(*TEST* flat inverted) --- filter V, bin 2, night 220127, compared to previous night 220125, sigma = 0.0243 --- (flat / previous inverted)(flat inverted) --- filter B, bin 2, night 211209(flat inverted) --- filter SG, bin 2, night 211108(flat inverted) --- filter SI, bin 2, night 211209(flat inverted) --- filter SR, bin 2, night 211108(flat inverted) --- filter V, bin 2, night 220125
