Electronic Telegram No. 854 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://cfa-www.harvard.edu/iau/cbat.html SUPERNOVAE 2007ac AND 2007ad T. Puckett and P. Gray report the discovery of two apparent supernovae on CCD images taken at Ellijay, GA, in the course of the Puckett Observatory Supernova Search; 2007ac was found with a 0.60-m reflector (limiting mag 19.7), and 2007ad with a 0.50-m reflector (limiting mag 19.3). SN 2007 UT R.A. (2000.0) Decl. Mag. Offset 2007ac Feb. 19.44 16 47 02.36 +40 08 47.6 17.5 2".0 W, 8".7 N 2007ad Feb. 19.47 17 24 24.58 +44 56 15.9 17.4 4".9 E, 10".7 S Additional magnitudes for 2007ac in UGC 10550: 2005 Dec. 19, [19.0 (Puckett); 2007 Feb. 21.43, 17.5 (J. Newton, Portal, AZ, 0.40-m reflector). Additional magnitudes for 2007ad in UGC 10845: 2005 Dec. 19, [19.0 (Puckett); 2007 Feb. 21.46, 17.5 (Newton). NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2007 CBAT 2007 February 21 (CBET 854) Daniel W. E. Green