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Quasars Behind the Galactic Plane (2)

Quasars Behind the Galactic Plane (2)

Through the zone of avoidance...
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Installing Tractor on Mac
  • Nov 15, 2024
  • 2 minutes read
1. Preparations 1.1. Install Command Line Tools for Xcode If you have not installed Xcode, please install it from the App Store. After installation, open a terminal and type: ......
Useful Table Access Protocol (TAP) URLs for Astronomers
  • Sep 23, 2024
  • One minute read
Table Access Protocol (TAP) is a service protocol for accessing general table data, especially astronomical catalogs. For a detailed introduction to TAP, please refer to the IVOA TAP document. ......
The CatNorth Catalog: Over 1.5 Million Reliable Quasar Candidates from Gaia DR3
  • May 1, 2024
  • 3 minutes read
The CatNorth Catalog: Over 1.5 Million Reliable Quasar Candidates from Gaia DR3
Reposted from KIAA-PKU The Kavli Institute for Astronomy and Astrophysics at Peking University announces an advancement in cosmic exploration with the release of the CatNorth quasar candidate catalog, as recently published in The Astrophysical Journal Supplement Series. The international collaborative study, led by Dr. Yuming Fu and Prof. Xue-Bing Wu, presents an enhanced set of over 1.5 million reliable quasar candidates, building upon the initial Gaia DR3 quasar candidate catalog noted for its substantial size but low purity. ......
How to install IRAF and PyRAF on a M1/M2 (Apple Silicon) Mac?
  • Jan 20, 2024
  • 5 minutes read
How to install IRAF and PyRAF on a M1/M2 (Apple Silicon) Mac?
This tutorial is for installing IRAF Community Distribution and PyRAF on a M1/M2 (Apple Silicon) Mac. The following steps are tested on Mac OS Sonoma 14.2.1 with M1 chip. ......
Schedule of time allocation in S22B and S23A
  • Sep 26, 2022
  • One minute read
Telescope Lijiang-2.4m Xinglong-2.16m 2022-09 9.25-9.30 (北京时间当日24点以前) 2022-10 10.22-10.25 2022-11 11.11-11.12 2022-12 12.3-12.4; 12.13-12.14; 12.25-12.27 2023-01 1.18-1.20; 1.25-1.27 1.17-1.18 2023-02 2.23-2.25 (北京时间次日2:30-天亮) 2.11 (half night) 2023-03 3.22-3.23 2023-04 2023-05 5.19-5.21 2023-06 6.16-6.17 6.8-6.9 2023-07 ......