What will be revealed with PFS? / PFSで目指すサイエンス

— From Masahiro Takada (IPMU) Today we would like to introduce what we can study with PFS! The PFS project aims at three major scientific objectives. One of them is cosmology, in particular the nature of the so-called dark energy that is causing an accelerating expansion of the Universe. Its discovery earned 2011 Novel Prize in Physics. However, the discovery… Read more »

A prototype dichroic mirror is now ready for integration to Spectrograph. / 分光器の部品・ダイクロイックミラーの試作品が完成しました

As introduced in the previous post, a various parts for Spectrograph are arriving in France, where we started building up the Spectrograph and verifying its performance. https://pfs.ipmu.jp/blog/2015/08/p17 This time, we are talking about dichroic mirror as one key parts in the spectrograph. PFS delivers spectra covering such a wide range of wavelengths as from visible to near infrared with a… Read more »

The fiber positionar is under the experiment / ファイバー配置システム試験中

One of the unique features of the PFS instrument is its multiplicity: Using 2400 fibers, a number of spectra of stars and galaxies can be obtained simultaneously. The actuator named “Cobra”, which is comprised of two motors, is used for moving each fiber to the position of an astronomical object of interest on the focal plane. The “patrol area”, where each fiber attached to Cobra… Read more »

Cooling Experiment of Camera Modules is Going on / カメラユニットの試験が進行中

The cooling experiment of camera modules for spectrograph is going on at Johns Hopkins University, the US. In order to observe faint stars and galaxies, astronomical detectors in visible and near infrared are used under very low temperature (-100 degree Celsius / -148 degree Fahrenheit or less than it) and high vacuum (less than one billion of atmospheric pressure). By this experiment… Read more »

Review meeting of design of the Spectrographs Clean Room was held / 分光器設置室の設計レビュー会議をしました

A review meeting for the Clean Room holding the spectrographs was held on 19 and 20 August at Hawaii Observatory, National Astronomical Observatory of Japan. The participants were from Kavli IPMU, collaborators having the responsibility for the Spectrograph, and Hawaii Observatory. The spectrographs are put on the fourth floor in the dome building of  Subaru telescope. The floor will have a huge clean… Read more »

IAU General Assembly / IAU総会で発表しました。

From third to fourteenth August, International Astronomical Union (IAU) general assembly was held in Honolulu, Hawaii, the US. Astronomers from all over the world gathered for discussions during this international workshop. The PFS project presented a poster, with which the project manager and collaborators introduced the project and explained the progress. 夏休みシーズンの8月3日から14日に、ハワイ州ホノルルで国際天文学連合(IAU)の総会が開かれました。この国際会議には世界中から天文学者が集まってきます。PFSプロジェクトもポスターを出し、プロジェクトマネージャーを始め共同開発機関の方々が計画の紹介や進捗の説明をしました。  

PFS science workshop in Japan / PFS国内サイエンスワークショップ

Subaru/PFS science workshop for Japanese researchers was held at NAOJ Mitaka campus on July 7-11, 2015. About 90 Japanese researchers gathered and discussed possible science cases with the PFS. In this workshop, not only three PFS key sciences (“cosmological” studies to understand the nature of dark matter and dark energy, “galactic archaeology” studies to reveal the history of our Milky… Read more »

First Spectrograph Module started to be built / 最初の分光器の組み上げが始まりました。

The PFS project has reached a major milestone toward completing the instrument. PFS has four identical spectrograph modules in order to observe about 2400 astronomical objects. Among them, various modules for the first spectrograph are coming to a clean room at Marseille Observatory (LAM) in France from our team over the world. (delivery of modules) Below are the pictures of the modules;… Read more »

Enjoy PFS blog! / ブログ始めました。

We started the PFS blog to show you our progress of the development, brief report of science/ technical meetings, and anything about the PFS project. We hope you enjoy our blog. ブログ始めました。 装置の開発状況や色々なミーティングの様子などPFSプロジェクトのことをお届けしたいと思います。