DMSP OLS low-light visible image of Invest 97S, taken at 17:22 UTC, 5 April 2012 Published April 10, 2012 at 1024 × 1024 in VIIRS view of Invest 97S at night DMSP OLS low-light visible image of Invest 97S, taken at 17:22 UTC, 5 April 2012. Image courtesy Naval Research Laboratory. DMSP OLS low-light visible image of Invest 97S, taken at 17:22 UTC, 5 April 2012. Image courtesy Naval Research Laboratory.