I'm wanting to add the zodiacal light as a spatially flat source. I have from Leinart (1998) that the surface brightness at 90° solar elongation is 0.28 Jy/sr at lamda = 2.2 micron, and I intend to use NIRCam's F210M filter. How do I normalize a spatially flat source? The "normalization" tab seems only to envision a point source, not a surface brightness.
Thanks for any tips on how to proceed.