(*TEST* flat inverted) --- filter SG, bin 2, night 211107, compared to previous night 211105, sigma = 0.0150 --- (flat / previous inverted)(flat inverted) --- filter B, bin 2, night 211103(flat inverted) --- filter SG, bin 2, night 211107(flat inverted) --- filter SI, bin 2, night 211104(flat inverted) --- filter SR, bin 2, night 211105(flat inverted) --- filter V, bin 2, night 211105