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.
Table 9.6: High sky backgrounds.
Wavelength | Earthshine | Zodiacal light | Total |
|---|---|---|---|
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 |
-
ACS Instrument Handbook
- • Acknowledgments
- • Change Log
- • Chapter 1: Introduction
- Chapter 2: Considerations and Changes After SM4
- Chapter 3: ACS Capabilities, Design and Operations
- Chapter 4: Detector Performance
- Chapter 5: Imaging
- Chapter 6: Polarimetry, Coronagraphy, Prism and Grism Spectroscopy
-
Chapter 7: Observing Techniques
- • 7.1 Designing an ACS Observing Proposal
- • 7.2 SBC Bright Object Protection
- • 7.3 Operating Modes
- • 7.4 Patterns and Dithering
- • 7.5 A Road Map for Optimizing Observations
- • 7.6 CCD Gain Selection
- • 7.7 ACS Apertures
- • 7.8 Specifying Orientation on the Sky
- • 7.9 Parallel Observations
- • 7.10 Pointing Stability for Moving Targets
- Chapter 8: Overheads and Orbit-Time Determination
- Chapter 9: Exposure-Time Calculations
-
Chapter 10: Imaging Reference Material
- • 10.1 Introduction
- • 10.2 Using the Information in this Chapter
-
10.3 Throughputs and Correction Tables
- • WFC F435W
- • WFC F475W
- • WFC F502N
- • WFC F550M
- • WFC F555W
- • WFC F606W
- • WFC F625W
- • WFC F658N
- • WFC F660N
- • WFC F775W
- • WFC F814W
- • WFC F850LP
- • WFC G800L
- • WFC CLEAR
- • HRC F220W
- • HRC F250W
- • HRC F330W
- • HRC F344N
- • HRC F435W
- • HRC F475W
- • HRC F502N
- • HRC F550M
- • HRC F555W
- • HRC F606W
- • HRC F625W
- • HRC F658N
- • HRC F660N
- • HRC F775W
- • HRC F814W
- • HRC F850LP
- • HRC F892N
- • HRC G800L
- • HRC PR200L
- • HRC CLEAR
- • SBC F115LP
- • SBC F122M
- • SBC F125LP
- • SBC F140LP
- • SBC F150LP
- • SBC F165LP
- • SBC PR110L
- • SBC PR130L
- • 10.4 Geometric Distortion in ACS
- • Glossary