13.5 Tabular Data
13.5.1 TPG_TIME Values
The following table gives the legal TPG expose times (TPG_TIME) in seconds, needed to calculate legal exposure times in ACCUM and ACQ Modes. These values are approximated for simplicity, so that exposure times derived from them may be reduced by up to 1 msec.
Table 13.3: Quantized Legal NICMOS TPG Expose Times
| 0.000 |
0.014 |
0.021 |
0.028 |
0.035 |
| 0.042 |
0.050 |
0.057 |
0.064 |
0.071 |
| 0.078 |
0.085 |
0.100 |
0.107 |
0.114 |
| 0.128 |
0.143 |
0.157 |
0.172 |
0.186 |
| 0.207 |
0.229 |
0.250 |
0.272 |
0.301 |
| 0.329 |
0.358 |
0.394 |
0.437 |
0.473 |
| 0.523 |
0.573 |
0.630 |
0.688 |
0.759 |
| 0.831 |
0.910 |
0.996 |
1.096 |
1.197 |
| 1.318 |
1.440 |
1.584 |
1.734 |
1.906 |
| 2.085 |
2.286 |
2.508 |
2.752 |
3.017 |
| 3.311 |
3.626 |
3.978 |
4.365 |
4.781 |
| 5.246 |
5.755 |
6.307 |
6.917 |
7.583 |
| 8.314 |
9.117 |
9.999 |
10.959 |
12.020 |
| 13.181 |
14.450 |
15.848 |
17.375 |
19.052 |
| 20.887 |
22.908 |
25.116 |
27.539 |
30.198 |
| 33.108 |
36.305 |
39.811 |
43.645 |
47.860 |
| 52.476 |
57.544 |
63.092 |
69.178 |
75.858 |
| 83.177 |
91.198 |
100.000 |
109.648 |
120.221 |
| 131.826 |
144.542 |
158.484 |
173.780 |
190.546 |
| 208.925 |
229.082 |
251.188 |
275.423 |
299.980 |
| 301.994 |
331.125 |
359.998 |
363.073 |
398.103 |
| 419.994 |
436.516 |
478.628 |
479.990 |
524.805 |
| 575.439 |
630.956 |
691.826 |
758.575 |
831.760 |
| 839.989 |
899.985 |
912.006 |
959.981 |
1000.000 |
| 1079.995 |
1096.474 |
1199.987 |
1202.259 |
1259.983 |
| 1318.252 |
1319.980 |
1379.997 |
1439.993 |
1445.434 |
| 1559.986 |
1584.887 |
1679.999 |
1737.795 |
1739.996 |
| 1859.988 |
1905.455 |
1919.984 |
2039.998 |
2089.292 |
| 2099.994 |
2219.986 |
2279.983 |
2290.864 |
2339.979 |
| 2399.996 |
2459.993 |
2511.882 |
2519.989 |
2639.981 |
| 2699.999 |
2754.225 |
2759.995 |
2819.991 |
2879.987 |
| 2939.983 |
2999.980 |
3019.950 |
3059.997 |
3179.989 |
| 3239.986 |
3299.982 |
3311.307 |
3359.999 |
3479.992 |
| 3539.988 |
3599.984 |
3630.778 |
3981.071 |
4365.154 |
| 4786.295 |
5248.072 |
5754.398 |
|
|
13.5.2 NICMOS Apertures
Each camera has two apertures defined near the center of the FOV. Only exposures using the corresponding configuration (NIC1, NIC2, NIC3) may use a given cameraÕs apertures. The CAMERA-FOCUS optional parameter may be used to select a compromise focus position not optimized for either NIC1 or NIC2, but intended to work well with both.
One of the two FOV-center apertures (NIC1, NIC2, NIC3) is an optimal location near the center of the FOV considering detector efficiency and pixel quality, which will be updated by the STScI as the detectors change on orbit. One aperture in each camera (NIC1ÐFIX, NIC2ÐFIX, NIC3ÐFIX) corresponds to a fixed pixel at or near the center of the detector array, which will not change on orbit.
The aperture NIC2ÐCORON is the location of the coronographic spot in the NIC2 camera. It will be used by science exposures which have been preceded by a target acquisition exposure using the NIC2ÐACQ aperture or by a real-time acquisition image obtained using the NIC2-CORON aperture. The acquisition aperture will be slightly offset from the coronographic aperture, but within the acquisition detector subarray.
Table 13.4: NICMOS Apertures
| Aperture |
Required Configuration |
Description |
| NIC1 NIC1ÐFIX |
NIC1 |
Optimum Center of NIC1 FOV Geometric Center of NIC1 FOV |
| NIC2 NIC2ÐACQ NIC2ÐCORON NIC2ÐFIX |
NIC2 |
Optimum Center of NIC2 FOV Coronographic Acquisition Aperture NIC2 Coronographic Spot Geometric Center of NIC2 FOV |
| NIC3 NIC3ÐFIX |
NIC3 |
Optimum Center of NIC3 FOV Geometric Center of NIC3 FOV |
13.5.3 NICMOS Spectral Elements
The following Spectral Elements, including filters, polarizers, and grisms, are available for the three NICMOS cameras. Only exposures using the corresponding configuration (NIC1, NIC2, NIC3) may use a given cameraÕs spectral elements. See the NICMOS Instrument Handbook for details.
Table 13.5: Spectral Elements for the NICMOS
| Name |
Wheel Position |
Central Wavelength (microns) |
Bandwidth (microns) |
Description |
| Config = NIC1 |
| F090M F095N F097N F108N F110M F110W F113N F140W F145M F160W F164N F165M F166N F170M F187N F190N |
18 19 20 16 17 2 15 6 13 14 11 10 12 7 8
9 |
0.900 0.953 0.970 1.083 1.100 1.100 1.130 1.400 1.450 1.600 1.644 1.650 1.660 1.700 1.875 1.900 |
0.800 Ð 1.000 1% 1% 1% 1.000 Ð 1.200 0.800 Ð 1.400 1% 1.000 Ð 1.800 1.350 Ð 1.550 1.400 Ð 1.800 1% 1.550 Ð 1.750 1% 1.600 Ð 1.800 1% 1% |
S III S III Continuum He I
He I Continuum Broad Band Water
Fe II
Fe II Continuum
Paschen Alpha Paschen Alpha Continuum |
| POL0S POL120S POL240S |
5 4 3 |
1.050 1.050 1.050 |
0.810 Ð 1.290 0.810 Ð 1.290 0.810 Ð 1.290 |
Short Polarizer Ð 0 deg Short Polarizer Ð 120 deg Short Polarizer Ð 240 deg |
| BLANK |
1 |
N/A |
N/A |
Blank (opaque) |
| Config = NIC2 |
| F110W F160W F165M F171M F180M F187N F187W F190N F204M F205W F207M F212N F215N F216N F222M F237M |
18 19 20 7 8 10 9 11 2 17 6 12 13 14 15 16 |
1.100 1.600 1.650 1.715 1.800 1.875 1.875 1.900 2.040 2.050 2.075 2.121 2.150 2.165 2.225 2.375 |
0.800 Ð 1.400 1.400 Ð 1.800 1.550 Ð 1.750 1.680 Ð 1.750 1.765 Ð 1.835 1% 1.750 Ð 2.000 1% 1.990 Ð 2.090 1.750 Ð 2.350 2.000 Ð 2.150 1% 1% 1% 2.150 Ð 2.300 2.300 Ð 2.450 |
Minimum Background
HCO2 & C2 Continuum HCO2 & C2 Paschen Alpha
Paschen Alpha Continuum Methane Imaging Broad Band
H2 H2 & Brackett Gamma Continuum Brackett Gamma CO Continuum CO Band |
| POL0L POL120L POL240L |
3 4 5 |
2.050 2.050 2.050 |
1.900 Ð 2.100 1.900 Ð 2.100 1.900 Ð 2.100 |
Long Polarizer Ð 0 deg Long Polarizer Ð 120 deg Long Polarizer Ð 240 deg |
| BLANK |
1 |
N/A |
N/A |
Blank (opaque) |
| Config = NIC3 |
| F108N F110W F113N F150W F160W F164N F166N F175W F187N F190N F196N F200N F212N F215N F222M F240M |
4 2 5 9 6 8 7 20 11 12 13 14 18 19 15 16 |
1.083 1.100 1.130 1.500 1.600 1.644 1.660 1.750 1.875 1.900 1.962 2.000 2.121 2.150 2.225 2.400 |
1% 0.800 Ð 1.400 1% 1.100 Ð 1.900 1.400 Ð 1.800 1% 1% 1.200 Ð 2.300 1% 1% 1% 1% 1% 1% 2.150 Ð 2.300 2.300 Ð 2.500 |
He I
He I Continuum Grism B Continuum Minimum Background Fe II Fe II Continuum
Paschen Alpha Paschen Alpha Continuum SI VI SI VI Continuum H2 H2 Continuum CO Continuum CO Band |
| G096 G141 G206 |
3 10 17 |
0.967 1.414 2.067 |
0.800 Ð 1.200 1.100 Ð 1.900 1.400 Ð 2.500 |
Grism A Grism B Grism C |
| BLANK |
1 |
N/A |
N/A |
Blank (opaque) |
