Category Archives: Development

5 “Cobra Modules” left from California to Taiwan

Among the PFS instruments, “Cobra” modules position fibers to galaxies and stars on the Subaru Prime Focal plane. 42 Cobra modules, each of which consists of 57 fibers and its positioners, cover the entire PFS field of view without any inaccessible gaps as shown in Figure 1. Two groups are collaborating to assemble “Cobra Modules”; Brazilian team responsible for fibers,… Read more »

On-telescope Test of the Metrology Camera System

From 23rd to 25th October 2018, or 4 months after Metrology Camera System (MCS) was tested on Subaru telescope, we have finally carried out 2nd test of MCS on the Subaru telescope. Since we used the telescope at night this time, this is the first engineering run with PFS instrument! MCS is the instrument to measure the positions of the… Read more »

The prototype fiber cable has been installed on the telescope

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

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…

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

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

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!

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

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

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 »