Prototyping Fiber Cable / ファイバーケーブル試作

In PFS observations, photons from the sky are fed into the optical fibers from one end on the Subaru prime focus, and are emitted out from the other end to feed the spectrograph. The prime focus and spectrograph are physically remote from each other, so the total length of the fibers that optically link them has to be approx. 60… Read more »

Spectrograph Integration & Test at LAM / マルセイユ天文台での活動:分光器の組み上げ試験

Among the PFS instrument subsystem, four spectrographs are developed under the leadership of LAM (Laboratoire d’Astrophysique de Marseille). Since 2015, the first spectrograph module has been integrated and tested for its performance. In this article, we’ll talk about integration and test activities at LAM. Below photo shows the Visible-Red camera unit under assembly: optical components were accommodated in the cryostat… Read more »

Review meeting of infrastructures for controling the PFS instruments / PFS装置制御設備の審査会議

Subaru Telescope and its instrument are, like those at many other observatories, controlled by operator and observer sitting in front of computers at the control room in the building next to the telescope enclosure. In some cases, they are operated even from the National Observatory of Japan in Mitaka, Tokyo. PFS is not a single-component instrument but an integration of… Read more »

Metrology Camera System integration is progressing in Taiwan/ 台湾でメトロロジカメラシステム組み上げ進行中

Metrology Camera System to measure the positions of the fibers on the Subaru prime focus is being developed by ASIAA (Academia Sinica Institute of Astronomy and Astrophysics) , in Taiwan. After the success of the critical design review in 2015, the parts production and system integration are progressing, and all the mechanical parts have been manufactured. The photo below shows some of them…. Read more »

Installation of Spectrographs Clean Room Crane / 分光器設置室用クレーン設置

The integration of the Spectrographs Clean Room has been progressing at the Subaru Telescope observatory since last May, when the floor of the dome building was cleaned up. Recently, a crane has been installed to the ceiling structure of the spectrograph floor. This 500kg-capacity crane will be used to carry the individual components and sub-assemblies of the spectrograph module such… Read more »

First light at lab.! / 実験室ファーストライト!

The PFS Spectrographs  are integrated and validated their performances at Laboratoire d’Astrophysique de Marseille (LAM), France. At present, the first spectroraph module is being assembled,  tested for the performance of individual parts. Last month, we had the First Light of the visible-red camera in the laboratory. The below is the first light image, in which you can see many spectra… Read more »

8th PFS Collaborations Meeting / 第8回PFSコラボレーションミーティング

We are pleased to report the 8th PFS Collaborations meeting at Johns Hopkins University (JHU), Baltimore, USA, from 12th to 16th December 2016, with about 80 participants from various PFS institutions. During the week, we had 2-day all-hands session, where we shared progress reports in the instrument development and survey planning study after the last collaboration meeting, and discussed plans and… Read more »

From the development site of Prime Focus Instrument / 主焦点装置製作の開発現場から…

Let us start with a question this time: What do you think these parts are used for? There are a number of holes… They are some of the parts for Prime Focus Instrument (PFI) named as the “Cobra bench” and the “rails”, on which the fiber positioning actuators Cobra are installed (Here for details). As a picture below, one actuator… Read more »

Software collaboration meeting / ソフトウェアコラボレーション会議

PFS software collaboration meeting was held at Princeton University (USA) on 5th and 6th September. About 30 people — not only PFS members for software development, but also several staffs and software engineers from the Subaru Telescope observatory to which PFS will be delivered, and those from National Astronomical Observatory of Japan working on the database system — got together… Read more »

Announcement of Japanese TV program / コズミックフロント☆NEXTですみれ計画とPFSが登場します!

9月8日(木)22:00からHNK、BSプレミアムで放送される『コズミックフロント☆NEXT』にすみれ計画とPFSが登場します。 番組のテーマはダークエネルギー。 宇宙の来し方・行く末にとってどんな存在なのでしょうか。ダークエネルギーと宇宙の関係を突き止めるために「すみれ計画」が発足し、その両翼を担う観測装置として現在すばる望遠鏡で大活躍している超広視野カメラHSC (Hyper Suprime-Cam) と、同じくすばる望遠鏡の次期主力装置として開発が進められている超広視野多天体分光器PFS (Prime Focus Spectrograph) があります。 番組ではダークエネルギー正体に迫るとともに、すみれ計画やPFS についても紹介される予定です。 是非ご覧ください!! コズミックフロント☆NEXTのwebサイト