NICER observation list: Target ID 675501

A few blackhole X-ray binaries (BHXBs) have been known to show recurrent intensity dips in their lightcurves during outburst. These systems also show indication of outflowing winds. The dips are believed to be caused by clumps of cold obscuring material. Until now, our knowledge of the properties of such obscurer and its relation with disk winds as well as spectral state is very limited. Because soft X-ray photons are mostly absorbed by the obscuring material, NuSTAR's high energy capabilities make it the instrument of choice to study the nature of dips and obscuration in BHXBs. We therefore seek Target of Opportunity (ToO) observations with NuSTAR, jointly with NICER, for any one of a selected list of seven known 'dipping' BHXBs in case they go into outburst during cycle 9.