August 31, 2023
Reduction software has been updated.

August 17, 2022
Reduction software has been updated. Thanks to Isobe-san's contribution, this version can create an error data cube.

August 5, 2022
Gallery page was created.

July 28, 2022
FOCAS ETC is officially adapted to the IFU mode.

August 18, 2021
A new sky slit was installed. The number of available spaxels incleases from 10 to about 50.
Reduction software has been updated.

June 21, 2021
High precision sky subtracton software (ZAP) now supports FOCAS IFU! The informaiton is here.

February 10, 2021
Reduction software has been updated.

Decenber 16, 2020
Instrument paper has been published (Ozaki et al. 2020, PASJ, 72, 97).

October 3, 2020
Reduction software has been updated.

March 25, 2020
Software Manual has been slightly revised.
New manual is here

February 13, 2020
Reduction software has been updated.

February 10, 2020
Reduction software has been updated.
A test data set is available here.

June 21, 2019
Reduction software has been updated.

April 2, 2019
Reduction software is now available here.

February 8, 2019
Information about the wavelenght coverage for each grism has been modified. The available grism information is integrated into this page in the Subaru web page.
Users can see the wavelength coverage of each channel here.

September 3, 2018
The wavelength range of VPH850 has been corrected (7380A => 9700A).
The figure of the FoV below has been revized. The field size is now based on the measured scales.

August 21, 2018
Information for VPH900 is added in the available grism page.

August 20, 2018
Descriptions about the absorption feature originated from the coating and the sky subtraction demonstrations have been added in the instrument desctiption page.

August 19, 2018
Efficiency curves of some VPH grisms have been added to the efficiency plot in the instrument desctiption page.