(*TEST* flat inverted) --- filter Halpha, bin 2, night 211019, compared to previous night 211016, sigma = 0.0199 --- (flat / previous inverted)
(*TEST* flat inverted) --- filter SG, bin 2, night 211019, compared to previous night 211016, sigma = 0.0207 --- (flat / previous inverted)
(*TEST* flat inverted) --- filter SI, bin 2, night 211019, compared to previous night 211016, sigma = 0.0226 --- (flat / previous inverted)
(*TEST* flat inverted) --- filter SR, bin 2, night 211019, compared to previous night 211016, sigma = 0.0221 --- (flat / previous inverted)
(*TEST* flat inverted) --- filter SU, bin 2, night 211019, compared to previous night 211016, sigma = 0.0234 --- (flat / previous inverted)
(*TEST* flat inverted) --- filter SZ, bin 2, night 211019, compared to previous night 211016, sigma = 0.0249 --- (flat / previous inverted)