As only part of a single Echelle order is recorded at a given time on
the CCD the spectral bandwidth of the CES is quite limited. It ranges from
22.9 Å in the far blue to 67.7 Å in the far red region of the
wavelength regime observable with the CES. The table lists the spectral
bandwidth (fifth column) at the blaze wavelengths (third column) for each
order (first column). Also listed are the limiting wavelengths for each
order (second and fourth column labelled "Min" and "Max"). At the limiting
wavelengths the instrumental efficiency drops down to 50% with respect to
blaze maximum.
|
The CES spectral format |
|
| Order |
Wavelength |
Spectrum |
|
Order |
Wavelength |
Spectrum |
| # | Min |
Blaze | Max |
length (Å) |
|
# | Min |
Blaze | Max |
length (Å) |
| |
| |
|
| |
| |
|
| 65 | 3459.0 |
3479.3 | 3512.9 |
22.9 |
|
64 | 3513.0 |
3533.7 | 3567.9 |
23.3 |
| 63 | 3568.0 |
3589.8 | 3624.9 |
23.6 |
|
62 | 3625.0 |
3647.7 | 3682.9 |
24.1 |
| 61 | 3683.0 |
3707.4 | 3741.9 |
24.4 |
|
60 | 3742.0 |
3769.2 | 3806.9 |
24.8 |
| 59 | 3807.0 |
3833.1 | 3871.9 |
25.3 |
|
58 | 3872.0 |
3899.2 | 3938.9 |
25.9 |
| 57 | 3939.0 |
3967.6 | 4008.9 |
26.2 |
|
56 | 4009.0 |
4038.5 | 4080.9 |
26.6 |
| 55 | 4081.0 |
4111.9 | 4154.9 |
27.1 |
|
54 | 4155.0 |
4188.0 | 4231.9 |
27.5 |
| 53 | 4232.0 |
4267.1 | 4312.9 |
28.1 |
|
52 | 4313.0 |
4349.1 | 4396.9 |
28.6 |
| 51 | 4397.0 |
4434.4 | 4483.9 |
29.2 |
|
50 | 4484.0 |
4523.1 | 4572.9 |
29.8 |
| 49 | 4573.0 |
4615.4 | 4666.9 |
30.4 |
|
48 | 4667.0 |
4711.5 | 4765.9 |
31.0 |
| 47 | 4766.0 |
4811.8 | 4867.9 |
31.7 |
|
46 | 4868.0 |
4916.4 | 4973.9 |
32.3 |
| 45 | 4974.0 |
5025.7 | 5084.9 |
33.1 |
|
44 | 5085.0 |
5139.9 | 5201.9 |
33.8 |
| 43 | 5202.0 |
5259.4 | 5324.9 |
34.6 |
|
42 | 5325.0 |
5384.6 | 5452.9 |
35.5 |
| 41 | 5453.0 |
5516.0 | 5587.9 |
36.2 |
|
40 | 5588.0 |
5653.9 | 5727.9 |
37.1 |
| 39 | 5728.0 |
5798.8 | 5875.9 |
38.2 |
|
38 | 5876.0 |
5951.4 | 6031.9 |
39.1 |
| 37 | 6032.0 |
6112.3 | 6195.9 |
40.3 |
|
36 | 6196.0 |
6282.1 | 6369.9 |
41.4 |
| 35 | 6370.0 |
6461.6 | 6557.9 |
42.6 |
|
34 | 6558.0 |
6651.6 | 6747.9 |
43.8 |
| 33 | 6748.0 |
6853.2 | 6954.9 |
45.1 |
|
32 | 6955.0 |
7067.3 | 7173.9 |
46.5 |
| 31 | 7174.0 |
7295.3 | 7407.9 |
48.0 |
|
30 | 7408.0 |
7538.5 | 7656.9 |
49.6 |
| 29 | 7657.0 |
7798.4 | 7924.9 |
51.3 |
|
28 | 7925.0 |
8076.9 | 8209.9 |
53.2 |
| 27 | 8210.0 |
8376.1 | 8517.9 |
55.2 |
|
26 | 8518.0 |
8698.2 | 8849.9 |
57.3 |
| 25 | 8850.0 |
9046.2 | 9208.9 |
59.5 |
|
24 | 9209.0 |
9423.1 | 9596.9 |
62.0 |
| 23 | 9597.0 |
9832.8 | 10019.9 |
64.7 |
|
22 | 10020.0 |
10279.7 | --- |
67.7 |
|
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