The Vera C. Rubin Observatory released its first images taken with the world’s largest digital camera on June 23, 2025 (local ...

Subaru/Gemini Time Exchange Program 1. Definition According to the agreement between the Directors of Subaru Telescope and Gemini Observatory, Subaru users can apply for Gemini time through this ...

determine parameters for "hdsql". The parameter "indirec" is the raw data directory confirmed in [1] + header of raw data file name ("HDSA000" usually). And file number without header should be ...

A systematic search for galaxy protocluster cores at the transition epoch of their star formation activity, MNRAS, 513, 3252 (07/2022) Aoki, W., et al., Silicon and strontium abundances of very ...

Notes Our observatory usually acquires 10 biases, 5 darks, and 10 dome flats with each filter for science calibration in every HSC observing run. In addition, basically, a spectrophotometric standard ...

Triple Ring Galaxy（2MASX J22361103+0124304）Triple Ring Galaxy（2MASX J22361103+0124304） November 6, 2024 Last updated: November 28, 2024 ...

The Subaru Telescope's wide and deep imaging observations are contributing information to the New Horizons spacecraft as it moves through the outer Solar System. By applying a unique analysis method ...

A Giant Cluster of Supermassive Black Holes Supermassive black holes, known as quasars, shine like cosmic beacons due to the vast amounts of energy released as they actively consume matter from their ...

System Overview of Subaru AO188 AO188 module Subaru AO188 is an 188 element curvature sensor adaptive optics system that are operated in both natural guide star (NGS) and laser guide star (LGS) modes.

Figure 1: Dark matter in the Perseus Cluster. The distribution of dark matter (in blue) is overlayed on an image taken by Hyper Sprime-Cam on the Subaru Telescope. The newly detected subcluster ...

The Subaru Telescope has started a new outreach camera project in collaboration with the Asahi-Shimbun, one of the most popular newspapers in Japan. This camera is used for live streaming of the night ...

Figure 2: A schematic illustration of the laser guide star adaptive optics system. The artificial guide star is created in the direction of the target by the laser beam emitted from the back of the ...