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1m Telescope

Prior to the construction of the 6.5-m TAO telescope, we built a 1-m miniTAO telescope at the summit of Mt. Chajnantor to succeed the first light observation using an optical CCD camera for engineering in March 2009. Then, in June of the same year, we mounted the ANIR near-infrared camera on the 1-m telescope and succeeded to obtain the image toward the central region of the Milkey Way galaxy by the near-infrared hydrogen emission line of Paα (1.875µm) from the ground-based telescope for the first time. Furthermore, we mounted the MAX38 mid-infrared camera on the telescope in November of the same year, and we succeeded to carry out the observations in the wavelength of 38μm from the ground for the first time. We will continue to observe a wide variety of targets in the future.

ドーム内に組み上がった1m望遠鏡の様子 チャナントール山頂の様子
▲ The left picture shows the 1-m miniTAO telescope in the dome. The right picture shows the the summit of Mt. Chajnantor, and the white building in the right side is the dome of the 1-m telescope.

ANIR
(Atacama Near-InfraRed camera)

The near-infrared camera ANIR (Atacama Near-InfraRed camera) is mounted on the 1-m miniTAO telescope at the summit of Mt. Chajnantor, and is capable for simultaneous imaging in optical and near-infrared wavebands. The ANIR on the miniTAO telescope enables us to carry out the imaging observation using the near-infrared hydrogen emission line of Paα (1.875µm) that has been impossible from the ground-based telescopes. The Paα observation will unveil the true distribution of ionized gas in galaxies and resolve the mysteries of star formation. Moreover, the follow-up observation of afterglows of gamma-ray bursts will be carried out to explore the distant universe.

近赤外線カメラ ANIR
▲ The 1-m miniTAO telescope and the near-infrared camera ANIR. The black-colored structure is the telescope, and the structure below the red disk is the ANIR.

Mounted on the miniTAO telescope in June 2009, we succeeded to obtain the structure in the Galactic center revealed by the near-infrared hydrogen emission line of Paα (1.875µm) . This is the first observation of Paα emission line from the ground-based telescope.
http://www.ioa.s.u-tokyo.ac.jp/TAO/press/pressrelease20090702/top.html
http://www.s.u-tokyo.ac.jp/press/press-2009-15.html

More details for the ANIR are described below

MAX38
(Mid-infrared Astronomical eXplorer 38)

The mid-infrared camera MAX38 (Mid-infrared Astronomical eXplorer 38) is mounted on the 1-m miniTAO telescope at the summit of Mt. Chajnantor, and is capable for observation in thermal infrared wavelengths (20-30µm).

中間赤外線カメラ MAX38
▲ The 1-m miniTAO telescope and the mid-infrared camera MAX38. The structure below the red disk is the MAX38.

The atmospheric absorption in thermal mid-infrared is so strong that the observation from the ground-based telescopes has been impossible, however in November 2009, we succeeded the 38μm observation from the ground for the first time.
http://www.ioa.s.u-tokyo.ac.jp/TAO/press/pressrelease200912/top.html http://www.s.u-tokyo.ac.jp/press/press-2009-30.html

More details for the MAX38 are described below.