Nanu!

Az AAVSO is kiadta a riasztást.

A legjobb Arne megjegyzése a felhívás végén:
"Here is an excuse to take the 10 millionth image of M51!"

:)))

További szép felvételek a galaxisról és a szupernóváról:

http://6888comete.free.fr/fr/imageSN.htm

üdv:

Fidusz

* * *

Subject: AAVSO Special Notice #241: Supernova in M51

AAVSO Special Notice #241

Supernova in M51
June 3, 2011

A new supernova in M51 was discovered by A. Riou and confirmed by several
sources, including the Palomar Transient Factory (Silverman et al., ATEL
3398).  It is located at
13:30:05.08 +47:10:11.2 J2000
and has a magnitude of about 13.5.  Nice images of the supernova can be
found at:
http://6888comete.free.fr/fr/imageSN.htm

PTF also obtained a spectra from Keck, indicating that this is a type II
supernova with a relatively blue continuum with P-Cygni profiles in the
Balmer series.

This is a unique event, because it occurs in a galaxy that is imaged almost
constantly.  There must be many photos available that show the rise of this
SNe, so the data-mining opportunity is obvious.  It is transiting at local
twilight and should be observable for northern hemisphere observers for
several months.

A new APASS sequence should be uploaded soon.  We recommend taking nightly
monitoring images in B and V for CCD observers, along with visual estimates,
until the supernova is no longer visible.

Here is an excuse to take the 10 millionth image of M51!
Arne
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