Author Archives: PFS Project

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 »

日本天文学会春季年会でPFS企画セッションを開催しました。

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。

Database prototype was opened to PFS collaboration / データベース・プロトタイプシステムの内部公開

Written by Masayuki Tanaka (NAOJ) PFS survey is going to collect a huge amount of data.  Thanks to the high multiplexity with 2400 fibers, we are going to collect as many as 67,000 spectra in a single night according to the current survey plan.  In addition, we will measure a variety of physical parameters  — redshifts of galaxies, strengths of emission and absorption… Read more »

Updates on Development of Metrology Camera System / メトロロジカメラ開発は今…

“Metrology Camera System” is one of the PFS instrument subsystems under development by ASIAA (Academia Sinica Institute of Astronomy and Astrophysics, Taiwan). This is a small telescope system installed onto the Cassegrain Focus at the bottom of the Subaru telescope to look up the Prime focus, take the image of approximately 2400 back-illuminated fiber spots in one exposure with the large… Read more »

The 1st blue camera cryostat was delivered in Marseille / 1台目の青カメラがマルセイユに到着

In January 2018, the visible-blue camera cryostat of the first spectrograph module was shipped from Johns Hopkins University (JHU, the United States of America) to Laboratoire d’Astrophysique de Marseille (LAM, France). Visible-blue camera at Johns Hopkins University PFS are developing the four identical spectrograph modules, each of which has three channels with visible-blue, visible-red and near-infrared camera units, in order to… Read more »

Joint work for shipping the first positioner module / ファイバー配置モジュール輸送に向けて

At California Institute of Technology (Caltech,  USA), the fiber positioners “Cobra” are assembled into a module (so-called “Cobra module”) by the teams from Caltech, NASA Jet Propulsion Laboratory (JPL) and Brazil in collaboration. As highlighted in the previous article, the first Cobra module has been assembled, tested and calibrated,  so will be shipped soon to Taiwan, where the Cobra modules will… Read more »