ICQ
Below are the descriptive information (regarding comparison stars, which were formally published in the printed pages of the ICQ) that supplement tabulated data for the October 2008 issue of the ICQ.
Comet 6P/d'Arrest -> 2008 July 10.60: comp. star has B-V = +0.40 [TSU02]. July 10.60, 21.57, 22.60, Aug. 13.52, Sept. 2.54, 22.54, and Oct. 30.49: Guide 8.0 software used for comp.-star mags [TSU02]. July 21.57 and 22.60: comp. star has B-V = +0.62 [TSU02]. Aug. 10.65 and Sept. 22.49: Guide 8.0 software used for comp.-star mags [NAG04]. Aug. 13.52: comp. star has B-V = +0.54 [TSU02]. Aug. 24.55 and Oct. 30.47: Guide 8.0 software used for comp.-star mags [YOS02]. Aug. 26.93: comp. stars have V = 9.13 (B-V = +0.43) and 9.60 (+0.31) [AMO01]. Aug. 30.93 and 3.195: comp. stars have V = 8.91 (B-V = +0.43) and 9.46 (+0.40) [AMO01]. Sept. 2.54: comp. star has B-V = +0.40 [TSU02]. Sept. 6.94: comp. stars have V = 8.72 (B-V = +0.43) and 9.76 (+0.39) [AMO01]. Oct. 2.96: comp. stars have V = 9.03 (B-V = +0.96) and 9.76 (+0.61) [AMO01]. Oct. 30.49: comp. star has B-V = +0.52 [TSU02]. Comet 19P/Borrelly -> 2008 Aug. 9.80: B-V values of comp. stars are +0.50, +0.52, and +0.56 [YOS02]. Aug. 9.80 and Sept. 7.82: Guide 8.0 software used for comp.-star mags [YOS02]. Aug. 10.79 and Oct. 8.79: Guide 8.0 software used for comp.-star mags [NAG04]. Comet 29P/Schwassmann-Wachmann -> 2008 Oct. 8.73: Guide 8.0 software used for comp.-star mags [NAG04]. Comet 59P/Kearns-Kwee -> 2008 Oct. 2.60: Guide 8.0 software used for comp.-star mags; comp. star has B-V = +0.57 [TSU02]. Comet 61P/Shajn-Schaldach -> 2008 Sept. 2.74: comp. star has B-V = +0.80 [TSU02]. Sept. 2.74 and Oct. 2.71: Guide 8.0 software used for comp.-star mags [TSU02]. Oct. 2.71: comp. star has B-V = +0.58 [TSU02]. Comet 68P/Klemola -> 2008 Sept. 9.46: Guide 8.0 software used for comp.-star mags; comp. star has B-V = +0.59 [TSU02]. Comet 85P/Boethin -> 2008 Oct. 2.44: Guide 8.0 software used for comp.-star mags; comp. star has B-V = +0.73 [TSU02]. Comet 199P/Shoemaker -> 2008 Aug. 30.45: comp. star has B-V = +0.46 [TSU02]. Aug. 30.45 and Sept. 2.45: Guide 8.0 software used for comp.-star mags [TSU02]. Sept. 2.45: comp. star has B-V = +0.64 [TSU02]. Comet 205P/2008 R6 (Giacobini) -> 2008 Oct. 2.52: comp. star has B-V = +0.63 [TSU02]. Oct. 2.52 and 18.48: Guide 8.0 software used for comp.-star mags [TSU02]. Oct. 18.48: B-V values of comp. stars are +0.55, +0.60, and +0.80 [YOS02]. Oct. 16.52: comp. star has B-V = +0.62 [TSU02]. Oct. 16.52 and 30.47: Guide 8.0 software used for comp.-star mags [TSU02]. Comet 206P/2008 T3 (Barnard-Boattini) -> 2008 Oct. 16.49 and 30.52: Guide 8.0 software used for comp.-star mags; comp. star has B-V = +0.45 [TSU02]. Comet C/2005 L3 (McNaught) -> 2008 July 10.50: comp. star has B-V = +0.50 [TSU02]. July 10.50 and Aug. 30.45: Guide 8.0 software used for comp.-star mags [TSU02]. Aug. 30.45: comp. star has B-V = +0.46 [TSU02]. Comet C/2006 OF_2 (Broughton) -> 2008 Aug. 9.77: B-V values of comp. stars are +0.58, +0.77, and +0.83 [YOS02]. Aug. 9.77, Oct. 1.74, and 30.63: Guide 8.0 software used for comp.-star mags [YOS02]. Sept. 8.76: Guide 8.0 software used for comp.-star mags [NAG04]. Oct. 4.71: Guide 8.0 software used for comp.-star mags [HAR10]. Comet C/2006 Q1 (McNaught) -> 2008 July 22.46: Guide 8.0 software used for comp.-star mags; comp. star has B-V = +0.40 [TSU02]. Comet C/2006 W3 (Christensen) -> 2008 Sept. 7.81, Oct. 1.71, and 30.50: Guide 8.0 software used for comp.-star mags [YOS02]. Sept. 8.78, 22.57, 24.58, and Oct. 8.64: Guide 8.0 software used for comp.-star mags [NAG04]. Sept. 9.74: Guide 8.0 software used for comp.-star mags; comp. star has B-V = +0.47 [TSU02]. Oct. 9.75 and 11.76: Guide 8.0 software used for comp.-star mags [HAR10]. Comet C/2007 B2 (Skiff) -> 2008 July 10.47: comp. star has B-V = +0.72 [TSU02]. July 10.47 and 22.48: Guide 8.0 software used for comp.-star mags [TSU02]. July 22.48: comp. star has B-V = +0.44 [TSU02]. Comet C/2007 G1 (LINEAR) -> 2008 July 10.53: comp. star has B-V = +0.40 [TSU02]. July 10.53 and 22.50: Guide 8.0 software used for comp.-star mags [TSU02]. July 22.50: comp. star has B-V = +0.44 [TSU02]. Comet C/2007 N3 (Lulin) -> 2008 July 21.59: comp. star has B-V = +0.72 [TSU02]. July 21.59, 22.61, Aug. 13.48, Sept. 2.49, and Oct. 2.41: Guide 8.0 software used for comp.-star mags [TSU02]. July 22.61: comp. star has B-V = +0.47 [TSU02]. July 24.56 and Aug. 8.65: Guide 8.0 software used for comp.-star mags [YOS02]. Aug. 4.92: comp. stars have V = 11.26 (B-V = -0.12) and 11.67 (+0.16) [AMO01]. Aug. 7.93: comp. stars have V = 10.71 (B-V = +0.35) and 11.10 (+0.31) [AMO01]. Aug. 13.48: comp. star has B-V = +0.78 [TSU02]. Aug. 26.93 and 28.92: comp. stars have V = 9.81 (B-V = +0.67) and 10.56 (+0.33) [AMO01]. Aug. 30.94: comp. stars have V = 10.79 (B-V = +0.45) and 11.07 (+0.50) [AMO01]. Sept. 2.49: comp. star has B-V = +0.56 [TSU02]. Sept. 6.95: comp. stars have V = 9.70 (B-V = +0.59) and 10.84 (+0.89) [AMO01]. Sept. 7.95: comp. stars have V = 10.75 (B-V = +0.57) and 11.11 (+0.48) [AMO01]. Sept. 24.44: Guide 8.0 software used for comp.-star mags [NAG04]. Oct. 2.41: comp. star has B-V = +0.54 [TSU02]. Oct. 2.94: comp. stars have V = 9.58 (B-V = +0.98) and 9.86 (+0.38) [AMO01]. Comet C/2007 W1 (Boattini) -> 2008 Apr. 26.83: Guide 8.0 software used for comp.-star mags [MAJ01]. Apr. 27.88 and May 9.87: Guide 8.0 software used for comp.-star mags [TOT03]. Apr. 27.89 and May 9.86: Guide 8.0 software used for comp.-star mags [SZA]. May 7.72: Guide 8.0 software used for comp.-star mags [SAN07]. July 29.73, Aug. 2.77, 9.73, 24.60, and Sept. 7.78: Guide 8.0 software used for comp.-star mags [YOS02]. Aug. 10.70 and Sept. 8.72: Guide 8.0 software used for comp.-star mags [NAG04]. Aug. 31.13: comp. stars have V = 9.53 (B-V = +0.72) and 9.95 (+0.54) [AMO01]. Sept. 2.71 and 9.60: Guide 8.0 software used for comp.-star mags [TSU02]. Sept. 9.60: comp. star has B-V = +0.45 [TSU02]. Comet C/2008 A1 (McNaught) -> 2008 Aug. 11.90: comp. stars have V = 8.33 (B-V = +0.88) and 8.78 (+0.52) [AMO01]. Aug. 26.92: comp. stars have V = 7.18 (B-V = +0.27) and 7.79 (+0.20) [AMO01]. Aug. 29.91: comp. stars have V = 6.71 (B-V = +0.52) and 7.21 (+0.27) [AMO01]. Aug. 30.92 and 31.94: comp. stars have V = 6.63 (B-V = +0.42) and 7.60 (+0.19) [AMO01]. Sept. 16.94: comp. stars have V = 6.60 (B-V = +0.30) and 7.32 (+0.32) [AMO01]. Sept. 30.92: comp. stars have V = 7.72 (B-V = +0.17) and 8.22 (+0.37) [AMO01]. Oct. 2.93: comp. stars have V = 7.23 (B-V = +0.03) and 7.81 (+0.59) [AMO01]. Oct. 7.92: comp. stars have V = 7.56 (B-V = +0.23) and 7.92 (+0.57) [AMO01]. Oct. 8.41: Guide 8.0 software used for comp.-star mags [NAG04]. Oct. 11.41, 18.43, and 30.40: Guide 8.0 software used for comp.-star mags [YOS02]. Oct. 18.43: B-V values of comp. stars are +0.45, +0.52, and +0.67 [YOS02]. Comet C/2008 J1 (Boattini) -> 2008 July 24.52, Aug. 2.73, and 24.57: Guide 8.0 software used for comp.-star mags [YOS02]. Aug. 10.73: Guide 8.0 software used for comp.-star mags [NAG04]. Comet P/2008 J2 (Beshore) -> 2008 July 21.46: Guide 8.0 software used for comp.-star mags; comp. star has B-V = +0.57 [TSU02]. Comet P/2008 L2 (Hill) -> 2008 Sept. 2.61: comp. star has B-V = +0.70 [TSU02]. Sept. 2.61, Oct. 2.56, and 30.54: Guide 8.0 software used for comp.-star mags [TSU02]. Oct. 2.56: comp. star has B-V = +0.45 [TSU02]. Oct. 30.54: comp. star has B-V = +0.55 [TSU02]. Comet P/2008 O2 (McNaught) -> 2008 Oct. 2.48: Guide 8.0 software used for comp.-star mags; comp. star has B-V = +0.99 [TSU02]. Comet P/2008 Q2 (Ory) -> 2008 Sept. 9.70: comp. star has B-V = +0.50 [TSU02]. Sept. 9.70 and Oct. 30.60: Guide 8.0 software used for comp.-star mags [TSU02]. Oct. 30.60: comp. star has B-V = +0.44 [TSU02].