We present infrared photometry of all 36 potential JWST calibrators for which there is archival Spitzer IRAC data. This photometry can then be used to inform the stellar models necessary to provide absolute calibration for all JWST instruments. We describe in detail the steps necessary to measure IRAC photometry from archive retrieval to photometric corrections. To validate our photometry, we examine the distribution of uncertainties from all detections in all four IRAC channels as well as compare the photometry and its uncertainties to those from models, ALLWISE, and the literature. Seventy-five percent of our detections have standard deviations per star of all observations within each channel of less than 3%. The median standard deviations are 1.2%, 1.3%, 1.1%, and 1.9% in [3.6]–[8.0], respectively. We find less than 8% standard deviations in differences of our photometry with ALLWISE and excellent agreement with literature values (less than 3% difference), lending credence to our measured fluxes. JWST is poised to do groundbreaking science, and accurate calibration and cross-calibration with other missions will be part of the underpinnings of that science.

我们介绍了所有36个潜在的JWST校准器的红外光度法，其中有档案Spitzer IRAC数据。然后，可以使用这种测光法来告知为所有JWST仪器提供绝对校准所必需的恒星模型。我们详细描述了测量IRAC光度的必要步骤，从档案检索到光度校正。为了验证我们的光度学，我们检查了所有四个IRAC通道中所有检测的不确定性分布，并将光度学及其不确定性与来自模型，ALLWISE和文献的不确定性进行了比较。我们探测到的百分之七十五的每个通道内所有观测的每颗恒星的标准偏差均小于3％。在[3.6]-[8.0]中，中位数标准差分别为1.2％，1.3％，1.1％和1.9％。我们发现，与ALLWISE相比，光度学差异的标准偏差小于8％，与文献值的一致性极佳（差异小于3％），这为我们测得的通量提供了可信度。JWST准备进行突破性的科学，与其他任务的精确校准和交叉校准将成为该科学的基础。