to reconstruct a high-resolution, ideally diffraction-limited image of the object.

PlanetCam, a project of the Planetary Science Group of the University of the Basque Country, is a two-channel fast-acquisition and low-noise camera designed for a multispectral study of the atmospheres of the planets (Venus, Mars, Jupiter, Saturn, Uranus and Neptune) and some satellites (Titan) at high temporal and spatial resolutions simultaneously in visible (0.4-1 µm) and NIR (1-2.5 µm) channels.

See also,

-Hoyland R. et al., “The status of the QUIJOTE multifrequency instrument”, Proc. SPIE 8452 (2012)

QUIJOTE CMB INSTRUMENTIN NUMBERS

Type

Delivery

Client

Telescope

Frequency Range

This optical arrangement was one of the most demanding features of the instrument, which required careful analysis and particular engineering solutions for the motor stator and rotor arrangement, materials for rotating parts, etc., aimed to minimize generated heat and thus foster cryogenic cooling efficiency.

The orthogonal linear polar signals are separated through a wide-band cryogenic Ortho-Mode-Transducer (OMT) before being amplified through two similar LNAs.

IDOM performed the integration of the system and carried out thorough functional tests (including mechanics, vacuum and cryogenics) for each of the polarimeters and the whole instrument at its laboratories in Bilbao, prior to delivering the instrument to the IAC.

FastCam is an instrument jointly developed by the Instituto de Astrofísica de Canarias (IAC) and the Universidad Politécnica de Cartagena (UPCT), designed to obtain high spatial resolution images in the optical wavelength range from ground-based telescopes . The instrument is equipped with a very low noise and very fast readout speed EMCCD camera and is capable of reaching the diffraction limit medium-sized telescopes from 500 to 850 nm.

IDOM provides robust designs that ensure the required mechanical and thermal stability, and the optical performance of the instruments.

IDOM IS ACTIVE IN THE DESIGN AND FABRICATION OF SCIENCE INSTRUMENTS FOR ASTRONOMY. BASED ON A CLOSE COLLABORATION WITH THE SCIENTIFIC TEAM FROM EARLY STAGES OF THE PROJECT, WE DESIGN, MANUFACTURE, ASSEMBLE AND COMMISSION COMPLETE OPTO-MECHANICAL SYSTEMS.

PLANET CAM VIS ARM IN NUMBERS

FASTCAM IN NUMBERS

INSTRUMENTATION

See also,

-Murga G. et al., “FastCam optomechanical system design and manufacture”, Proc. SPIE 7735 (2010)

See also,

-Sánchez A. et al, “PlanetCam UPV/EHU: A simultaneous visible and near infrared lucky-imaging camera to study Solar System objects”, Proc. SPIE 8446 (2012)

IAC INSTITUTO DE ASTROFÍSICA DE CANARIAS

Lucky Imaging Camera

Lucky Imaging Camera

2012

2010

1.23m. Observatoriode Calar Alto (Spain)

Observatorio del Teide (Spain)

400-1000nm

400-1000nm

Type

Type

Delivery

Delivery

Client

Client

Telescope

Telescope

Wavelength Range

Wavelength Range

UPV GRUPO DE CIENCIAS PLANETARIAS

IAC INSTITUTO DE ASTROFÍSICA DE CANARIAS Telescopio Carlos Sánchez (TCS)