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Data table for comparison of JWST low-res (R~100) spectroscopy to other observatories. v1.4, 10/2014

# Data table for comparison of JWST low-res (R~100) spectroscopy to other observatories.  
# v1.4, 10/2014, by Jane Rigby.
# If you have comments or questions, please write to Jane.R.Rigby@nasa.gov
# Columns are:  
#  (1) name of filter and/or band
#  (2) wavelength (micron)
#  (3) limiting continuum flux density (Jy), per spectral resoln element, that can be detected in a point source at SNR=10 in 10^4 s.
#   (4) Not used
#  (5) Resolution R, where R= lambda / (delta lambda)
#  (6) Code for instrument/observatory.
#      0=nirspec, 1=NIRCAM, 2=MIRI, 3=NIRISS,      4=HST, 5=WISE, 6=Spitzer, 9=Keck, 10=gemini, 11=VLT
#  (7) Reference for the sensitivity. 
#
MIRI  7.5   2.9E-6           ---                90     2.1  MIRI Functional Requirements Document, Appendix C
NIRSpec 3.0 1.3E-7           ---               100     0    ISIM requirement ISIM-153 
NIRISS  1.4 4.11E-7          ----              150     3    converted from NIRISS functional requirement

#     Above is a *required* MIRI sensitivity.  Below are estimates of relative performance at other wavelengths.  
MIRI   5       0.820E-6      ---  	       38.9    2  estimate, Alistair Glasse, priv com 1/2013
MIRI   7       2.553E-6	     ---  	       87.4    2  estimate, Alistair Glasse, priv com 1/2013
MIRI   7.5     3.174E-6	     ---  	       99.6    2  estimate, Alistair Glasse, priv com 1/2013
MIRI   8       3.971E-6	     ---  	       111.7   2  estimate, Alistair Glasse, priv com 1/2013
MIRI   10      8.119E-6	     ---  	       160.3   2  estimate, Alistair Glasse, priv com 1/2013


#Spitzer IRS, low-resolution gratings.  
SL2   5.5   0.12E-3          ----              60-120  6  SENSPET (Spitzer's exposure time calculator)
SL2   6.5   0.13E-3          ----              60-120  6  SENSPET
SL2   7.5   0.20E-3          ----              60-120  6  SENSPET
SL2   8.5   0.14E-3          ----              60-120  6  SENSPET
SL1   9.0   0.13E-3          ----              60-120  6  SENSPET
SL1   12    0.14E-3          ----              60-120  6  SENSPET
SL1   13.5  0.17E-3          ----              60-120  6  SENSPET
LL2   15    0.53E-3          ----              60-120  6  SENSPET
LL2   17    0.51E-3          ----              60-120  6  SENSPET
LL2   20    1.3E-3           ----              60-120  6  SENSPET
LL1   21    1.6E-3           ----              60-120  6  SENSPET
LL1   23    0.89E-3          ----              60-120  6  SENSPET
LL1   26    0.79E-3          ----              60-120  6  SENSPET

#HST:
# WFC grism ETC, used flat continuum in fnu (the def. of AB mags), normalized to fnu at given wavelength for WFC;
#    normalized to SDSS/R in AB magnitudes for ACS ETC since that's the only relevant option.
ACS-G800L 0.7  7.8E-7       ----             ???   4  # Table 6.4 of the ACS instrument handbook
ACS-G800L 0.7  5.0E-7       ----             ???   4  # ACS ETC, Request ID ACS.sp.608503 
WFC3-G102 1.02 2.85E-6      ----             200   4  # WFC3 ETC, Request ID WFC3IR.sp.608490
WFC3-G141 1.4  2.25E-6      ----             130   4  # WFC3 ETC, Request ID WFC3IR.sp.608485