April 28, 2011: In AAVSO Alert Notice 438 on Supernova 2011by in NGC 3972 (issued 2011 April 28), the position was attributed to the wrong object. Here is the corrected text:
Position: R.A. = 11:55:45.56 Decl. = +55:19:33.8 (equinox 2000.0)
SN 2011by is about 5.3" east and 19.1" north of the center of NGC 3972.
Sincere apologies for the error.
This Alert Notice was issued by Elizabeth O. Waagen.
SUBMIT OBSERVATIONS TO THE AAVSO
SUPERNOVA 2011by in NGC 3972 = PSN J11554556+5519338
April 28, 2011
Discovered by: Zhangwei Jin, Ningbo, Zhejiang, China, and Xing Gao, Urumqi, Xinjiang, China
Discovery Date: Apr. 26.8234 UT
Discovery Magnitude: approximately 14.2 using a Celestron C14 Schmidt-Cassegrain telescope (+ unfiltered CCD camera) at Mt. Nanshan