Electronic Telegram No. 1524 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions) CBAT@CFA.HARVARD.EDU (science) URL http://www.cfa.harvard.edu/iau/cbat.html SUPERNOVA 2008fz A. J. Drake, S. G. Djorgovski, A. Mahabal, M. J. Graham, and R. Williams, California Institute of Technology; E. C. Beshore, S. M. Larson, and R. Hill, Lunar and Planetary Laboratory, University of Arizona; and E. Christensen, Gemini Observatory, report the discovery in the course of the Catalina Real-time Transient Survey (CRTS) of an apparent supernova detected in multiple sequences of unfiltered CCD exposures taken with the 0.7-m f/1.9 Catalina Schmidt telescope (+ 4000x4000 camera): SN 2008 UT R.A. (2000.0) Decl. Mag. 2008fz Sep. 22.34 23 16 16.60 +11 42 47.5 17.1 Additional magnitudes for 2008fz: June 13.42 UT, [20.0 (CRTS); Sept. 23.14, 17.3 (Palomar 1.52-m reflector + Gunn r filter); 24.14, 17.2 (Palomar; Gunn r); 28.37, 17.0 (CRTS). No galaxy host is seen in past co-added Catalina Sky Survey images (to mag 22) or co-added Palomar-Quest images in Johnson I and B and Gunn g, z, and r filters (to mag 21.5-23). E. Y. Hsiao, M. L. Graham, C. J. Pritchet, and D. Balam, Department of Physics and Astronomy, University of Victoria, report that a noisy spectrogram (range 390-703 nm, resolution 0.3 nm) of 2008fz, obtained on Sept. 23.33 UT with the 1.82-m Plaskett Telescope of the National Research Council of Canada, shows it to be a type-Ic supernova at 2 weeks past maximum light. Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (Blondin and Tonry 2007, Ap.J. 666, 1024) indicates that 2008fz is most similar to the type-Ic supernova 1998bw at 16 days past maximum light. There is a faint extended object at the position of the object on the digitized blue plate of the second Palomar Sky Survey. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2008 CBAT 2008 October 2 (CBET 1524) Daniel W. E. Green