(*TEST* flat inverted) --- filter B, bin 2, night 250611, compared to previous night 250609, sigma = 0.0052 --- (flat / previous inverted)
(*TEST* flat inverted) --- filter Halpha, bin 2, night 250611, compared to previous night 250609, sigma = 0.0063 --- (flat / previous inverted)
(*TEST* flat inverted) --- filter Open, bin 2, night 250611, compared to previous night 250609, sigma = 0.0057 --- (flat / previous inverted)
(*TEST* flat inverted) --- filter R, bin 2, night 250611, compared to previous night 250609, sigma = 0.0061 --- (flat / previous inverted)
(*TEST* flat inverted) --- filter V, bin 2, night 250611, compared to previous night 250609, sigma = 0.0058 --- (flat / previous inverted)