Skip navigation
  • INAF logo
  • Home
  • Communities
    & Collections
  • Research outputs
  • Researchers
  • Organization units
  • Projects
  • Explore by
    • Research outputs
    • Researchers
    • Organization units
    • Projects
  • Login:
    • My DSpace
    • Receive email
      updates
    • Edit Account details
  • Italian
  • English

  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 3 CONTRIBUTI IN ATTI DI CONVEGNO (Proceedings)
  4. 3.01 Contributi in Atti di convegno
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/28169
Title: Thermal and mechanical design and test of the CCD mount for the WEAVE spectrograph cryostats
Authors: Bates, Stuart D.
Steele, Iain A.
Mottram, Chris J.
Jermak, Helen E.
Tromp, Niels
Kragt, Jan
Elswijk, Eddy
Pragt, Johan
Stuik, Remko
Barnsley, Robert
Monroe, Charles
Dalton, Gavin
Trager, Scott
Lopez Aguerri, Jose Alfonso
BONIFACIO, PIERCARLO
VALLENARI, Antonella 
Carrasco, Esperanza
Abrams, Don Carlos
Middleton, Kevin
Issue Date: 2018
Volume: High Energy, Optical, and Infrared Detectors for Astronomy VIII
Editors: Holland, Andrew D.; Beletic, James
Series: PROCEEDINGS OF SPIE 
Number: 10709
First Page: 107091Z
Abstract: WEAVE is the new multi-object spectrograph for the William Herschel Telescope on La Palma. The culmination of prime focus, the large number of fibers and the wide resolution range has required a stringent optical design, which in turn demands a spectrograph with tight positional tolerances and large final focal plane. To capture this focal plane each of the two cryostats has two e2v 6k × 6k CCDs mounted as a mosaic. As well as being cooled to 150K via liquid nitrogen, the positional tolerances for the sensitive areas are flatness 60μm p-v over the entire image area, rotation around X and Y axis +/-50 arcmin, translation in X, Y and Z +/- 50 micron. We have used a Stil confocal measuring head mounted on two Thorlab translation stages to create a X,Y mount, controlled by a Raspberry Pi that is capable of recording measurements in Z to better than 1μm accuracy. This is used to measure the flatness and deformation of the image area under vacuum, and when cooled to 150K and the overall tip and tilt of the image plane to ensure they meet specification and are repeatable. In addition to this measuring system, we use a Thorlabs CMOS camera with a Navitar 50mm lens to ensure each CCDs image area is within specification with regards X and Y translation. In order to satisfy the above requirements, we designed the CCD mount to be adjustable (on initial setup), correctly constrained, isolated from liquid nitrogen boil-off vibration, and thermally insulating.
Conference Name: High Energy, Optical, and Infrared Detectors for Astronomy VIII
Conference Place: Austin, Texas, United States
Conference Date: 10-15 June, 2018
URI: http://hdl.handle.net/20.500.12386/28169
URL: https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10709/2312496/Thermal-and-mechanical-design-and-test-of-the-CCD-mount/10.1117/12.2312496.short
ISSN: 0277-786X
ISBN: 9781510619722
DOI: 10.1117/12.2312496
Bibcode ADS: 2018SPIE10709E..1ZB
Fulltext: open
Appears in Collections:3.01 Contributi in Atti di convegno

Files in This Item:
File Description SizeFormat 
SPIE107040W.pdfPdf editoriale1.33 MBAdobe PDFView/Open
Show full item record

Page view(s)

6
checked on Jan 17, 2021

Download(s)

2
checked on Jan 17, 2021

Google ScholarTM

Check

Altmetric


Items in DSpace are published in Open Access, unless otherwise indicated.


Explore by
  • Communities
    & Collections
  • Research outputs
  • Researchers
  • Organization units
  • Projects

Informazioni e guide per autori

https://openaccess-info.inaf.it: tutte le informazioni sull'accesso aperto in INAF

Come si inserisce un prodotto: le guide a OA@INAF

La Policy INAF sull'accesso aperto

Documenti e modelli scaricabili

Feedback
Built with DSpace-CRIS - Extension maintained and optimized by Logo 4SCIENCE