SDO/AIA 335 Angstrom FITS Data

The SDO/AIA 335 Å Level 1 FITS Data. The 335 Å channel observes the Fe xvi line from active region corona (2.5 MK).

The Atmospheric Imaging Assembly (AIA) onboard Solar Dynamics Observatory (SDO) focuses on the evolution of the magnetic environment in the Sun’s atmosphere, and its interaction with embedded and surrounding plasma. The AIA investigation covers a broad range of science objectives that focus on five core research themes that both advance solar and heliospheric physics in general and provide advanced warning of coronal and inner-heliospheric disturbances of interest to the Living With a Star (LWS) program, i.e., global change, space weather, human exploration of space, and technological infrastructure in space and on Earth.

AIA provides the following essential capabilities: i) A view of the entire Sun in 4k x 4k resolution (pixel size of 0.6 arcseconds), with full thermal coverage of the corona; ii) A high signal-to-noise ratio for two- to three-second exposures that reaches 100 in quiescent conditions for the low-temperature coronal-imaging channels and during flaring in the higher-temperature channels, with a dynamic range of up to 10,000; iii) Essentially uninterrupted viewing for months at a temporal cadence of 12 seconds in seven extreme UV (EUV) band passes (94, 131, 171, 193, 211, 304 and 335 Å), and 24 seconds for two UV channels (1600 and 1700 Å) band passes; iv) In special observing modes, AIA can capture images of the Sun at higher cadence while keeping within the instrument allocated telemetry by using a subset of bandpass channels, and/or using a crop table.

SDO/AIA 335埃一级FITS数据。335埃通道观测来自活动区日冕（250万开尔文）的铁十六（Fe xvi）谱线。

太阳动力学观测台（Solar Dynamics Observatory，SDO）搭载的大气成像组件（Atmospheric Imaging Assembly，AIA）专注于研究太阳大气中磁环境的演化及其与嵌入等离子体和周围等离子体的相互作用。AIA的研究涵盖广泛的科学目标，聚焦于五大核心研究主题——这些主题既推动太阳物理和日球层物理的整体发展，也为“与恒星共存（Living With a Star，LWS）计划”所关注的日冕及内日球层扰动提供预警，例如全球变化、空间天气、人类太空探索以及空间和地面的技术基础设施相关扰动。

AIA具备以下核心能力：i) 以4k×4k分辨率（像素大小0.6角秒）观测整个太阳，实现对日冕的完整热覆盖；ii) 两到三秒曝光的高信噪比——在宁静条件下，低温日冕成像通道的信噪比可达100，而在耀斑期间，高温通道的信噪比亦可达此水平，动态范围最高达10000；iii) 在七个极紫外（EUV）波段（94、131、171、193、211、304和335埃）以12秒的时间分辨率实现近乎不间断观测，在两个紫外（UV）波段（1600和1700埃）则以24秒的时间分辨率观测；iv) 在特殊观测模式下，AIA可通过使用部分波段和/或裁剪表，在仪器分配的遥测带宽内以更高时间分辨率捕获太阳图像。