Zodiacal background and Earthshine intensities versus wavelength
Zodiacal contribution assumes an ecliptic latitude of 30 degrees and an ecliptic longitude of 180 degrees, yielding a V band surface brightness of 22.7 magnitudes per square arcsec. Earthshine assumes an angle of 24 degrees between the target and bright limb of the Earth. This is a relatively high background configuration. LOW-SKY observations will have Earthshine backgrounds lower by roughly a factor of 6. Column 1: Wavelength (in Angstroms) Column 2: Earthshine intensity (in erg/sec/cm^2/Angstrom/arcsec^2) Column 3: Zodiacal intensity (in erg/sec/cm^2/Angstrom/arcsec^2) Column 4: Total background intensity (sum of columns 2 and 3) 1000 4.8E-23 7.3E-29 4.8E-23 1100 8.8E-22 6.0E-27 8.8E-22 1200 8.0E-23 6.1E-26 8.0E-23 1400 8.6E-25 1.5E-24 2.3E-24 1500 8.3E-25 5.3E-24 6.1E-24 1600 5.1E-25 1.3E-22 1.3E-22 1700 1.6E-24 4.1E-21 4.1E-21 1800 1.9E-22 8.8E-21 8.9E-21 1900 8.8E-22 1.3E-20 1.4E-20 2000 2.0E-21 2.0E-20 2.2E-20 2100 3.2E-21 7.0E-20 7.4E-20 2200 1.5E-21 1.3E-19 1.3E-19 2300 6.6E-22 1.0E-19 1.0E-19 2400 5.0E-22 1.0E-19 1.0E-19 2500 4.8E-22 1.4E-19 1.4E-19 2600 1.1E-21 1.7E-19 1.7E-19 2700 1.4E-20 5.8E-19 5.9E-19 2800 4.1E-21 1.6E-19 1.7E-19 2900 8.6E-20 1.2E-18 1.3E-18 3000 1.9E-19 7.0E-19 8.8E-19 3100 4.1E-19 8.5E-19 1.3E-18 3200 7.2E-19 1.3E-18 2.0E-18 3400 1.3E-18 1.6E-18 2.9E-18 3500 1.6E-18 1.6E-18 3.2E-18 3600 2.1E-18 1.8E-18 3.9E-18 3700 2.4E-18 1.9E-18 4.3E-18 3800 2.5E-18 1.9E-18 4.3E-18 3900 3.0E-18 1.9E-18 5.0E-18 4000 4.8E-18 2.8E-18 7.5E-18 4200 4.8E-18 2.9E-18 7.7E-18 4400 6.0E-18 2.9E-18 8.9E-18 4600 6.8E-18 3.1E-18 1.0E-17 4800 6.7E-18 3.4E-18 1.0E-17 5000 6.9E-18 3.0E-18 9.9E-18 5200 6.9E-18 2.8E-18 9.7E-18 5400 7.1E-18 2.8E-18 9.9E-18 5600 7.4E-18 2.7E-18 1.0E-17 5800 7.4E-18 2.7E-18 1.0E-17 6000 7.3E-18 2.6E-18 9.9E-18 6200 7.0E-18 2.5E-18 9.5E-18 6400 6.8E-18 2.5E-18 9.3E-18 6600 6.7E-18 2.4E-18 9.1E-18 6800 6.5E-18 2.3E-18 8.8E-18 7000 6.3E-18 2.2E-18 8.5E-18 7200 6.2E-18 2.2E-18 8.3E-18 7400 5.9E-18 2.0E-18 7.9E-18 7600 5.8E-18 1.7E-18 7.5E-18 7800 5.6E-18 1.8E-18 7.4E-18 8000 5.4E-18 1.7E-18 7.2E-18 8200 5.2E-18 1.7E-18 6.9E-18 8400 5.1E-18 1.6E-18 6.7E-18 8600 4.9E-18 1.6E-18 6.4E-18 8800 4.7E-18 1.5E-18 6.2E-18 9000 4.5E-18 1.3E-18 5.9E-18 9200 4.4E-18 1.3E-18 5.8E-18 9400 4.3E-18 1.6E-18 5.9E-18 9600 4.2E-18 1.3E-18 5.6E-18 9800 4.1E-18 1.2E-18 5.3E-18 10000 3.9E-18 1.1E-18 5.0E-18 10200 3.8E-18 1.1E-18 4.8E-18 10400 3.6E-18 1.0E-18 4.7E-18 10700 3.5E-18 9.8E-19 4.4E-18 10800 3.4E-18 9.6E-19 4.4E-18 11000 3.3E-18 9.3E-19 4.2E-18