(flat inverted) --- filter B, bin 1, night 220219
(flat inverted) --- filter GR, bin 1, night 220219
(flat inverted) --- filter I, bin 1, night 220223
(flat inverted) --- filter R, bin 1, night 220223
(flat inverted) --- filter SU, bin 1, night 220223
(flat inverted) --- filter V, bin 1, night 220223