NICMOS Filter Summary
The following tables show the three NICMOS cameras' filters' properties. The properties of each filter were retrieved from the SYNPHOT server using the STSDAS.SYNPHOT.BANDPAR task. The SYNPHOT commands are summarized below. For further details please see the on-line help for BANDPAR. Here `INT' refers to an integral over wavelength, and `THRU' is the throughput of the filter at that wavelength. `LAM' is wavelength.
Central Wavelength = bandpar.pivwv
defined as PIVWV = SQRT(INT(THRU * LAM) / INT (THRU / LAM))
Mean Wavelength = bandpar.avgwv
defined as AVGWV = INT(THRU * LAM) / INT(THRU)
Peak Wavelength = bandpar.wpeak
defined as wavelength at peak throughput
FWHM = bandpar.fwhm
defined as FWHM = SQRT(8 * LOG(2)) * BANDW
Max Transmission = maximum transmission OF THE FILTER ONLY
(no other optical components) as measured pre-launch in the lab
Max Throughput = bandpar.tpeak
defined as peak bandpass throughput
Fraction = fraction of light falling on the central pixel
assuming the point source PSF is centered on that pixel
as estimated by Tiny Tim PSF simulations.
All data in these tables (except for the PSF-related `Fraction') are generated from the STScI CDBS tables, which are updated as more accurate information is obtained. The observer is strongly advised to regenerate these tables from the most up-to-date data in CDBS if the exact values are critical to planning observations. The SYNPHOT User's Guide (Bushouse, 1998) is the best guide on how to do this.
NIC 1 Filters
|
Filter |
Central |
Mean |
Peak |
FWHM |
Range |
Trans |
Thru |
Fraction |
|
F090M |
0.9041 |
0.9058 |
0.9176 |
0.1318 |
0.8 - 1.0 |
79.64 |
4.6174 |
0.150 |
|
F095N |
0.9537 |
0.9537 |
0.9564 |
0.0088 |
1% |
66.31 |
3.8254 |
0.136 |
|
F097N |
0.9716 |
0.9716 |
0.9739 |
0.0104 |
1% |
73.51 |
4.5612 |
0.131 |
|
F108N |
1.0816 |
1.0816 |
1.0790 |
0.0090 |
1% |
81.94 |
5.6077 |
0.111 |
|
F110M |
1.1026 |
1.1042 |
1.1294 |
0.1390 |
1.0-1.2 |
90.49 |
7.2642 |
0.108 |
|
F110W |
1.1292 |
1.1412 |
1.3430 |
0.3894 |
0.8-1.35 |
95.11 |
9.6072 |
0.113 |
|
F113N |
1.1298 |
1.1298 |
1.1312 |
0.0111 |
1% |
86.24 |
6.6160 |
0.102 |
|
F140W |
1.4399 |
1.4593 |
1.7775 |
0.5592 |
0.8-1.8 |
95.50 |
16.0600 |
0.0766 |
|
F145M |
1.4557 |
1.4569 |
1.5115 |
0.1384 |
1.35-1.55 |
94.03 |
12.0850 |
0.0640 |
|
F160W |
1.6071 |
1.6114 |
1.7730 |
0.2755 |
1.35-1.75 |
96.37 |
16.1670 |
0.0562 |
|
F164N |
1.6460 |
1.6461 |
1.6476 |
0.0142 |
1% |
93.41 |
13.5890 |
0.0534 |
|
F165M |
1.6489 |
1.6500 |
1.7122 |
0.1396 |
1.55-1.75 |
94.78 |
15.6350 |
0.0521 |
|
F166N |
1.6607 |
1.6607 |
1.6624 |
0.0145 |
1% |
90.12 |
13.8580 |
0.0505 |
|
F170M |
1.7067 |
1.7078 |
1.7888 |
0.1410 |
1.6-1.8 |
95.55 |
16.3380 |
0.0481 |
|
F187N |
1.8748 |
1.8748 |
1.8756 |
0.0158 |
1% |
88.93 |
16.2170 |
0.0411 |
|
F190N |
1.8986 |
1.8986 |
1.8942 |
0.0169 |
1% |
93.05 |
16.6510 |
0.0401 |
|
POL0S |
1.0602 |
1.0684 |
1.1435 |
0.3102 |
0.8-1.3 |
77.60 |
3.4483 |
0.048 |
Table 7: NICMOS 1 filters
NIC 2 Filters
|
Filter |
Central |
Mean |
Peak |
FWHM |
Range |
Trans |
Thru |
Fraction |
|
F110W |
1.1285 |
1.1402 |
1.3402 |
0.3844 |
0.8-1.4 |
94.90 |
11.7710 |
0.288 |
|
F160W |
1.6060 |
1.6103 |
1.7722 |
0.2772 |
1.4-1.8 |
96.59 |
18.5650 |
0.159 |
|
F165M |
1.6516 |
1.6527 |
1.7136 |
0.1395 |
1.55-1.75 |
95.36 |
18.4150 |
0.149 |
|
F171M |
1.7212 |
1.7214 |
1.7259 |
0.0584 |
1.68-1.75 |
95.15 |
17.7640 |
0.138 |
|
F180M |
1.7971 |
1.7973 |
1.8131 |
0.0563 |
1.765-1.835 |
93.40 |
18.4280 |
0.128 |
|
F187N |
1.8740 |
1.8740 |
1.8746 |
0.0159 |
1% |
88.91 |
18.3620 |
0.119 |
|
F187W |
1.8718 |
1.8732 |
1.8906 |
0.1707 |
1.75-2.0 |
87.97 |
18.0140 |
0.117 |
|
F190N |
1.9003 |
1.9004 |
1.9005 |
0.0147 |
1% |
93.22 |
19.2570 |
0.116 |
|
F204M |
2.0355 |
2.0357 |
2.0634 |
0.0799 |
1.99-2.09 |
91.77 |
21.9010 |
0.104 |
|
F205W |
2.0714 |
2.0795 |
2.3171 |
0.4314 |
1.75-2.35 |
98.14 |
29.5350 |
0.107 |
|
F207M |
2.0824 |
2.0829 |
2.0683 |
0.1069 |
2.0-2.15 |
96.40 |
20.7120 |
0.0976 |
|
F212N |
2.1213 |
2.1213 |
2.1228 |
0.0206 |
1% |
90.90 |
21.4380 |
0.0953 |
|
F215N |
2.1487 |
2.1487 |
2.1562 |
0.0187 |
1% |
85.91 |
21.0440 |
0.0933 |
|
F216N |
2.1641 |
2.1641 |
2.1668 |
0.0186 |
1% |
90.07 |
21.8620 |
0.0915 |
|
F222M |
2.2182 |
2.2188 |
2.1866 |
0.1205 |
2.15-2.3 |
89.90 |
22.2510 |
0.0881 |
|
F237M |
2.3696 |
2.3701 |
2.4338 |
0.1115 |
2.3-2.45 |
92.38 |
28.6910 |
0.0797 |
|
POL0L |
2.0007 |
2.0017 |
2.0750 |
0.1490 |
1.9-2.1 |
96.67 |
12.0740 |
0.33 |
Table 8: NICMOS 2 filters
NIC 3 Filters
|
Filter |
Central |
Mean |
Peak |
FWHM |
Range |
Trans |
Thru |
Fraction |
|
F108N |
1.0800 |
1.0800 |
1.0777 |
0.0112 |
1% |
75.82 |
6.1366 |
0.582 |
|
F110W |
1.1264 |
1.1388 |
1.3402 |
0.3964 |
0.8-1.4 |
94.90 |
10.3110 |
0.590 |
|
F113N |
1.1284 |
1.1284 |
1.1315 |
0.0106 |
1% |
84.81 |
7.3788 |
0.579 |
|
F150W |
1.5484 |
1.5658 |
1.7685 |
0.5522 |
1.1-1.9 |
97.67 |
18.6900 |
0.534 |
|
F160W |
1.6078 |
1.6120 |
1.7730 |
0.2761 |
1.4-1.8 |
96.59 |
17.8900 |
0.524 |
|
F164N |
1.6460 |
1.6461 |
1.6476 |
0.0142 |
1% |
86.27 |
14.9580 |
0.523 |
|
F166N |
1.6583 |
1.6583 |
1.6602 |
0.0139 |
1% |
87.24 |
15.1480 |
0.513 |
|
F175W |
1.8360 |
1.8635 |
2.2843 |
0.7605 |
1.2-2.3 |
96.58 |
28.7950 |
0.486 |
|
F187N |
1.8748 |
1.8748 |
1.8756 |
0.0158 |
1% |
88.91 |
17.8240 |
0.471 |
|
F190N |
1.9004 |
1.9004 |
1.9005 |
0.0147 |
1% |
93.22 |
19.2900 |
0.466 |
|
F196N |
1.9639 |
1.9639 |
1.9697 |
0.0177 |
1% |
93.74 |
20.2760 |
0.450 |
|
F200N |
1.9975 |
1.9975 |
2.0022 |
0.0196 |
1% |
91.75 |
19.7980 |
0.445 |
|
F212N |
2.1213 |
2.1213 |
2.1228 |
0.0206 |
1% |
90.90 |
21.1640 |
0.418 |
|
F215N |
2.1487 |
2.1487 |
2.1562 |
0.0187 |
1% |
85.91 |
20.7940 |
0.413 |
|
F222M |
2.2184 |
2.2190 |
2.1866 |
0.1204 |
2.15-2.3 |
89.9 |
22.0990 |
0.397 |
|
F240M |
2.3969 |
2.3976 |
2.4162 |
0.1384 |
2.3-2.5 |
92.43 |
28.5600 |
0.363 |
Table 9: NICMOS 3 filters