Aeroespacial

WHT: WEAVE Focus Translation System

Image Gallery
Prev Next
WHT Focus Traslation System WHT WEAVE Focus Translation System WHT WEAVE Focus Translation System WHT Focus Traslation System
WHT Focus Traslation System
WHT WEAVE Focus Translation System
WHT WEAVE Focus Translation System
WHT Focus Traslation System
  • Client: IAC
  • Country: Spain
  • Start date: 2015
  • Ending date: 2016
Download datasheet

WEAVE (WHT Enhanced Area Velocity Explorer) is a new wide-field spectrograph being developed for the 4.2-m William Herschel Telescope (WHT) located in the Observatorio del Roque de los Muchachos on the island of La Palma (Spain). The instrument includes a field corrector system with two degrees of freedom with a 1000-fiber positioning mechanism.

SENER has designed and implemented the Focus Translation System (FTS) for the William Herschel Telescope that makes it possible to make adjustments of ± 3 mm on the z-axis to the telescope’s focal plane, and rotate the telescope’s angle of elevation 0.015º in order to maintain the focal plane in position for the entire range of temperatures and elevation angles. Temperature changes cause focal misalignments due to the expansion of the Telescope’s structure, and elevation angle changes give rise to focal plane rotations due to WEAVE’s major decenter with regard to its anchoring and the bending of the Telescope’s structure.

The system is comprised of four actuators that permit Z-displacement that are connected to a system of radii that support the structure containing the WEAVE optical instrument. The instrument is not within the project’s scope.

SENER has also supplied the storage, maintenance and installation equipment for the corrector system and instrument.

  • Characteristics:
  • The Focus Translation System (FTS) is used to position the WEAVE instrument, which weighs about 5,000 kg, with a precision of 20 µm and a repetitiveness of 5 µm, keeping the instrument's decenter in the focal plane below 200 µm for any operating elevation angle.

Other programs

See all
Share
Share:
Contact Up Up
Manage cookies
Cookie configurator

A "cookie" is a small file that asks permission to be placed on your devices. Once the user has accepted, the file is added and helps analyze web traffic or allows you to detect when that user visits a particular Website.

Current law allows us to store cookies on your device, if these are strictly necessary for the operation of our web page, based on the legitimate interest of SENER GRUPO DE INGENIERÍA. Thus, for the rest of the cookies we need your consent, so below we inform you of the different types of cookies that we use in our Website.

SENER AEROESPACIAL uses its own and third party cookies to enable the operation of our page, obtain information on browsing and analyse the activity in this Website. You can accept and configure your preferences through this cookie notice, as well as obtain more information in our Cookies Policy.

Cookie settings Accept all and continue browsing
Your choice regarding cookies on this site

This website uses cookies and / or similar technologies that store and retrieve information when you browse. In general, these technologies can serve very diverse purposes, such as, for example, recognizing you as a user, obtaining information about your browsing habits, or customizing the way the content is displayed. The specific uses we make of these technologies are described below.

  • Necessary cookies

    Technical or necessary cookies: those strictly necessary for the correct functionality of SENER GRUPO DE INGENIERÍA’s Website. They cannot be deactivated as, without them, certain parts of the web may not be available.

     

    Necessary cookies

    Technical or necessary cookies: those strictly necessary for the correct functionality of SENER GRUPO DE INGENIERÍA’s Website. They cannot be deactivated as, without them, certain parts of the web may not be available.

    Show / hide full list
    Owner Name Purpose Type Length
    aeroespacial.sener group.sener - HTTP 1 year
    CWNWSESSION - HTTP Session
    prod-plat-senerv3.geanetondemand.com CWNWSESSION - HTTP Session
    prod-plat-senerv3.yunbit.es CWNWSESSION - HTTP Session
  • Statistical cookies

    Analysis and statistical cookies: they help to understand how visitors interact with the Website, by gathering and providing information in an anonymous way, such as visits and views on the Website. In addition, they allow us to identify technical problems and find ways to optimize it.

     

    Statistical cookies

    Analysis and statistical cookies: they help to understand how visitors interact with the Website, by gathering and providing information in an anonymous way, such as visits and views on the Website. In addition, they allow us to identify technical problems and find ways to optimize it.

    Show / hide full list
    Owner Name Purpose Type Length
    aeroespacial.sener _at.hist.# - HTML Persistent
    _ga - HTTP 2 years
    _gat - HTTP 1 day
    _gid - HTTP 1 day
    _pk_id# - HTTP 1 year
    _pk_ses# - HTTPS 1 day
    google-analytics.com collect - Pixel Session
    piwik.yunbit.es piwik.php - Pixel Session
  • Marketing cookies

    Marketing cookies: these are used to personalise SENER GRUPO DE INGENIERÍA’s Website and online store, showing personalised product recommendations or information to the user on this or other web sites.

    Marketing cookies

    Marketing cookies: these are used to personalise SENER GRUPO DE INGENIERÍA’s Website and online store, showing personalised product recommendations or information to the user on this or other web sites.

    Show / hide full list
    Owner Name Purpose Type Length
    aeroespacial.sener __atuvc - HTTP 1 year
    __atuvs - HTTP 1 day
    _at.cww - HTML Persistent
    at-lojson-cache-# - HTML Persistent
    linkedin.com bcookie - HTTP 2 years
    bscookie - HTTP 2 years
    lidc - HTTP 1 day
    lissc - HTTP 1 year
    youtube.com GPS - HTTP 1 day
    VISITOR_INFO1_LIVE - HTTP 179 days
    YSC - HTTP Session
    yt-remote-cast-installed - HTML Session
    yt-remote-connected-devices - HTML Persistent
    yt-remote-fast-check-period - HTML Session
    yt-remote-session-app - HTML Session
    yt-remote-session-name - HTML Session
    doubleclick.net IDE - HTTP 1 year
    test_cookie - HTTP 1 day
    addthis.com uvc - HTTP 1 year
    xtc - HTTP 1 year
Go back Save settings