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Special Notice #256: Request for fast optical time series of SN 2011fe

September 16, 2011: Dr. Bradley Schaefer (LSU) requests fast time series of SN 2011fe over the next several weeks to attempt the detection of fast optical variations in supernova light.

The following request was prepared by Dr. Schaefer which we forward at his request:

Supernova Photometry Chat with Dr. Michael Richmond

On 13 September, 2011, we had the good fortune to have Dr. Michael Richmond, Physics Professor and Observatory Director for the Rochester Institute of Technology in New York chat with us about SN 2011fe and supernova photometry in general. Here is the transcript from that chat session.

SN 2011fe

Welcome to the AAVSO's special webpage devoted to SN 2011fe!

Alert Notice 446: Supernova 2011‭fe ‬in M101‭ (‬NGC 5457‭) = ‬PSN J14030581+5416254

August 26‭, ‬2011

Discovered by‭:  ‬The Type Ia supernova science working group of the‭ ‬ Palomar Transient Factory‭:  ‬Peter Nugent‭, ‬Lawrence Berkeley National‭ ‬Laboratory‭ (‬LBL‭), ‬University of California at Berkeley‭; ‬Mark‭ ‬Sullivan‭, ‬Oxford University‭; ‬David Bersier‭, ‬Liverpool John Moores‭ ‬University‭ (‬LJMU‭); ‬D‭. ‬A‭. ‬Howell‭, ‬Las Cumbres Observatory Global‭ ‬Telescope Network Inc‭., ‬University of California at Santa Barbara‭; ‬Rollin Thomas‭, ‬LBL‭; ‬Phil James‭, ‬LJMU

Special Notice #250: Possible Type-Ia Supernova in M101

August 24, 2011: P. Nugent et al. report in ATel #3581 that a possible Type-Ia supernova has been discovered by the Palomar Transient Factory shortly after eruption in the galaxy M101 and has been designated "PTF11kly".  The object is currently at a magnitude of g=17.2, but may well rise by several magnitudes. The object is well placed within M101 for good photometry, and observations of this potential bright SNIa are strongly encouraged.

The (J2000) coordinates reported for the object are

    RA: 14:03:05.81 , Dec: +54:16:25.4

Special Notice #243: Pre-SN 2011dh images of M51 requested

June 7, 2011: Iair Arcavi and Avishay Gal-Yam (on behalf of the Palomar Transient Factory) write:

Alert Notice 439: Correction to AAVSO Alert Notice 438 on SN 2011by

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.



AAVSO Alert Notice 438

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

Alert Notice 432: Supernova 2011at = PSN J09285756-1448206 in MCG -02-24-27

March 14, 2011

Discovered by: Lou Cox, Jack Newton, and Tim Puckett, Ellijay, GA, in the course of the Puckett Observatory Supernova Search

Discovery Date: March 10.214 UT

Discovery Magnitude: unfiltered CCD magnitude 14.5 (limiting magnitude 19.0) taken with a 0.40-m reflector at Portal, AZ

Position: R.A. = 09:28:57.56  Decl. = -14:48:20.6 (equinox 2000.0)
SN 2011at is 20.4" east and 6.3" north of the center of PGC 26905 = MCG -02-24-27.


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