10.3 Throughputs and Correction Tables

HRC has been unavailable since January 2007. Information about the HRC is provided for archival purposes.

WFC is offered as shared risk in Cycle 33 and may receive minimal calibration. See the ACS website, Call for Proposals, and OPCR webpage for the latest status.

10.3.1 Filter Throughputs and Sensitivities

10.3.2 Color Correction Tables

Table 10.1: Color corrections $\begin{array}{l}\Delta_{f-V}\end{array}$ to go from Johnson V Vega magnitude to AB magnitude for filter f for WFC (ACS ISR 2019-10).

Spectrum^[a]	F435W	F475W	F502N	F550M	F555W	F606W	F625W
Avg Sky	0.60	0.33	0.20	-0.05	0.04	-0.12	-0.24
Low Sky	0.59	0.32	0.19	-0.05	0.04	-0.11	-0.23
O5V	-0.44	-0.29	-0.16	0.06	-0.04	0.12	0.28
B0V	-0.40	-0.26	-0.14	0.05	-0.04	0.12	0.27
A0V	-0.11	-0.10	-0.08	0.02	-0.01	0.09	0.16
A5V	0.02	-0.02	-0.04	0.01	0.00	0.06	0.10
F2V	0.24	0.11	0.05	-0.02	0.01	0.00	-0.02
G2V	0.58	0.30	0.16	-0.05	0.03	-0.08	-0.17
K0V	0.75	0.39	0.22	-0.07	0.04	-0.13	-0.25
M0V	1.16	0.68	0.86	-0.18	0.10	-0.33	-0.57
M6V	1.18	0.70	0.97	-0.20	0.12	-0.36	-0.60
O6I	-0.43	-0.28	-0.15	0.06	-0.04	0.12	0.27
B0I	-0.36	-0.23	-0.13	0.04	-0.03	0.11	0.25
G0III	0.57	0.29	0.16	-0.04	0.03	-0.08	-0.16
K0III	1.04	0.53	0.30	-0.08	0.05	-0.17	-0.33
M0III	1.49	0.81	0.78	-0.17	0.10	-0.34	-0.59
Elliptical	0.81	0.43	0.25	-0.06	0.05	-0.19	-0.34
Sa	0.76	0.43	0.27	-0.07	0.06	-0.16	-0.31
Sbc	0.58	0.33	0.17	-0.05	0.04	-0.14	-0.27
Scd	0.47	0.25	0.02	-0.03	0.03	-0.11	-0.21
Starburst E(B–V) = 0.51–0.60	0.41	0.24	-0.02	-0.01	0.03	-0.25	-0.42
Starburst E(B–V) < 0.1	0.23	0.05	-1.03	0.10	-0.04	-0.11	-0.15
Sun	0.56	0.30	0.16	-0.05	0.03	-0.08	-0.18
Vega	-0.11	-0.11	-0.09	0.02	-0.01	0.09	0.17

Table 10.1 (continued)

Spectrum^[a]	F658N	F660N	F775W	F814W	F850LP	F892N	G800L	CLEAR
Avg Sky	-0.26	-0.28	-0.41	-0.43	-0.48	-0.49	-0.36	-0.07
Low Sky	-0.24	-0.27	-0.39	-0.41	-0.45	-0.45	-0.34	-0.06
O5V	0.39	0.38	0.67	0.75	1.00	0.98	0.55	0.05
B0V	0.40	0.38	0.66	0.73	0.97	0.95	0.54	0.07
A0V	0.37	0.29	0.40	0.43	0.53	0.50	0.32	0.15
A5V	0.30	0.21	0.26	0.29	0.38	0.36	0.22	0.14
F2V	0.07	0.01	0.01	0.03	0.08	0.07	0.01	0.09
G2V	-0.18	-0.21	-0.27	-0.28	-0.29	-0.30	-0.24	0.01
K0V	-0.29	-0.31	-0.41	-0.43	-0.47	-0.48	-0.36	-0.05
M0V	-0.83	-0.84	-1.34	-1.46	-1.73	-1.67	-1.20	-0.64
M6V	-0.94	-0.95	-1.58	-1.72	-2.05	-1.95	-1.42	-0.82
O6I	0.38	0.37	0.66	0.73	0.98	0.96	0.54	0.05
B0I	0.35	0.34	0.61	0.68	0.90	0.88	0.50	0.07
G0III	-0.17	-0.19	-0.26	-0.26	-0.27	-0.29	-0.23	0.01
K0III	-0.40	-0.41	-0.56	-0.59	-0.68	-0.71	-0.50	-0.11
M0III	-0.82	-0.83	-1.28	-1.40	-1.66	-1.64	-1.16	-0.59
Elliptical	-0.46	-0.47	-0.69	-0.75	-0.91	-0.92	-0.62	-0.22
Sa	-0.45	-0.43	-0.58	-0.63	-0.77	-0.79	-0.52	-0.15
Sbc	-0.34	-0.35	-0.56	-0.61	-0.76	-0.73	-0.50	-0.16
Scd	-0.27	-0.28	-0.39	-0.41	-0.46	-0.44	-0.34	-0.08
Starburst E(B–V) = 0.51–0.60	-1.51	-1.00	-0.51	-0.53	-0.61	-0.60	-0.51	-0.21
Starburst E(B–V) < 0.1	-1.21	-0.37	-0.15	-0.18	-0.26	-0.21	-0.18	-0.05
Sun	-0.18	-0.21	-0.28	-0.28	-0.29	-0.29	-0.24	0.00
Vega	0.37	0.29	0.40	0.43	0.53	0.50	0.33	0.15

^aCastelli & Kurucz models are used for the stellar spectra.

Table 10.2: Color corrections $\begin{array}{l}\Delta_{f-V}\end{array}$ to go from Johnson V Vega magnitude to AB magnitude for filter f for HRC (ACS ISR 2019-10).

Spectrum^[a]	F220W	F250W	F330W	F344N	F435W	F475W	F502N	F550M	F555W	F606W
Avg Sky	2.19	1.41	2.00	1.88	0.61	0.31	0.20	-0.05	0.04	-0.11
Low Sky	5.45	3.72	2.08	1.96	0.60	0.31	0.19	-0.05	0.04	-0.10
O5V	-1.46	-1.21	-0.83	-0.79	-0.44	-0.27	-0.16	0.06	-0.04	0.11
B0V	-1.24	-1.01	-0.68	-0.64	-0.40	-0.25	-0.14	0.05	-0.04	0.11
A0V	1.77	1.54	1.14	1.10	-0.10	-0.10	-0.08	0.02	-0.01	0.08
A5V	2.43	2.04	1.39	1.35	0.04	-0.02	-0.04	0.01	0.00	0.06
F2V	3.37	2.48	1.45	1.39	0.25	0.11	0.05	-0.02	0.01	0.00
G2V	5.56	3.45	1.86	1.82	0.59	0.28	0.16	-0.05	0.03	-0.08
K0V	6.87	4.22	2.32	2.34	0.76	0.37	0.22	-0.07	0.04	-0.12
M0V	8.22	6.95	3.80	3.78	1.17	0.65	0.86	-0.18	0.11	-0.30
M6V	8.04	6.87	3.73	3.68	1.20	0.67	0.97	-0.20	0.12	-0.33
O6I	-1.41	-1.17	-0.82	-0.78	-0.43	-0.27	-0.15	0.06	-0.04	0.11
B0I	-1.06	-0.90	-0.65	-0.62	-0.36	-0.22	-0.13	0.04	-0.04	0.10
G0III	5.76	3.67	2.03	1.94	0.58	0.28	0.16	-0.04	0.03	-0.07
K0III	8.23	5.59	3.22	3.13	1.05	0.50	0.30	-0.08	0.06	-0.16
M0III	8.41	8.09	5.10	5.11	1.49	0.77	0.78	-0.17	0.11	-0.32
Elliptical	5.21	3.82	2.32	2.24	0.82	0.41	0.25	-0.06	0.05	-0.18
Sa	4.57	3.68	2.37	2.30	0.77	0.41	0.27	-0.07	0.06	-0.14
Sbc	2.98	2.63	1.87	1.77	0.58	0.31	0.17	-0.05	0.05	-0.13
Scd	2.08	1.88	1.43	1.38	0.47	0.24	0.02	-0.03	0.03	-0.10
Starburst E(B–V) = 0.51–0.60	1.52	1.35	1.04	1.08	0.42	0.23	-0.02	-0.01	0.03	-0.23
Starburst E(B–V) < 0.1	1.09	0.96	0.79	0.79	0.23	0.04	-1.03	0.10	-0.04	-0.11
Sun	5.66	3.54	1.83	1.72	0.57	0.28	0.16	-0.04	0.04	-0.08
Vega	1.66	1.48	1.16	1.13	-0.10	-0.10	-0.09	0.02	-0.01	0.08

Table 10.2 (continued)

Spectrum^[a]	F625W	F658N	F660N	F775W	F814W	F850LP	F892N	G800L	PR200L	CLEAR
Avg Sky	-0.23	-0.26	-0.28	-0.41	-0.43	-0.49	-0.49	-0.36	0.18	0.25
Low Sky	-0.22	-0.24	-0.27	-0.39	-0.41	-0.46	-0.45	-0.34	0.22	0.30
O5V	0.28	0.39	0.38	0.66	0.76	1.02	0.98	0.55	-0.42	-0.54
B0V	0.27	0.40	0.38	0.65	0.74	0.99	0.95	0.54	-0.30	-0.40
A0V	0.16	0.37	0.29	0.39	0.43	0.54	0.50	0.32	0.33	0.39
A5V	0.10	0.30	0.21	0.26	0.30	0.38	0.36	0.22	0.36	0.43
F2V	-0.02	0.07	0.01	0.01	0.03	0.08	0.07	0.01	0.33	0.40
G2V	-0.17	-0.18	-0.21	-0.27	-0.28	-0.29	-0.30	-0.24	0.27	0.35
K0V	-0.25	-0.29	-0.31	-0.41	-0.43	-0.47	-0.48	-0.36	0.23	0.31
M0V	-0.56	-0.83	-0.84	-1.33	-1.47	-1.75	-1.67	-1.20	-0.34	-0.26
M6V	-0.59	-0.94	-0.95	-1.56	-1.74	-2.07	-1.95	-1.43	-0.52	-0.44
O6I	0.27	0.38	0.37	0.65	0.74	1.00	0.96	0.54	-0.40	-0.51
B0I	0.24	0.35	0.34	0.60	0.69	0.92	0.88	0.50	-0.24	-0.32
G0III	-0.16	-0.17	-0.19	-0.26	-0.26	-0.28	-0.29	-0.23	0.28	0.36
K0III	-0.32	-0.40	-0.41	-0.56	-0.60	-0.69	-0.71	-0.50	0.17	0.26
M0III	-0.58	-0.82	-0.83	-1.27	-1.41	-1.68	-1.64	-1.17	-0.30	-0.21
Elliptical	-0.34	-0.46	-0.47	-0.69	-0.76	-0.92	-0.92	-0.63	0.06	0.14
Sa	-0.30	-0.45	-0.43	-0.57	-0.64	-0.78	-0.79	-0.53	0.12	0.20
Sbc	-0.26	-0.34	-0.35	-0.55	-0.62	-0.78	-0.73	-0.50	0.10	0.17
Scd	-0.21	-0.27	-0.28	-0.39	-0.41	-0.46	-0.44	-0.34	0.15	0.22
Starburst E(B–V) = 0.51–0.60	-0.42	-1.51	-1.00	-0.51	-0.54	-0.62	-0.60	-0.51	0.01	0.07
Starburst E(B–V) < 0.1	-0.14	-1.21	-0.37	-0.15	-0.19	-0.28	-0.21	-0.19	0.11	0.16
Sun	-0.18	-0.18	-0.21	-0.28	-0.28	-0.29	-0.29	-0.24	0.27	0.35
Vega	0.16	0.37	0.29	0.39	0.43	0.53	0.50	0.32	0.33	0.39

^aCastelli & Kurucz models are used for the stellar spectra.

Table 10.3: Color corrections $\begin{array}{l}\Delta_{f-V}\end{array}$ to go from Johnson V Vega magnitude to AB magnitude for filter f for SBC (ACS ISR 2019-10).

Spectrum^[a]	F115LP	F122M	F125LP	F140LP	F150LP	F165LP	PR110l	PR130L
Avg Sky	-2.67	-3.69	-0.29	4.31	9.01	7.54	-2.12	-0.26
Low Sky	-1.20	-2.30	4.01	8.50	10.32	8.88	-0.59	4.04
O5V	-1.96	-2.01	-1.95	-1.88	-1.82	-1.75	-1.95	-1.95
B0V	-1.56	-1.56	-1.57	-1.49	-1.43	-1.42	-1.55	-1.56
A0V	3.33	4.70	3.13	2.69	2.39	2.04	3.11	3.06
A5V	5.97	8.21	5.77	5.13	4.46	3.22	5.58	5.57
F2V	8.36	10.81	8.16	7.52	6.84	5.41	7.93	7.92
G2V^[b]	12.17	16.35	11.96	11.30	10.65	9.17	11.55	11.55
K0V^[b]	12.89	18.57	12.68	12.03	11.37	9.89	12.25	12.25
M0V^[b]	14.04	25.88	13.83	13.18	12.52	11.04	13.40	13.40
M6V^[b]	14.01	28.30	13.80	13.15	12.49	11.01	13.36	13.36
O6I	-1.83	-1.87	-1.82	-1.76	-1.71	-1.67	-1.82	-1.82
B0I	-1.10	-1.05	-1.12	-1.08	-1.06	-1.10	-1.10	-1.12
G0III^[b]	12.30	16.50	12.09	11.44	10.78	9.30	11.69	11.69
K0III^[b]	13.71	23.49	13.50	12.85	12.19	10.71	13.06	13.06
M0III^[b]	14.61	30.33	14.40	13.74	13.09	11.60	13.96	13.96
Elliptical	6.65	6.79	6.61	6.53	6.47	6.32	6.61	6.60
Sa	5.72	5.87	5.68	5.58	5.42	5.21	5.67	5.66
Sbc	4.21	4.56	4.13	3.92	3.74	3.44	4.12	4.10
Scd	2.89	3.13	2.83	2.67	2.53	2.32	2.83	2.81
Starburst E(B–V) = 0.51–0.60	2.34	2.51	2.30	2.18	2.08	1.89	2.29	2.28
Starburst E(B–V) < 0.1	1.49	1.59	1.46	1.39	1.34	1.29	1.46	1.45
Sun	11.49	11.77	11.60	11.00	10.36	8.97	11.16	11.27
Vega	2.74	4.00	2.54	2.15	1.98	1.85	2.55	2.49

^a Castelli & Kurucz models are used for the stellar spectra.
^b Stars of stellar type G and later may have chromospheric activity leading to UV emission lines not reproduced by the models, which may affect the color corrections listed here.

Table 10.4: Color corrections $\begin{array}{l}\Delta_{f-NUV}\end{array}$ to go from GALEX NUV AB magnitude to AB magnitude for filter f for SBC (ACS ISR 2019-10).

Spectrum^[a]	F115LP	F122M	F125LP	F140LP	F150LP	F165LP	PR110l	PR130L
Avg Sky	-4.64	-5.66	-2.26	2.34	7.04	5.57	-4.09	-2.24
Low Sky	-6.41	-7.51	-1.20	3.29	5.11	3.67	-5.80	-1.17
O5V	-0.51	-0.56	-0.51	-0.43	-0.37	-0.30	-0.50	-0.50
B0V	-0.35	-0.35	-0.36	-0.27	-0.21	-0.20	-0.34	-0.35
A0V	1.58	2.95	1.38	0.94	0.64	0.30	1.36	1.31
A5V	3.55	5.80	3.36	2.72	2.05	0.81	3.17	3.16
F2V	5.05	7.49	4.85	4.20	3.53	2.09	4.61	4.61
G2V^[b]	6.98	11.16	6.77	6.12	5.46	3.98	6.37	6.37
K0V^[b]	6.51	12.20	6.30	5.65	4.99	3.51	5.87	5.87
M0V^[b]	2.83	14.67	2.62	1.97	1.31	-0.17	2.18	2.18
M6V^[b]	2.65	16.94	2.44	1.79	1.13	-0.35	2.00	2.00
O6I	-0.43	-0.47	-0.43	-0.36	-0.31	-0.27	-0.42	-0.42
B0I	-0.07	-0.02	-0.09	-0.04	-0.03	-0.07	-0.07	-0.08
G0III^[b]	6.85	11.05	6.64	5.99	5.33	3.85	6.24	6.24
K0III^[b]	5.12	14.90	4.91	4.26	3.60	2.12	4.48	4.48
M0III^[b]	1.40	17.12	1.19	0.53	-0.12	-1.60	0.75	0.75
Elliptical	1.56	1.70	1.52	1.44	1.38	1.23	1.52	1.51
Sa	1.21	1.36	1.17	1.07	0.91	0.70	1.16	1.15
Sbc	1.26	1.61	1.18	0.97	0.78	0.49	1.17	1.15
Scd	0.82	1.07	0.76	0.61	0.47	0.26	0.76	0.74
Starburst E(B–V) = 0.51–0.60	0.81	0.98	0.77	0.65	0.55	0.36	0.76	0.75
Starburst E(B–V) < 0.1	0.40	0.50	0.37	0.30	0.25	0.20	0.37	0.36
Sun	6.15	6.43	6.26	5.66	5.02	3.63	5.81	5.92
Vega	1.10	2.36	0.90	0.51	0.34	0.20	0.91	0.85

^a Castelli & Kurucz models are used for the stellar spectra.
^b Stars of stellar type G and later may have chromospheric activity leading to UV emission lines not reproduced by the models, which may affect the color corrections listed here.

Table 10.5: Color corrections $\begin{array}{l}\Delta_{FUV - f}\end{array}$ to go from GALEX FUV AB magnitude to AB magnitude for filter f for SBC (ACS ISR 2019-10).

Spectrum^[a]	F115LP	F122M	F125LP	F140LP	F150LP	F165LP	PR110l	PR130L
Avg Sky	-14.67	-15.69	-12.29	-7.69	-2.99	-4.46	-14.12	-12.27
Low Sky	-13.42	-14.51	-8.20	-3.71	-1.89	-3.34	-12.81	-8.18
O5V	-0.10	-0.15	-0.09	-0.01	0.05	0.11	-0.08	-0.08
B0V	-0.09	-0.09	-0.10	-0.01	0.05	0.06	-0.08	-0.09
A0V	0.72	2.09	0.52	0.09	-0.21	-0.56	0.50	0.46
A5V	0.75	2.99	0.56	-0.08	-0.76	-1.99	0.37	0.36
F2V	0.20	2.65	0.01	-0.64	-1.31	-2.75	-0.23	-0.24
G2V^[b]	-2.00	2.19	-2.20	-2.86	-3.52	-4.99	-2.61	-2.61
K0V^[b]	-3.60	2.08	-3.81	-4.47	-5.12	-6.61	-4.24	-4.24
M0V^[b]	-10.08	1.75	-10.30	-10.95	-11.60	-13.09	-10.73	-10.73
M6V^[b]	-12.72	1.57	-12.93	-13.59	-14.24	-15.73	-13.37	-13.37
O6I	-0.08	-0.12	-0.07	-0.01	0.04	0.08	-0.07	-0.07
B0I	-0.02	0.03	-0.04	0.01	0.02	-0.02	-0.02	-0.03
G0III^[b]	-2.07	2.14	-2.28	-2.93	-3.59	-5.06	-2.68	-2.68
K0III^[b]	-8.58	1.20	-8.79	-9.45	-10.10	-11.59	-9.23	-9.23
M0III^[b]	-14.71	1.01	-14.92	-15.57	-16.23	-17.71	-15.36	-15.36
Elliptical	0.11	0.26	0.07	-0.01	-0.07	-0.22	0.07	0.06
Sa	0.19	0.35	0.15	0.05	-0.11	-0.32	0.15	0.13
Sbc	0.33	0.67	0.25	0.04	-0.15	-0.44	0.24	0.22
Scd	0.25	0.49	0.19	0.03	-0.11	-0.32	0.18	0.17
Starburst E(B–V) = 0.51–0.60	0.20	0.37	0.16	0.04	-0.06	-0.25	0.15	0.14
Starburst E(B–V) < 0.1	0.13	0.23	0.10	0.03	-0.03	-0.08	0.10	0.09
Sun	-0.94	-0.66	-0.83	-1.44	-2.07	-3.46	-1.28	-1.17
Vega	0.65	1.91	0.45	0.06	-0.11	-0.25	0.46	0.40

^a Castelli & Kurucz models are used for the stellar spectra.
^b Stars of stellar type G and later may have chromospheric activity leading to UV emission lines not reproduced by the models, which may affect the color corrections listed here.

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ACS Instrument Handbook
- • Acknowledgments
- • Change Log
- • Chapter 1: Introduction
- Chapter 2: Considerations and Changes After SM4
  - • 2.1 SM4 Repair of ACS
  - • 2.2 ACS/WFC Observations in Cycle 33 and Beyond
  - • 2.3 Comparison of WFC and UVIS
  - • 2.4 Comparison of HRC and UVIS
  - • 2.5 Dithering Considerations
  - • 2.6 CTE Considerations
  - • 2.7 SBC Considerations
- Chapter 3: ACS Capabilities, Design and Operations
  - • 3.1 ACS Location in the HST Focal Plane
  - • 3.2 Instrument Capabilities
  - • 3.3 Instrument Design
  - • 3.4 Basic Instrument Operations
  - • 3.5 ACS Quick Reference Guide
- Chapter 4: Detector Performance
  - • 4.1 Overview
  - • 4.2 The CCDs
  - • 4.3 CCD Operations and Limitations
  - • 4.4 The SBC MAMA
  - • 4.5 SBC Operations and Limitations
  - • 4.6 SBC Bright-Object Limits
- Chapter 5: Imaging
- Chapter 6: Polarimetry, Coronagraphy, Prism and Grism Spectroscopy
  - • 6.1 Polarimetry
  - • 6.2 Coronagraphy
  - • 6.3 Grism and Prism 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
  - • 8.1 Overview
  - • 8.2 ACS Exposure Overheads
  - • 8.3 Orbit Use Determination Examples
- Chapter 9: Exposure-Time Calculations
  - • 9.1 Overview
  - • 9.2 Determining Count Rates from Sensitivities
  - • 9.3 Computing Exposure Times
  - • 9.4 Detector and Sky Backgrounds
  - • 9.5 Extinction Correction
  - • 9.6 Exposure-Time Examples
  - • 9.7 Tabular Sky Backgrounds
- 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

10.3 Throughputs and Correction Tables

10.3.1 Filter Throughputs and Sensitivities

10.3.2 Color Correction Tables

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