The spectral characteristics of the NICMOS flight filters and/or witness samples were measured at cryogenic (150K) temperature and normal incidence at Ball Aerospace. All filters had the spectral transmission measured from 500 to 2700 nm with a slit bandwidth of 5 nm and a step size of 1 nm. These low resolution scans were for determining spectral leaks, etc. No significant out-of-band leaks were found. The filters were then rescanned at higher resolution, 2.5 nm slit bandwidth and 0.5 nm step size or 1.0 nm slit bandwidth and 0.2 nm step size respectively for the broader and narrower filters. Characteizing data from high resolution scans are tabulated below. For additional information on test/measurement procedures see NICMOS/SER OPR-155.
CAM FILTER Central Mean Peak FWHM MaxTr 1 f090m 0.9003 0.8970 0.9175 0.1885 79.64 1 f095n 0.9538 0.9536 0.9508 0.0088 66.31 1 f097n 0.9717 0.9715 0.9740 0.0094 73.51 1 f108n 1.0817 1.0816 1.0790 0.0094 81.94 3 f108n 1.0800 1.0799 1.0776 0.0096 75.82 1 f110m 1.1013 1.1003 1.1295 0.1995 90.49 1 f110w 1.0985 1.1022 1.2760 0.5920 95.11 2,3 f110w 1.0998 1.1035 1.2035 0.5915 94.90 1 f113n 1.1297 1.1298 1.1312 0.0110 86.24 3 f113n 1.1283 1.1283 1.1316 0.0110 84.81 1 f140w 1.3973 1.3993 1.2240 0.7965 95.50 1 f145m 1.4513 1.4524 1.5100 0.1965 94.03 3 f150w 1.5035 1.5069 1.6355 0.8020 97.67 1 f160w 1.5960 1.5947 1.5830 0.4000 96.37 2,3 f160w 1.5940 1.5931 1.5820 0.4030 96.59 1 f164n 1.6353 1.6354 1.6378 0.0166 93.41 3 f164n 1.6461 1.6460 1.6476 0.0170 86.27 1 f165m 1.6438 1.6446 1.5735 0.1985 94.78 2 f165m 1.6463 1.6473 1.5540 0.1985 95.36 1 f166n 1.6606 1.6606 1.6622 0.0168 90.12 3 f166n 1.6582 1.6582 1.6602 0.0164 87.24 1 f170m 1.7025 1.7032 1.6330 0.2030 95.55 2 f171m 1.7206 1.7209 1.7224 0.0712 95.15 3 f175w 1.7530 1.7508 1.9070 1.0940 96.58 2 f180m 1.7968 1.7971 1.8108 0.0684 93.40 1 f187n 1.8748 1.8748 1.8756 0.0188 88.93 2,3 f187n 1.8740 1.8738 1.8746 0.0192 88.91 2 f187w 1.8722 1.8708 1.8930 0.2436 87.97 1 f190n 1.8987 1.8986 1.8942 0.0174 93.05 2,3 f190n 1.9005 1.9003 1.9004 0.0174 93.22 3 f196n 1.9641 1.9639 1.9698 0.0186 93.74 3 f200n 1.9973 1.9974 1.9996 0.0206 91.75 2 f204m 2.0313 2.0327 2.0342 0.1050 91.77 3 f205m 2.0515 2.0485 1.9615 0.4900 96.56 2 f205w 2.0428 2.0406 1.9560 0.6125 98.14 2 f207m 2.0827 2.0786 2.0252 0.1522 96.40 2,3 f212n 2.1211 2.1213 2.1228 0.0206 90.90 2,3 f215n 2.1488 2.1487 2.1562 0.0200 85.91 2 f216n 2.1642 2.1641 2.1668 0.0208 90.07 2,3 f222m 2.2160 2.2164 2.1804 0.1432 89.90 2 f237m 2.3677 2.3694 2.3852 0.1546 92.38 3 f240m 2.3978 2.3977 2.3155 0.1975 92.43 2 polxL 1.9943 1.9946 1.9100 0.2025 96.67 1 polxS 1.0450 1.0384 1.0245 0.4750 77.60
The following list of NICMOS Spectral filters gives, for each camera, the position of the filter in the filter wheel (##), the designation of the element given by the manufacturer, Optical Corporation of America (MMMMMM), the designation of the filter as per the STScI proposal instructions (PPPPPP), and a general description of the filter. Each listing links to a file giving the filter transmissivity, measured as described above.
To obtain a tabular listing of a filter's response functions click on it's index entry.
To obtain a graphical representation of a filter's transmissivity function click on [GRAPH] to the left of it's index entry.
CAMERA 1
## MMMMMM PPPPPP DESCRIPTION OF SPECTRAL ELEMENT
[GRAPH] 2 C1F3 F097N S III Continuum [GRAPH] 3 C1F2 F095N S III [GRAPH] 4 C1F1 F090M 0.8-1.0 microns [GRAPH] 5 C1F7 F110M 1.0-1.2 microns [GRAPH] 6 C1F5 F108N He I [GRAPH] 7 C1F8 F113N He I Continuum [GRAPH] 8 C1F11 F160W 1.4-1.8 microns [GRAPH] 9 C1F10 F145M Water [GRAPH] 10 C1F14 F166N Fe II Continuum [GRAPH] 11 C1F12 F164N Fe II [GRAPH] 12 C1F13 F165M 1.55-1.75 microns [GRAPH] 13 C1F17 F190N Paschen Alpha Continuum [GRAPH] 14 C1F16 F187N Paschen Alpha [GRAPH] 15 C1F15 F170M 1.6-1.8 microns [GRAPH] 16 C1F19 F140W 1.0-1.8 microns (Broad Band) [GRAPH] 17 C1F17 POL0S 0.81-1.29 micron Polarizer - 0 deg [GRAPH] 18 C1F17 POL120S 0.81-1.29 micron Polarizer - 120 deg [GRAPH] 19 C1F17 POL240S 0.81-1.29 micron Polarizer - 240 deg [GRAPH] 20 C1F20 F110W 0.8-1.4 microns
CAMERA 2
## MMMMMM PPPPPP DESCRIPTION OF SPECTRAL ELEMENT
[GRAPH] 2 C2F1 F165M 1.55-1.75 microns [GRAPH] 3 C23F2 F160W 1.4-1.8 microns (Minimum Background) [GRAPH] 4 C23F1 F110W 0.8-1.4 microns [GRAPH] 5 C2F6 F205W 1.75-2.35 microns (Broad Band) [GRAPH] 6 C2F11 F237M CO [GRAPH] 7 C2F10 F222M CO Continuum [GRAPH] 8 C2F9 F216N Brackett Gamma [GRAPH] 9 C23F6 F215N H2 & Brackett Gamma Continuum [GRAPH] 10 C23F5 F212N H2 [GRAPH] 11 C23F4 F190N Paschen Alpha Continuum [GRAPH] 12 C23F3 F187N Paschen Alpha [GRAPH] 13 C2F4 F187W 1.75-2.0 microns [GRAPH] 14 C2F3 F180M HCO2 & C2 [GRAPH] 15 C2F2 F171M HCO2 & C2 Continuum [GRAPH] 16 C2F8 F207M 2.0-2.15 microns [GRAPH] 17 C1F17 POL0L 1.9 - 2.1 micron Polarizer - 0 deg [GRAPH] 18 C1F17 POL120L 1.9 - 2.1 micron Polarizer - 120 deg [GRAPH] 19 C1F17 POL240L 1.9 - 2.1 micron Polarizer - 240 deg [GRAPH] 20 C2F20 F204M 1.99-2.09 microns Methane
CAMERA 3
## MMMMMM PPPPPP DESCRIPTION OF SPECTRAL ELEMENT
[GRAPH] 2 C3F6 F175W 1.2-2.3 microns [GRAPH] 3 C23F6 F215N H2 Continuum [GRAPH] 4 C23F5 F212N H2 [GRAPH] 6 C3F10 F240M CO Band [GRAPH] 7 C3F9 F222M CO Continuum [GRAPH] 8 C3F8 F200N Si VI Continuum [GRAPH] 9 C3F7 F196N Si VI [GRAPH] 10 C23F4 F190N Paschen Alpha Continuum [GRAPH] 11 C23F3 F187N Paschen Alpha [GRAPH] 13 C3F3 F150W Grism B Continuum [GRAPH] 14 C3F4 F164N Fe II [GRAPH] 15 C3F5 F166N Fe II Continuum [GRAPH] 16 C23F2 F160W 1.4-1.8 microns (Minimum Background) [GRAPH] 17 C3F2 F113N He I Continuum [GRAPH] 18 C3F1 F108N He [GRAPH] 20 C23F1 F110W 0.8-1.4 microns