ANIR: Infrared-optical simultaneous imager for miniTAO 1m telescope at an altitude of 5640m

Kentaro Motohara, Masahiro Konishi, Natsuko Mitani, Shigeyuki Sako, Yuka K. Uchimoto, Koji Toshikawa, Ryou Ohsawa, Tomoyasu Yamamuro, Takeo Minezaki, Toshihiko Tanabe, Takashi Miyata, Shintaro Koshida, Daisuke Kato, Tomohiko Nakamura, Kentaro Asano, Yuzuru Yoshii, Mamoru Doi, Kotaro Kohno, Masuo Tanaka, Kimiaki KawaraToshihiro Handa, Tsutomu Aoki, Takao Soyano, Ken'ichi Tarusawa, Yoshifusa Ita, Hideyuki Umeda

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


Early follow-up observations of gamma-ray bursts (GRBs) in wide wavelength range, especially from the optical to the near infrared (NIR) bands, are crucial for search of high-redshift GRBs by detecting their Lyman limit break. For this purpose, we have developed a NIR/optical simultaneous imager called ANIR (Atacama Near InfraRed camera) for the University of Tokyo Atacama 1.0m telescope. Installed at the summit of Co. Chajnantor (5640m altitude) in northern Chile, this telescope is the world's highest optical/NIR observatory. ANIR saw the first light in June 2009, and several observing runs have been carried out for performance verification as well as scientific observations. During the run, we have successfully detected an optical/NIR afterglow of GRB091018. Thanks to the excellent seeing (median ∼0". 8), 5σ limiting magnitudes reach 23.3, 20.6, and 20.8 mag(AB) in the B, J and Ks bands, respectively, with 600sec exposure.

Original languageEnglish
Title of host publicationDeciphering the Ancient Universe with Gamma-Ray Bursts
Number of pages3
Publication statusPublished - 2010
EventInternational Symposium "Deciphering the Ancient Universe with Gamma-Ray Bursts" - Kyoto, Japan
Duration: 2010 Apr 192010 Apr 23

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


ConferenceInternational Symposium "Deciphering the Ancient Universe with Gamma-Ray Bursts"


  • Atacama
  • Camera
  • Infrared
  • Instrument
  • Optical


Dive into the research topics of 'ANIR: Infrared-optical simultaneous imager for miniTAO 1m telescope at an altitude of 5640m'. Together they form a unique fingerprint.

Cite this