Observed Energy Distribution: Q0804+761 log nu0 log nu1 log nu2 log nuFnu Date Aper Filter Instrument Ref (Hz) (Hz) (Hz) (Jy Hz) (") or or Detector Telescope 9.70 9.70 9.70 6.69( + 0.03 - 0.03 ) 1983 Nov 18.0 - VLA AJ098,1195 12.48 12.40 12.56 < 12.18 1983 300.0 IRAS4 IRAS Table11 12.48 12.40 12.56 < 11.98 1983 300.0 IRAS4 IRAS ApJ347,029 12.70 12.57 12.87 11.90( + 0.10 - 0.12 ) 1983 300.0 IRAS3 IRAS Table11 12.70 12.57 12.87 11.98( + 0.09 - 0.11 ) 1983 300.0 IRAS3 IRAS ApJ347,029 13.08 13.00 13.20 12.48( + 0.05 - 0.06 ) 1983 300.0 IRAS2 IRAS Table11 13.08 13.00 13.20 12.40( + 0.05 - 0.06 ) 1983 300.0 IRAS2 IRAS ApJ347,029 13.40 13.30 13.55 12.63( + 0.05 - 0.05 ) 1983 300.0 IRAS1 IRAS Table11 13.40 13.30 13.55 12.68( + 0.06 - 0.07 ) 1983 300.0 IRAS1 IRAS ApJ347,029 13.47 13.36 13.56 12.54( + 0.07 - 0.07 ) 1981 Nov 8 5.0 N Hale ApJS63,615 13.90 13.86 13.94 12.63( + 0.04 - 0.04 ) 1981 Nov 8 5.0 L' Hale ApJS63,615 13.93 13.88 14.00 12.70( + 0.07 - 0.07 ) 1984 Sep 14 5.0 L MMT Table9 13.93 13.88 14.00 12.60( + 0.02 - 0.02 ) 1986 Sep 23 5.0 L MMT Table9 14.13 14.11 14.19 12.51( + 0.02 - 0.02 ) 1984 Sep 14 5.0 K MMT Table9 14.13 14.11 14.19 12.51( + 0.02 - 0.02 ) 1986 Sep 23 5.0 K MMT Table9 14.13 14.11 14.19 12.52( + 0.03 - 0.03 ) 1980 Jun 1 5.0 K Hale ApJS63,615 14.13 14.11 14.19 12.56( + 0.03 - 0.03 ) 1981 Nov 8 5.0 K Hale ApJS63,615 14.26 14.23 14.31 12.29( + 0.02 - 0.02 ) 1984 Sep 14 5.0 H MMT Table9 14.26 14.23 14.31 12.29( + 0.02 - 0.02 ) 1986 Sep 23 5.0 H MMT Table9 14.26 14.23 14.31 12.36( + 0.03 - 0.03 ) 1980 Jun 1 5.0 H Hale ApJS63,615 14.26 14.23 14.31 12.34( + 0.03 - 0.03 ) 1981 Nov 8 5.0 H Hale ApJS63,615 14.38 14.35 14.45 12.24( + 0.02 - 0.02 ) 1984 Sep 14 5.0 J MMT Table9 14.38 14.35 14.45 12.25( + 0.02 - 0.02 ) 1986 Sep 23 5.0 J MMT Table9 14.38 14.35 14.45 12.30( + 0.03 - 0.03 ) 1980 Jun 1 5.0 J Hale ApJS63,615 14.38 14.35 14.45 12.31( + 0.03 - 0.03 ) 1981 Nov 8 5.0 J Hale ApJS63,615 14.52 14.46 14.58 12.34( + 0.02 - 0.02 ) 1986 Feb 3 14.0 I MtHopk(24in) Table6 14.57 14.56 14.57 12.35( + 0.01 - 0.01 ) 1980 Nov 15 15.0 AB Hale ApJS63,615 14.58 14.57 14.58 12.35( + 0.02 - 0.02 ) 1980 Nov 15 15.0 AB Hale ApJS63,615 14.59 14.58 14.60 12.39( + 0.01 - 0.01 ) 1980 Nov 15 15.0 AB Hale ApJS63,615 14.63 14.57 14.70 12.35( + 0.01 - 0.01 ) 1986 Feb 3 14.0 R MtHopk(24in) Table6 14.65 14.64 14.65 12.38( + 0.01 - 0.01 ) 1980 Nov 15 15.0 AB Hale ApJS63,615 14.66 14.65 14.66 12.37( + 0.00 - 0.00 ) 1980 Nov 15 15.0 AB Hale ApJS63,615 14.67 14.66 14.68 12.37( + 0.00 - 0.00 ) 1980 Nov 15 15.0 AB Hale ApJS63,615 14.69 14.68 14.70 12.35( + 0.00 - 0.00 ) 1980 Nov 15 15.0 AB Hale ApJS63,615 14.70 14.70 14.71 12.34( + 0.01 - 0.01 ) 1980 Nov 15 15.0 AB Hale ApJS63,615 14.72 14.71 14.73 12.38( + 0.02 - 0.02 ) 1980 Nov 15 15.0 AB Hale ApJS63,615 14.74 14.70 14.78 12.42( + 0.01 - 0.01 ) 1986 Feb 3 14.0 V MtHopk(24in) Table6 14.78 14.78 14.79 12.50( + 0.03 - 0.03 ) 1980 Nov 15 15.0 AB Hale ApJS63,615 14.83 14.78 14.89 12.44( + 0.01 - 0.01 ) 1986 Feb 3 14.0 B MtHopk(24in) Table6 14.86 14.85 14.86 12.60( + 0.00 - 0.00 ) 1980 Nov 15 15.0 AB Hale ApJS63,615 14.88 14.87 14.89 12.63( + 0.00 - 0.00 ) 1980 Nov 15 15.0 AB Hale ApJS63,615 14.92 14.92 14.93 12.73( + 0.01 - 0.01 ) 1980 Nov 15 15.0 AB Hale ApJS63,615 14.94 14.93 14.94 12.73( + 0.00 - 0.00 ) 1980 Nov 15 15.0 AB Hale ApJS63,615 14.95 14.94 14.96 12.71( + 0.02 - 0.02 ) 1980 Nov 15 15.0 AB Hale ApJS63,615 14.97 14.96 14.97 12.78( + 0.03 - 0.03 ) 1982 Jul 10 15.0 - LWR13645 RDAF 14.97 14.96 14.97 < 12.91 1983 Aug 25 15.0 - LWR16666 RDAF 14.97 14.96 14.97 13.04( + 0.06 - 0.06 ) 1986 Jan 31 15.0 - LWP07604 RDAF 14.97 14.96 14.97 12.77( + 0.03 - 0.03 ) 1980 Nov 15 15.0 AB Hale ApJS63,615 15.01 15.00 15.01 12.70( + 0.02 - 0.02 ) 1982 Jul 10 15.0 - LWR13645 RDAF 15.01 15.00 15.01 12.71( + 0.03 - 0.03 ) 1983 Aug 25 15.0 - LWR16666 RDAF 15.01 15.00 15.01 12.69( + 0.03 - 0.04 ) 1986 Jan 31 15.0 - LWP07604 RDAF 15.02 15.01 15.03 12.70( + 0.02 - 0.02 ) 1982 Jul 10 15.0 - LWR13645 RDAF 15.02 15.01 15.03 12.72( + 0.02 - 0.03 ) 1983 Aug 25 15.0 - LWR16666 RDAF 15.02 15.01 15.03 12.65( + 0.03 - 0.03 ) 1986 Jan 31 15.0 - LWP07604 RDAF 15.04 15.03 15.05 12.70( + 0.02 - 0.02 ) 1982 Jul 10 15.0 - LWR13645 RDAF 15.04 15.03 15.05 12.73( + 0.02 - 0.03 ) 1983 Aug 25 15.0 - LWR16666 RDAF 15.04 15.03 15.05 12.65( + 0.03 - 0.03 ) 1986 Jan 31 15.0 - LWP07604 RDAF 15.06 15.05 15.06 12.67( + 0.02 - 0.02 ) 1982 Jul 10 15.0 - LWR13645 RDAF 15.06 15.05 15.06 12.67( + 0.03 - 0.03 ) 1983 Aug 25 15.0 - LWR16666 RDAF 15.06 15.05 15.06 12.62( + 0.03 - 0.03 ) 1986 Jan 31 15.0 - LWP07604 RDAF 15.07 15.06 15.08 12.64( + 0.02 - 0.02 ) 1982 Jul 10 15.0 - LWR13645 RDAF 15.07 15.06 15.08 12.67( + 0.03 - 0.03 ) 1983 Aug 25 15.0 - LWR16666 RDAF 15.07 15.06 15.08 12.59( + 0.03 - 0.04 ) 1986 Jan 31 15.0 - LWP07604 RDAF 15.09 15.08 15.10 12.57( + 0.02 - 0.02 ) 1982 Jul 10 15.0 - LWR13645 RDAF 15.09 15.08 15.10 12.65( + 0.03 - 0.04 ) 1983 Aug 25 15.0 - LWR16666 RDAF 15.09 15.08 15.10 12.51( + 0.04 - 0.05 ) 1986 Jan 31 15.0 - LWP07604 RDAF 15.11 15.10 15.12 12.58( + 0.02 - 0.02 ) 1982 Jul 10 15.0 - LWR13645 RDAF 15.11 15.10 15.12 12.72( + 0.04 - 0.04 ) 1983 Aug 25 15.0 - LWR16666 RDAF 15.11 15.10 15.12 12.63( + 0.05 - 0.05 ) 1986 Jan 31 15.0 - LWP07604 RDAF 15.13 15.12 15.15 12.51( + 0.02 - 0.02 ) 1982 Jul 10 15.0 - LWR13645 RDAF 15.13 15.12 15.15 12.75( + 0.04 - 0.05 ) 1983 Aug 25 15.0 - LWR16666 RDAF 15.13 15.12 15.15 12.61( + 0.06 - 0.08 ) 1986 Jan 31 15.0 - LWP07604 RDAF 15.17 15.17 15.18 12.57( + 0.03 - 0.03 ) 1982 Jul 10 15.0 - LWR13645 RDAF 15.17 15.17 15.18 12.83( + 0.05 - 0.06 ) 1983 Aug 25 15.0 - LWR16666 RDAF 15.17 15.17 15.18 12.67( + 0.07 - 0.08 ) 1986 Jan 31 15.0 - LWP07604 RDAF 15.17 15.17 15.18 10.99( + 0.02 - 0.02 ) 1986 Jan 31 15.0 - SWP27640 RDAF 15.19 15.18 15.19 12.75( + 0.02 - 0.02 ) 1980 May 1 15.0 - SWP08882 RDAF 15.19 15.18 15.19 12.86( + 0.02 - 0.02 ) 1980 May 1 15.0 - SWP08884 RDAF 15.19 15.18 15.19 12.62( + 0.02 - 0.02 ) 1982 Jul 10 15.0 - SWP17393 RDAF 15.19 15.18 15.19 12.86( + 0.06 - 0.07 ) 1983 Aug 25 15.0 - LWR16666 RDAF 15.19 15.18 15.19 12.54( + 0.04 - 0.05 ) 1986 Jan 31 15.0 - SWP27639 RDAF 15.19 15.18 15.19 12.15( + 0.05 - 0.05 ) 1986 Jan 31 15.0 - SWP27640 RDAF 15.20 15.19 15.21 12.76( + 0.02 - 0.02 ) 1980 May 1 15.0 - SWP08882 RDAF 15.20 15.19 15.21 12.80( + 0.02 - 0.02 ) 1980 May 1 15.0 - SWP08884 RDAF 15.20 15.19 15.21 12.64( + 0.02 - 0.02 ) 1982 Jul 10 15.0 - SWP17393 RDAF 15.20 15.19 15.21 12.61( + 0.02 - 0.03 ) 1986 Jan 31 15.0 - SWP27639 RDAF 15.20 15.19 15.21 12.34( + 0.04 - 0.05 ) 1986 Jan 31 15.0 - SWP27640 RDAF 15.21 15.21 15.22 12.79( + 0.02 - 0.02 ) 1980 May 1 15.0 - SWP08882 RDAF 15.21 15.21 15.22 12.82( + 0.02 - 0.02 ) 1980 May 1 15.0 - SWP08884 RDAF 15.21 15.21 15.22 12.68( + 0.02 - 0.02 ) 1982 Jul 10 15.0 - SWP17393 RDAF 15.21 15.21 15.22 12.59( + 0.03 - 0.03 ) 1986 Jan 31 15.0 - SWP27639 RDAF 15.21 15.21 15.22 12.41( + 0.04 - 0.04 ) 1986 Jan 31 15.0 - SWP27640 RDAF 15.22 15.22 15.23 12.81( + 0.03 - 0.03 ) 1980 May 1 15.0 - SWP08882 RDAF 15.22 15.22 15.23 12.81( + 0.03 - 0.03 ) 1980 May 1 15.0 - SWP08884 RDAF 15.22 15.22 15.23 12.68( + 0.02 - 0.02 ) 1982 Jul 10 15.0 - SWP17393 RDAF 15.22 15.22 15.23 12.60( + 0.04 - 0.04 ) 1986 Jan 31 15.0 - SWP27639 RDAF 15.22 15.22 15.23 12.24( + 0.05 - 0.05 ) 1986 Jan 31 15.0 - SWP27640 RDAF 15.27 15.26 15.27 12.76( + 0.02 - 0.02 ) 1980 May 1 15.0 - SWP08882 RDAF 15.27 15.26 15.27 12.72( + 0.03 - 0.03 ) 1980 May 1 15.0 - SWP08884 RDAF 15.27 15.26 15.27 12.61( + 0.02 - 0.02 ) 1982 Jul 10 15.0 - SWP17393 RDAF 15.27 15.26 15.27 12.47( + 0.03 - 0.04 ) 1986 Jan 31 15.0 - SWP27639 RDAF 15.27 15.26 15.27 12.37( + 0.05 - 0.06 ) 1986 Jan 31 15.0 - SWP27640 RDAF 15.31 15.30 15.31 12.82( + 0.02 - 0.02 ) 1980 May 1 15.0 - SWP08882 RDAF 15.31 15.30 15.31 12.79( + 0.03 - 0.03 ) 1980 May 1 15.0 - SWP08884 RDAF 15.31 15.30 15.31 12.66( + 0.02 - 0.02 ) 1982 Jul 10 15.0 - SWP17393 RDAF 15.31 15.30 15.31 12.50( + 0.04 - 0.05 ) 1986 Jan 31 15.0 - SWP27639 RDAF 15.31 15.30 15.31 12.54( + 0.04 - 0.04 ) 1986 Jan 31 15.0 - SWP27640 RDAF 15.32 15.31 15.33 12.81( + 0.02 - 0.02 ) 1980 May 1 15.0 - SWP08882 RDAF 15.32 15.31 15.33 12.79( + 0.03 - 0.03 ) 1980 May 1 15.0 - SWP08884 RDAF 15.32 15.31 15.33 12.65( + 0.02 - 0.02 ) 1982 Jul 10 15.0 - SWP17393 RDAF 15.32 15.31 15.33 12.58( + 0.03 - 0.03 ) 1986 Jan 31 15.0 - SWP27639 RDAF 15.32 15.31 15.33 12.41( + 0.06 - 0.07 ) 1986 Jan 31 15.0 - SWP27640 RDAF 15.38 15.37 15.39 12.76( + 0.02 - 0.02 ) 1980 May 1 15.0 - SWP08882 RDAF 15.38 15.37 15.39 12.79( + 0.03 - 0.03 ) 1980 May 1 15.0 - SWP08884 RDAF 15.38 15.37 15.39 12.66( + 0.02 - 0.03 ) 1982 Jul 10 15.0 - SWP17393 RDAF 15.38 15.37 15.39 12.51( + 0.04 - 0.04 ) 1986 Jan 31 15.0 - SWP27639 RDAF 15.38 15.37 15.39 12.31( + 0.06 - 0.07 ) 1986 Jan 31 15.0 - SWP27640 RDAF 17.38 16.68 17.93 11.68( + 0.09 - 0.10 ) 1980 Sep 27 360.0 IPC IPC Table3 17.99 17.68 18.38 11.78( + 0.00 - 0.00 ) 1985 Mar 16 - ME EXOSAT ApJ384,062 17.99 17.68 18.38 11.56( + 0.00 - 0.00 ) 1989 Oct 31 3600.0 LAC GINGA-LAC ApJ389,157