“DESI”的版本间差异

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(未显示同一用户的10个中间版本)
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http://desi.lbl.gov/
http://desi.lbl.gov/
==辅助数据==
*https://github.com/EigenHermit/get_stamp_desi_ls/ 在DESI里面切大图的程序,输入RA,DEC和boxsize从DESI的图像数据库里面切出fits file


==图像巡天==
*previously [[BigBOSS]]
* The Beijing-Arizona Sky Survey (BASS)
* BASS[http://bass.bao.ac.cn] lead by Zhouxu
* The DECam Legacy Survey (DECaLS)
* The Mayall z-band Legacy Survey (MzLS)
* https://www.legacysurvey.org/
* 14000平方度,g,r,z及WISE的四个波段

==光谱巡天==
* * 5000根光纤
* wavelength range 360 to 980 nm
* spectral resolution of R = between 2000 and 5500
* 天区覆盖:14000 deg2,总样本 30 million spectroscopic target
* 四个子样本
:* (i) luminous red galaxies (LRGs) in the redshift range z = 0.3 to z = 1
:* (ii) emission line galaxies (ELGs) to z = 1.7
:* (iii) quasars to higher redshifts (2.1 < z < 3.5)
:* (iv) a magnitude-limited Bright Galaxy Survey out to z~0.6 with a median redshift of z~0.2

===BGS===
* 在bright observing time进行
* a flux limited sample of around 10 million galaxies
* r<19.5 (800 galaxies/deg^2)
* 19.5 < r < 20 (a secondary sample, 600 galaxies/deg^2)

2023年7月8日 (六) 04:09的最新版本

http://desi.lbl.gov/

辅助数据

图像巡天

  • The Beijing-Arizona Sky Survey (BASS)
  • The DECam Legacy Survey (DECaLS)
  • The Mayall z-band Legacy Survey (MzLS)
  • https://www.legacysurvey.org/
  • 14000平方度,g,r,z及WISE的四个波段

光谱巡天

  • * 5000根光纤
  • wavelength range 360 to 980 nm
  • spectral resolution of R = between 2000 and 5500
  • 天区覆盖:14000 deg2,总样本 30 million spectroscopic target
  • 四个子样本
  • (i) luminous red galaxies (LRGs) in the redshift range z = 0.3 to z = 1
  • (ii) emission line galaxies (ELGs) to z = 1.7
  • (iii) quasars to higher redshifts (2.1 < z < 3.5)
  • (iv) a magnitude-limited Bright Galaxy Survey out to z~0.6 with a median redshift of z~0.2

BGS

  • 在bright observing time进行
  • a flux limited sample of around 10 million galaxies
  • r<19.5 (800 galaxies/deg^2)
  • 19.5 < r < 20 (a secondary sample, 600 galaxies/deg^2)