Author Archives: PFS Project

News about activities of Spectrograph integration

      Comments Off on News about activities of Spectrograph integration

At Laboratoire d’Astrophysique de Marseille (LAM), integration of the second and the third Spectrograph Modules is on-going. We are talking about the recent activities in this post. PFS project is developing four spectrograph modules to observe about 2400 objects simultaneously. We designed the system for each module to evenly cover the field of view on the telescope’s prime focal plane… Read more »

Prime Focus Instrument has arrived at Subaru Telescope

      Comments Off on Prime Focus Instrument has arrived at Subaru Telescope

Time flies and a half of 2021 has already passed. Earlier this year, the first fiber cable unit and the miniature telescope for night sky study “SuNSS” was installed on Subaru telescope. In this article, we report a big news of our project. Finally the Prime Focus Instrument has delivered from Taiwan to Subaru Telescope in June 2021!! Prime Focus… Read more »

Obituary: Prof. Naruhisa Takato

      Comments Off on Obituary: Prof. Naruhisa Takato

Professor Naruhisa Takato passed away on May 14, 2021. He got ill on April 24 while he was staying in Taichung to participate in the final phase of integration and test of Prime Focus Instrument (PFI) of the PFS instrument. An emergency surgery was operated on the same day and then he was under intensive cares, but he never returned…. Read more »

PFS spectrograph observed sky spectra!

      Comments Off on PFS spectrograph observed sky spectra!

As shown in the last article, the first fiber cable unit was installed on the Subaru telescope. In fact, in the same period, we have installed another instrument — a miniature telescope called “SuNSS” to study sky spectra at Mt. Maunakea. Since night-sky emission originates from the atmosphere, any spectra observed by ground-based telescopes contain sky component as a noise…. Read more »

The first fiber cable unit has arrived in Hawaii!

      Comments Off on The first fiber cable unit has arrived in Hawaii!

Time flies — there are only a few days left in 2020. The last post of this year is about a very exciting news! The first unit of the fiber cable system has been delivered from Laboratório Nacional de Astrofísica (LNA), Brazil, to Hawaii Observatory of National Astronomical Observatory of Japan (NAOJ) in Hawaii, the USA. PFS is the fiber… Read more »

Final assembly of the fiber cables in the Prime Focus Instrument is progressing

      Comments Off on Final assembly of the fiber cables in the Prime Focus Instrument is progressing

Having only a month or so left in 2020, the integration of the Prime Focus Instrument (PFS) is progressing in Taiwan. The integration and test of the PFI system are being carried out by ASIAA (Academia Sinica Institute of Astronomy and Astrophysics) and their partner institute ASRD of CSIST (Aeronautical Systems Research Division of Chung-Shan Institute of Science and Technology). Back in… Read more »

SpS development is progressing

      Comments Off on SpS development is progressing

This post shows recent activities for the development of the PFS Spectrograph modules. PFS project develops 4 identical Spectrograph Modules to obtain 2400 spectra in a singe exposure. Integration of the second and third Spectrograph Modules are on-going at Laboratoire d’Astrophysique de Marseille (LAM) in France. As shown in the previous post, almost all units and assemblies had been delivered… Read more »

PFS on-line collaboration meeting

      Comments Off on PFS on-line collaboration meeting

We had a collaboration meeting using the Zoom online meeting system on 16 and 17 September 2020. About 160 people participated in the meeting: colleagues from the PFS participant institutions, as well as Japanese researchers who are interested in the PF project. Since the PFS participant institutions locate in 6 countries (in 8 time zone), some had the meeting late… Read more »

Calibration lamp system was delivered to Taiwan

      No Comments on Calibration lamp system was delivered to Taiwan

The PFS project researches astronomical objects taking their spectra. Spectrograph modules take spectral images of our targets, and “(Wavelength) calibration lamp” is essential to process the raw images and get the spectra. Recently, Princeton University completed the assembly and test of the calibration lamp system, and shipped it to Taiwan. PFS develops 4 spectrograph modules to obtain about 2400 spectra… Read more »

Optics for the 3rd Spectrograph Module were delivered.

      Comments Off on Optics for the 3rd Spectrograph Module were delivered.

We have a news from Marseilles in France in the middle of summer. PFS uses 4 identical spectrograph modules to obtain about 2400 spectra from astronomical objects. Development of the spectrograph modules are led by Laboratoire d’Astrophysique de Marseille (LAM), and production of the optical systems such as lenses are going on by their partner, Winlight.Two sets of the PFS… Read more »