NICER observation list: Target ID 365102

We are requesting 104 ksec of observation time in NICER AO2 to monitor the X-ray emission from the super-luminous massive colliding wind binary ETA CARINAE through its next X-ray minimum and recovery. This proposal is the next step of monitoring campaign of X- ray telescopes started with RXTE, followed by Swift and continued by NICER through Cycle 1. The proposed NICER monitoring program in Cycle 2 will give us unprecedented observations to compare the changes during its X-ray recovery. We also request a NuSTAR observation to study the connections between the thermal emission and non-thermal emission by comparing the 30-50 keV X-ray spectrum with NICER soft X-ray spectra. Our proposed NICER program will also provide context for our approved CHANDRA ACIS observations.