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Advanced Camera for Surveys Instrument Handbook for Cycle 20 > Chapter 9: Exposure-Time Calculations > 9.7 Tabular Sky Backgrounds

 9.7 Tabular Sky Backgrounds
We provide Table 9.6 of the “high” sky background numbers as plotted in Figure 9.1. See the text and the caption in Figure 9.1 for more details. These high sky values are defined as the earthshine at 38° from the limb and the high zodiacal light of mv = 22.1 magnitude/arcseconds2.
 Wavelength Earthshine Zodiacal light Total background Å erg/sec/cm2/Å/arcsec2 erg/sec/cm2/Å/arcsec2 erg/sec/cm2/Å/arcsec2 1000. 2.41E-23 1.26E-28 2.41E-23 1100. 4.38E-22 1.02E-26 4.38E-22 1200. 4.01E-23 1.05E-25 4.02E-23 1400. 4.29E-25 2.50E-24 2.93E-24 1500. 4.16E-25 9.12E-24 9.54E-24 1600. 2.55E-25 2.30E-22 2.30E-22 1700. 7.89E-23 7.06E-21 7.14E-21 1800. 9.33E-23 1.50E-20 1.51E-20 1900. 4.39E-22 2.20E-20 2.24E-20 2000. 1.01E-21 3.49E-20 3.59E-20 2100. 1.60E-21 1.21E-19 1.23E-19 2200. 7.49E-22 2.16E-19 2.17E-19 2300. 3.32E-22 1.75E-19 1.75E-19 2400. 2.50E-22 1.79E-19 1.79E-19 2500. 2.39E-22 2.47E-19 2.47E-19 2600. 5.62E-22 2.93E-19 2.94E-19 2700. 6.77E-21 9.95E-19 1.00E-18 2800. 2.03E-21 2.82E-19 2.91E-19 2900. 4.32E-20 2.04E-18 2.08E-18 3000. 9.34E-20 1.20E-18 1.29E-18 3100. 2.07E-19 1.46E-18 1.67E-18 3200. 3.60E-19 2.25E-18 2.61E-18 3400. 6.40E-19 2.81E-18 3.45E-18 3500. 8.20E-19 2.73E-18 3.55E-18 3600. 1.06E-18 2.68E-18 3.74E-18 3700. 1.22E-18 3.25E-18 4.47E-18 3800. 1.23E-18 3.05E-18 4.28E-18 3900. 1.52E-18 3.27E-18 4.79E-18 4000. 2.38E-18 4.54E-18 6.92E-18 4250. 2.33E-18 4.48E-18 6.81E-18 4500. 2.78E-18 5.32E-18 8.10E-18 5000. 2.55E-18 4.92E-18 7.47E-18 5250. 2.69E-18 5.28E-18 7.97E-18 5500. 2.56E-18 5.20E-18 7.76E-18 5750. 2.56E-18 5.33E-18 7.89E-18 6000. 2.40E-18 5.11E-18 7.51E-18 6250 2.27E-18 4.94E-18 7.21E-18 6500. 2.20E-18 4.88E-18 7.08E-18 6750. 2.07E-18 4.69E-18 6.76E-18 7000. 1.90E-18 4.40E-18 6.30E-18 7250. 1.85E-18 4.34E-18 6.19E-18 7500. 1.73E-18 4.13E-18 5.86E-18 7750. 1.63E-18 3.95E-18 5.58E-18 8000. 1.57E-18 3.85E-18 5.42E-18 8250. 1.48E-18 3.68E-18 5.16E-18 8500. 1.37E-18 3.46E-18 4.83E-18 8750. 1.31E-18 3.36E-18 4.67E-18