Author Archives: PFS Project

PFS Science Working Group Meeting at Princeton University / PFSサイエンスミーティング@プリンストン大学

The PFS Science Team has established a working group for each scientific objective and has vigorously discussed what interesting science cases are to exploit the strengths of PFS and how we optimize the survey observation accordingly (visit our past post and our official web site for more details about science objectives of the project). Based on these discussions we have developed an… Read more »

The prototype fiber cable has been installed on the telescope/ 試作ファイバーケーブルを望遠鏡に敷設

We reported that Metrology Camera System had been installed to the Subaru Telescope for the test. MCS, however, is not the only instrument for PFS to have been installed to the telescope. The prototype fiber cable was also routed on the telescope to test the optical performance about a half year ago. The work was done a little long time… Read more »

Fiber slit test done for the first spectrograph module / 分光器1台目のファイバースリット試験

In this article, we are going to show recent news at Laboratoire d’Astrophysique de Marseille (LAM, France), where the first PFS Spectrograph module is being integrated. The assemblies for the first spectrograph module, such as the visible-blue and red cameras, optical bench and optical components have been delivered to LAM, as we showed in the previous article. Since then, the fiber… Read more »

After the arrival of metrology camera at the Subaru telescope… / すばる望遠鏡到着後メトロロジカメラは…

Since we published the article about the delivery of the Metrology Camera System (MCS) to Subaru Telescope in May this year, the member mainly from ASIAA (Academia Sinica Institute of Astronomy and Astrophysics, Taiwan) have visited Subaru Telescope a few times, in order to finalize the integration and proceed the on-site tests. In this article, we are going to talk… Read more »

Presence of PFS at the SPIE conference / PFS プロジェクト@SPIE国際会議

On June 10-15 2018, there was the SPIE conference titled “Astronomical Telescope and Instrumentation” at Austin Convention Center, in Austin, Texas, USA. This is a big international conference of astronomical instrumentation held every two years. Hundreds of presentations are given about a wide range of topics across ground-based facilities, space missions, and R&D studies. Like many other projects did so… Read more »

First “Cobra” Module is under the Test in Taiwan / 最初のファイバー配置システム、台湾で試験中

To talk about this story, one should go back in time a little … Some time ago, the Metrology Camera System was shipped over the Pacific Ocean(from Taiwan to Hawaii).  In fact, around the same time, the first fiber positioner module was also shipped over the Pacific Ocean, from California to Taiwan. The PFS instrument catches the light from galaxies and… Read more »

Metrology Camera is at Subaru Telescope Now! / メトロロジカメラ、すばる望遠鏡へ到着

About one month has passed since Metrology Camera was shipped from Taiwan. Now it has arrived at Subaru Telescope at Maunakea in Hawaii. After shipping, from 23 April 2018, members from Academia Sinica, Institute of Astronomy and Astrophysics (ASIAA) visited to Hawaii Observatory of National Astronomical Observatory of Japan for final development. At Hilo base, ASIAA inspected Metrology Camera and… Read more »

Updates about Spectrograph Development / 分光器開発は今…

It has been about 3 months since the first blue camera cryostat was shipped to France. In this post, we are showing the updates on development of the Spectrograph systems. At Laboratorie d’Astorophysique de Marseille (LAM), we finished the performance test using only a red camera unit, and started fully integrating the first spectrograph module (called SM1). We have already… Read more »

Metrology Camera left Taiwan to Hawaii / メトロロジカメラがハワイに向けて台湾を出発しました

One of the PFS instrument “Metrology Camera” was finally shipped from Taiwan to Hawaii!! Metrology Camera  is an instrument used to measure the fibers position while we configure fibers to target objects. Academia Sinica Institute of Astronomy and Astrophysics (ASIAA) in Taiwan has the responsibility for Metrology Camera development, and they tested its performances before shipping in the last a… Read more »


PFSプロジェクト では装置の開発と共に、大規模サーベイ観測提案書の検討も進めてきています。観測提案書は宇宙論、銀河進化、銀河考古学の3つを柱としており、ワークショップや外部研究者の書評も得ながら推敲を重ねてきています。この観測提案書には日本中の宇宙物理・天文学分野の研究者が参加することができます。観測成果を最大限にするために日本研究者の積極的な参加を呼び掛けています。 「すばる超広視野多天体分光器PFSは何を明らかにするのか?」 2018年3月14日から17日にかけて千葉大学で開催された日本天文学会の春季年会で、上記のタイトルで企画セッションを設け、PFSを使ってどのような研究ができるのかについて議論しました。セッションは1日半にわたって開催され、合計19の講演がありました。 企画セッションの様子 また、15日のお昼休みの時間にPFSに関する意見交換会を開催し、サーベイ観測計画、科学運用のイメージ、PFSプロジェクトへの参加の仕方等について話し合いました。意見交換会は1時間と短い時間でしたが、現在PFSプロジェクトに参加している人だけでなく、参加していない人からも多くの意見を募ることができました。 意見交換会の様子 今回の企画セッションを機会に、日本研究者の参加が増え、大規模サーベイ観測がより力強いものになることを願っています。