UVES Exposure Time Calculator

Near Ultraviolet-Visual-Near Infrared Spectroscopy Mode Version 2.8.5 This application is an exposure time calculator for the ESO UT2 UVES instrument. It is a HTML/Java application realized within the VLT Data Flow Project.	Version 2.8.5
	Description.
	F.A.Q
	Performance

Simulator Setup:

Input Flux Distribution:
- Source Type: Template spectra
- Spectral Type Name: Pickles_A0V
- Redshift Z: 0
- Object Magnitude: 6
- Band: V
Spatial Distribution: Point Source
Sky Conditions:
- Days From New Moon: 7
- Airmass: 1.3
- Seeing: 1.5 arcsec
Instrument Setup:
- Pre Slit Filter: comp/filt/nofilter.dat
- Image Slicer: None
- Slit Width: 0.5 arcsec
- Observation Mode: STANDARD Template.
- Central Wavelength: 437 (nm)
- Camera Tilt: 0 pixel(s)
- Dicroic Selection: Dicroic2
- Arm Cross Disperser Combination: Blue, CD#2
- Below Slit Filter: ins/ut2/uves/eqm/filt/flt_BS6-Her_5.dat
- Detector Read Out Mode: fast
- Detector Gain: low
- Mask Binning: 1x1
- Exposure Time: 60 seconds.

Parameters for: Blue, CD#2, EEV CCD
- gain conversion factor = 2.06 e-/ADU

**Spectral Format, Blue, CD#2, EEV CCD**
**Selected Central Wavelength 437 nm**
Order	wav of central column (nm)	y of central column (pix)	y of central column (arcsec)	FSR range (nm)	FSR l Min (nm)	FSR l Max (nm)	start wav (nm)	end wav (nm)	TS range (nm)
94	496.58	1998	491	5.28	493.53	498.81	492.31	499.89	7.58
95	491.35	1912	470	5.17	488.36	493.53	487.12	494.62	7.50
96	486.23	1829	450	5.06	483.30	488.36	482.05	489.47	7.43
97	481.22	1747	430	4.96	478.34	483.30	477.07	484.43	7.35
98	476.30	1667	410	4.86	473.49	478.34	472.20	479.48	7.28
99	471.49	1588	391	4.76	468.73	473.49	467.43	474.64	7.21
100	466.77	1512	372	4.66	464.06	468.73	462.75	469.89	7.14
101	462.15	1436	353	4.57	459.49	464.06	458.17	465.24	7.07
102	457.62	1362	335	4.48	455.01	459.49	453.67	460.68	7.00
103	453.18	1290	317	4.40	450.61	455.01	449.27	456.21	6.94
104	448.82	1219	300	4.31	446.30	450.61	444.94	451.82	6.87
105	444.54	1149	283	4.23	442.07	446.30	440.70	447.52	6.81
106	440.35	1080	266	4.15	437.92	442.07	436.54	443.29	6.75
107	436.23	1013	249	4.07	433.85	437.92	432.46	439.15	6.69
108	432.19	947	233	4.00	429.85	433.85	428.45	435.08	6.63
109	428.22	883	217	3.93	425.92	429.85	424.52	431.09	6.57
110	424.33	819	202	3.85	422.07	425.92	420.66	427.17	6.51
111	420.51	757	186	3.79	418.28	422.07	416.87	423.32	6.46
112	416.75	695	171	3.72	414.57	418.28	413.14	419.54	6.40
113	413.06	635	156	3.65	410.91	414.57	409.48	415.83	6.35
114	409.44	576	142	3.59	407.33	410.91	405.89	412.18	6.29
115	405.88	518	127	3.53	403.80	407.33	402.36	408.60	6.24
116	402.38	461	113	3.47	400.33	403.80	398.89	405.08	6.19
117	398.94	405	100	3.41	396.93	400.33	395.48	401.62	6.14
118	395.55	349	86	3.35	393.58	396.93	392.12	398.21	6.09
119	392.23	295	73	3.29	390.28	393.58	388.82	394.87	6.04
120	388.96	242	59	3.24	387.04	390.28	385.58	391.58	5.99
121	385.74	189	47	3.19	383.86	387.04	382.39	388.34	5.95
122	382.58	138	34	3.13	380.73	383.86	379.26	385.16	5.90
123	379.47	87	21	3.08	377.64	380.73	376.17	382.03	5.85
124	376.41	37	9	3.03	374.61	377.64	373.14	378.95	5.81

Slit transmission: 0.305289
Medium pixel scale on Y direction: 0.246 arcsec/pix
Number of Pixels per Bin on X direction: 1 pix/bin
PSF extension (Number of pixels along Y over which the sky signal is integrated): 12 pix(s)
Slit_Width * Bin_Scale * PSF_Extension: 1.476 arcsec²
Number of bins along Y over which the sky signal is integrated: 12 bin(s)
Read Out Noise is 4.1 e-
Dark Current is 1 e/h

**Detected Counts (Dicroic2 Arm Blue, CD#2, EEV CCD)**
	FSR Min Wavelength					Wavelength of central column							FSR Max Wavelength
Order	Eff. %	Obj e-	Sky e-	Imax e-	S/N per spectral bin	lambda (nm)	bin size (nm)	Eff. %	Obj e-	Sky e-	Imax e-	S/N per spectral bin	Eff. %	Obj e-	Sky e-	Imax e-	S/N per spectral bin
94	1.1	4.33e+04	0.168	8.6e+03	2.1e+02	496.58	0.0025	2.1	7.25e+04	0.277	1.4e+04	2.7e+02	1	2.91e+04	0.114	5.8e+03	1.7e+02
95	1.1	4.08e+04	0.171	8.1e+03	2e+02	491.35	0.0025	2.2	7.42e+04	0.285	1.5e+04	2.7e+02	1.1	3.03e+04	0.118	6e+03	1.7e+02
96	1.1	4.41e+04	0.17	8.7e+03	2.1e+02	486.23	0.0025	2.2	4.22e+04	0.287	8.4e+03	2e+02	1.1	2.87e+04	0.12	5.7e+03	1.7e+02
97	1.1	4.87e+04	0.169	9.7e+03	2.2e+02	481.22	0.0025	2.3	7.86e+04	0.286	1.6e+04	2.8e+02	1.1	3.12e+04	0.12	6.2e+03	1.8e+02
98	1.2	5.03e+04	0.171	1e+04	2.2e+02	476.30	0.0024	2.3	8.27e+04	0.287	1.6e+04	2.9e+02	1.1	3.45e+04	0.12	6.8e+03	1.9e+02
99	1.2	5.34e+04	0.173	1.1e+04	2.3e+02	471.49	0.0024	2.4	8.74e+04	0.29	1.7e+04	3e+02	1.2	3.58e+04	0.122	7.1e+03	1.9e+02
100	1.2	5.48e+04	0.174	1.1e+04	2.3e+02	466.77	0.0024	2.5	9.11e+04	0.293	1.8e+04	3e+02	1.2	3.82e+04	0.123	7.6e+03	1.9e+02
101	1.3	5.61e+04	0.174	1.1e+04	2.4e+02	462.15	0.0024	2.5	9.44e+04	0.294	1.9e+04	3.1e+02	1.2	3.93e+04	0.124	7.8e+03	2e+02
102	1.3	5.58e+04	0.17	1.1e+04	2.4e+02	457.62	0.0023	2.5	9.54e+04	0.292	1.9e+04	3.1e+02	1.3	4.03e+04	0.125	8e+03	2e+02
103	1.3	5.75e+04	0.165	1.1e+04	2.4e+02	453.18	0.0023	2.5	9.62e+04	0.285	1.9e+04	3.1e+02	1.3	4.03e+04	0.123	8e+03	2e+02
104	1.2	5.59e+04	0.159	1.1e+04	2.4e+02	448.82	0.0023	2.5	9.57e+04	0.276	1.9e+04	3.1e+02	1.3	4.17e+04	0.119	8.3e+03	2e+02
105	1.2	5.6e+04	0.155	1.1e+04	2.4e+02	444.54	0.0023	2.5	9.6e+04	0.268	1.9e+04	3.1e+02	1.2	4.06e+04	0.116	8.1e+03	2e+02
106	1.2	5.4e+04	0.15	1.1e+04	2.3e+02	440.35	0.0023	2.4	9.5e+04	0.261	1.9e+04	3.1e+02	1.2	4.09e+04	0.113	8.1e+03	2e+02
107	1.2	2.64e+04	0.145	5.2e+03	1.6e+02	436.23	0.0022	2.4	8.45e+04	0.252	1.7e+04	2.9e+02	1.2	3.95e+04	0.11	7.8e+03	2e+02
108	1.2	5.15e+04	0.139	1e+04	2.3e+02	432.19	0.0022	2.4	8.27e+04	0.243	1.6e+04	2.9e+02	1.2	1.94e+04	0.106	3.8e+03	1.4e+02
109	1.2	5.31e+04	0.134	1.1e+04	2.3e+02	428.22	0.0022	2.3	9.38e+04	0.235	1.9e+04	3.1e+02	1.2	3.79e+04	0.102	7.5e+03	1.9e+02
110	1.1	5.31e+04	0.129	1.1e+04	2.3e+02	424.33	0.0022	2.3	9.02e+04	0.226	1.8e+04	3e+02	1.2	3.92e+04	0.099	7.8e+03	2e+02
111	1.1	5.02e+04	0.123	1e+04	2.2e+02	420.51	0.0022	2.2	9.12e+04	0.216	1.8e+04	3e+02	1.1	3.93e+04	0.0952	7.8e+03	2e+02
112	1.1	4.93e+04	0.117	9.8e+03	2.2e+02	416.75	0.0021	2.2	8.69e+04	0.206	1.7e+04	2.9e+02	1.1	3.73e+04	0.0911	7.4e+03	1.9e+02
113	1	2.85e+04	0.112	5.7e+03	1.7e+02	413.06	0.0021	2.1	7.61e+04	0.197	1.5e+04	2.8e+02	1.1	3.67e+04	0.087	7.3e+03	1.9e+02
114	1	4.18e+04	0.106	8.3e+03	2e+02	409.44	0.0021	2	4.69e+04	0.188	9.3e+03	2.2e+02	1	2.13e+04	0.0832	4.2e+03	1.5e+02
115	0.97	4.49e+04	0.101	8.9e+03	2.1e+02	405.88	0.0021	2	7.76e+04	0.179	1.5e+04	2.8e+02	1	3.13e+04	0.0795	6.2e+03	1.8e+02
116	0.96	4.34e+04	0.0978	8.6e+03	2.1e+02	402.38	0.0021	1.9	7.71e+04	0.172	1.5e+04	2.8e+02	0.97	3.37e+04	0.076	6.7e+03	1.8e+02
117	0.92	1.71e+04	0.0926	3.4e+03	1.3e+02	398.94	0.0021	1.9	6.7e+04	0.166	1.3e+04	2.6e+02	0.96	3.27e+04	0.0736	6.5e+03	1.8e+02
118	0.87	3.34e+04	0.0864	6.6e+03	1.8e+02	395.55	0.002	1.8	5.48e+04	0.156	1.1e+04	2.3e+02	0.92	1.29e+04	0.0699	2.6e+03	1.1e+02
119	0.82	2.7e+04	0.08	5.4e+03	1.6e+02	392.23	0.002	1.7	6.36e+04	0.145	1.3e+04	2.5e+02	0.87	2.52e+04	0.0654	5e+03	1.6e+02
120	0.77	2.94e+04	0.0735	5.8e+03	1.7e+02	388.96	0.002	1.6	2.68e+04	0.134	5.3e+03	1.6e+02	0.82	2.05e+04	0.0607	4.1e+03	1.4e+02
121	0.72	1.63e+04	0.0672	3.2e+03	1.3e+02	385.74	0.002	1.5	5.03e+04	0.123	1e+04	2.2e+02	0.77	2.23e+04	0.0559	4.4e+03	1.5e+02
122	0.67	2.01e+04	0.0619	4e+03	1.4e+02	382.58	0.002	1.4	3.4e+04	0.113	6.7e+03	1.8e+02	0.72	1.24e+04	0.0512	2.5e+03	1.1e+02
123	0.64	1.36e+04	0.0577	2.7e+03	1.2e+02	379.47	0.002	1.3	2.21e+04	0.104	4.4e+03	1.5e+02	0.67	1.54e+04	0.0472	3e+03	1.2e+02
124	0.61	1.15e+04	0.0544	2.3e+03	1.1e+02	376.41	0.0019	1.2	2.21e+04	0.0979	4.4e+03	1.5e+02	0.64	1.04e+04	0.0442	2.1e+03	1e+02

If in the table the Imax appears on a red background it means that the CCD detector has reached saturation. Please choose a different input parameters setting.

 ASCII data     GIF plot

 ASCII data     GIF plot

 ASCII data     GIF plot

 ASCII data     GIF plot

 ASCII data     GIF plot

UVES Exposure Time Calculator

Near Ultraviolet-Visual-Near Infrared Spectroscopy Mode

Simulator Setup: