SIMBAD references

Magnitudes for V2573 Oph estimated by W. Liller, Vina del Mar, Chile (85-mm f/1.5 Nikon lens + orange filter + Technical Pan film; uncertainties ± 0.2 mag): June 7.117, [11.1; 23.132, 10.4; July 14.985, 11.1. Additional CCD magnitudes of the nova: July 18.114, V = 11.29 (Liller; through clouds); 18.115, V = 11.42 (J. D. West, Mulvane, KS); 18.116, B = 12.13 (Liller); 18.132, R_c = 10.60 (West); 18.136, [H_alpha] = 0.89 (West); 22.122, V = 11.76 (West); 22.108, R_c = 10.94 (West). Magnitudes from N. J. Brown, Quinns Rocks, W. Australia (135-mm f/2 lens + T-Max 400 film): June 6.60, [11.5; 18.58, 10.8; July 6.52, 10.5. Visual magnitude estimates: July 17.443, 10.8 (M. Linnolt, Honolulu, HI); 19.885, 11.2 (M. Lehky, Hradec Kralove, Czech Republic); 20.875, 11.4 (Lehky); 22.855, 11.4 (A. Baransky, Pylypovychi, Ukraine); 26.99, 11.8 (J. Carvajal, Avila, Spain).