(*TEST* flat inverted) --- filter V, bin 2, night 210501, compared to previous night 210427, sigma = 0.0093 --- (flat / previous inverted)(flat inverted) --- filter B, bin 2, night 210428(flat inverted) --- filter SG, bin 2, night 210427(flat inverted) --- filter SI, bin 2, night 210428(flat inverted) --- filter SR, bin 2, night 210407(flat inverted) --- filter V, bin 2, night 210501
