2MASS 全天数据释放
收藏国家天文科学数据中心2024-03-01 收录
下载链接:
https://nadc.china-vo.org/res/r102005/
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资源简介:
2微米全天巡天(2MASS)全天空数据发布包含高度均一性的近红外星表和图像数据,覆盖99.998%的天空,这些数据来自亚利桑那州霍普金斯山和智利塞罗托洛的1.3米望远镜的巡天观测。All Sky Release数据产品包括一个包含470992970个物体的位置和光度的点源星表(PSC),一个包含59731次巡天扫描的公共信息的扫描信息表(SCN),以及一个包含1647599个空间扩展源(其中大多数是星系)的位置、光度和基本形状信息的扩展源目录(XSC),以及一个包含4121439张覆盖天空的J、H和Ks FITS图像的图像图谱。此镜像数据集包含点源星表(PSC)、扫描信息表(SCN)和扩展源目录(XSC),但不包含图像数据,图像数据可通过红外科学档案馆的在线服务获得。其他细节请参考下载链接中的使用说明。
Two Micron All-Sky Survey (2MASS) All Sky Release contains highly uniform near-infrared catalogs and image data, covering 99.998% of the celestial sphere. These datasets were acquired via survey observations using 1.3-meter telescopes at Mount Hopkins, Arizona, and Cerro Tololo, Chile. The data products of the 2MASS All Sky Release include: a Point Source Catalog (PSC) that records positions and photometry for 470,992,970 celestial objects; a Scan Information Table (SCN) holding public metadata for 59,731 survey scans; an Extended Source Catalog (XSC) providing positions, photometry, and basic morphological information for 1,647,599 spatially extended sources, most of which are galaxies; and an image atlas comprising 4,121,439 J-, H-, and Ks-band FITS images covering the entire sky. This mirrored dataset includes the Point Source Catalog (PSC), Scan Information Table (SCN), and Extended Source Catalog (XSC), but excludes the image data. The image data can be accessed through the online services of the Infrared Science Archive. For additional details, please refer to the usage instructions provided in the download link.
提供机构:
国家天文科学数据中心
搜集汇总
数据集介绍

背景与挑战
背景概述
该数据集是2微米全天巡天(2MASS)的全天空数据发布,包含高度均一性的近红外星表和图像数据,覆盖99.998%的天空。主要数据产品包括470992970个物体的点源星表、1647599个空间扩展源目录以及59731次巡天扫描的公共信息表,但不包含图像数据。
以上内容由遇见数据集搜集并总结生成



