Speaker
Description
The Nobeyama 45-m radio telescope, located at an altitude of 1,400 m in Nagano, Japan, has been a world-leading facility for millimeter-wave astronomy since 1982. Its large aperture provides high spatial resolution ($\sim$15$''$ at 110~GHz), while the four-beam FOREST receiver enables efficient wide-area mapping across 86--116 GHz. Several large survey programs have been conducted with this instrument (e.g., FUGIN; Umemoto et al. 2017). In addition to FOREST, the Z45 receiver enables magnetic field studies through Zeeman polarimetry. H22 and H40 receivers can be used to observe the 22 GHz and 40 GHz bands, respectively. New instruments are also under development: HINOTORI will enable simultaneous observations at 22, 40, and 86 GHz by implementing frequency-separation filters in the beam transmission system, allowing simultaneous use of H22, H40, and the TZ receiver, which is a SIS receiver capable of observing the 86 GHz band. 7-BEE, a seven-beam successor to FOREST, is being prepared for open use. As of April 2026, we have initiated three new receiver development projects supported by new grants. The first is the development of a 150~GHz receiver based on MMIC-SIS technology. The second is a 230 GHz receiver to be combined with the BHEX satellite project. The third is an extension of HINOTORI by incorporating an additional frequency-separation filter to enable observations up to the 230 GHz band. Observing time is available to the international community at a rate of 33,000 JPY per hour (including tax), without scientific proposal screening. In this poster, we present the current status of the Nobeyama 45-m telescope, including outreach activities and future plans.
| Participate the oral/poster presentation award competition | No |
|---|