Design of the ULTRASAT UV camera

Arooj Asif, Merlin Barschke, Benjamin Bastian-Querner, David Berge, Rolf Buhler, Nicola De Simone, Gianluca Giavitto, Juan M. Haces Crespo, Nirmal Kaipachery, Marek Kowalski, Shrinivasrao R. Kulkarni, Daniel Kusters, Sebastian Philipp, Heike Prokoph, Julian Schliwinski, Mikhail Vasilev, Jason J. Watson, Steven Worm, Francesco Zappon, Shay AlfassiSagi Ben-Ami, Adi Birman, Kasey Boggs, Greg Bredthauer, Amos Fenigstein, Avishay Gal-Yam, Dmitri Ivanov, Omer Katz, Ofer Lapid, Tuvia Liran, Ehud Netzer, Eran O. Ofek, Shirly Regev, Yossi Shvartzvald, Joseph Tufts, Dmitry Veinger, Eli Waxman

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

The Ultraviolet Transient Astronomical Satellite (ULTRASAT) is a scientific UV space telescope that will operate in geostationary orbit. The mission, targeted to launch in 2024, is led by the Weizmann Institute of Science (WIS) in Israel and the Israel Space Agency (ISA). Deutsches Elektronen Synchrotron (DESY) in Germany is tasked with the development of the UV-sensitive camera at the heart of the telescope. The cameras total sensitive area of ≈90mm x 90mm is built up by four back-side illuminated CMOS sensors, which image a field of view of ≈200 deg2. Each sensor has 22:4 megapixels. The Schmidt design of the telescope locates the detector inside the optical path, limiting the overall size of the assembly. As a result, the readout electronics is located in a remote unit outside the telescope. The short focal length of the telescope requires an accurate positioning of the sensors within ±50 μm along the optical axis, with a flatness of ±10 μm. While the telescope will be at around 295K during operations, the sensors are required to be cooled to 200K for dark current reduction. At the same time, the ability to heat the sensors to 343K is required for decontamination. In this paper, we present the preliminary design of the UV sensitive ULTRASAT camera.

Original languageEnglish
Title of host publicationUV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXII
EditorsOswald H. Siegmund
PublisherSPIE
ISBN (Electronic)9781510644809
DOIs
StatePublished - 2021
Externally publishedYes
EventUV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXII 2021 - San Diego, United States
Duration: 1 Aug 20215 Aug 2021

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11821
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceUV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXII 2021
Country/TerritoryUnited States
CitySan Diego
Period1/08/215/08/21

Bibliographical note

Funding Information:
The following grant information was disclosed by the authors: Guizhou Province Science and Technology Innovation Talent Team Project: [2021]004. Guizhou Provincial Department of Education Youth Science and Technology Talents Growth Project: [2018]103. Introducing Talent Research Program for Guizhou University: [2016]70. National Nature Science Foundation of Guizhou University Cultivating Program: [2017] 5788-32. Graduate Innovation Fund, Guizhou Province, China: [2019]023.

Funding Information:
This research was supported by the Guizhou Province Science and Technology Innovation Talent Team Project (No. Qian Ke He Pingtai Rencai – CXTD [2021]004), the Guizhou Provincial Department of Education Youth Science and Technology Talents Growth Project (No. Qian Jiao He KY word [2018]103), the Introducing Talent Research Program for Guizhou University (No. Gui Da Ren Ji He word [2016]70); the National Nature Science Foundation of Guizhou University Cultivating Program (No. Qian Ke He Platform Talent [2017]5788-32), and the Graduate Innovation Fund, Guizhou Province, China (No. Qianjiaohe YJSCXJH [2019]023). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

Publisher Copyright:
© COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

Keywords

  • CMOS
  • Ultraviolet
  • gravitational waves
  • mosaic assembly
  • satellite
  • space telescope
  • super novae
  • survey
  • wide-field camera

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